Project2 Predictive Analytics 624

Salma Elshahawy

2021-05-07

Introduction

We are to develop a model that predicts the pH level of a beverage.

Data Exploration

df <- read_excel("StudentData.xlsx") %>%
  data.frame()

eval_df <- read_excel("StudentEvaluation.xlsx") %>%
  data.frame()
summary(df)
  Brand.Code         Carb.Volume     Fill.Ounces      PC.Volume      
 Length:2571        Min.   :5.040   Min.   :23.63   Min.   :0.07933  
 Class :character   1st Qu.:5.293   1st Qu.:23.92   1st Qu.:0.23917  
 Mode  :character   Median :5.347   Median :23.97   Median :0.27133  
                    Mean   :5.370   Mean   :23.97   Mean   :0.27712  
                    3rd Qu.:5.453   3rd Qu.:24.03   3rd Qu.:0.31200  
                    Max.   :5.700   Max.   :24.32   Max.   :0.47800  
                    NA's   :10      NA's   :38      NA's   :39       
 Carb.Pressure     Carb.Temp          PSC             PSC.Fill     
 Min.   :57.00   Min.   :128.6   Min.   :0.00200   Min.   :0.0000  
 1st Qu.:65.60   1st Qu.:138.4   1st Qu.:0.04800   1st Qu.:0.1000  
 Median :68.20   Median :140.8   Median :0.07600   Median :0.1800  
 Mean   :68.19   Mean   :141.1   Mean   :0.08457   Mean   :0.1954  
 3rd Qu.:70.60   3rd Qu.:143.8   3rd Qu.:0.11200   3rd Qu.:0.2600  
 Max.   :79.40   Max.   :154.0   Max.   :0.27000   Max.   :0.6200  
 NA's   :27      NA's   :26      NA's   :33        NA's   :23      
    PSC.CO2           Mnf.Flow       Carb.Pressure1  Fill.Pressure  
 Min.   :0.00000   Min.   :-100.20   Min.   :105.6   Min.   :34.60  
 1st Qu.:0.02000   1st Qu.:-100.00   1st Qu.:119.0   1st Qu.:46.00  
 Median :0.04000   Median :  65.20   Median :123.2   Median :46.40  
 Mean   :0.05641   Mean   :  24.57   Mean   :122.6   Mean   :47.92  
 3rd Qu.:0.08000   3rd Qu.: 140.80   3rd Qu.:125.4   3rd Qu.:50.00  
 Max.   :0.24000   Max.   : 229.40   Max.   :140.2   Max.   :60.40  
 NA's   :39        NA's   :2         NA's   :32      NA's   :22     
 Hyd.Pressure1   Hyd.Pressure2   Hyd.Pressure3   Hyd.Pressure4   
 Min.   :-0.80   Min.   : 0.00   Min.   :-1.20   Min.   : 52.00  
 1st Qu.: 0.00   1st Qu.: 0.00   1st Qu.: 0.00   1st Qu.: 86.00  
 Median :11.40   Median :28.60   Median :27.60   Median : 96.00  
 Mean   :12.44   Mean   :20.96   Mean   :20.46   Mean   : 96.29  
 3rd Qu.:20.20   3rd Qu.:34.60   3rd Qu.:33.40   3rd Qu.:102.00  
 Max.   :58.00   Max.   :59.40   Max.   :50.00   Max.   :142.00  
 NA's   :11      NA's   :15      NA's   :15      NA's   :30      
  Filler.Level    Filler.Speed   Temperature      Usage.cont      Carb.Flow   
 Min.   : 55.8   Min.   : 998   Min.   :63.60   Min.   :12.08   Min.   :  26  
 1st Qu.: 98.3   1st Qu.:3888   1st Qu.:65.20   1st Qu.:18.36   1st Qu.:1144  
 Median :118.4   Median :3982   Median :65.60   Median :21.79   Median :3028  
 Mean   :109.3   Mean   :3687   Mean   :65.97   Mean   :20.99   Mean   :2468  
 3rd Qu.:120.0   3rd Qu.:3998   3rd Qu.:66.40   3rd Qu.:23.75   3rd Qu.:3186  
 Max.   :161.2   Max.   :4030   Max.   :76.20   Max.   :25.90   Max.   :5104  
 NA's   :20      NA's   :57     NA's   :14      NA's   :5       NA's   :2     
    Density           MFR           Balling       Pressure.Vacuum 
 Min.   :0.240   Min.   : 31.4   Min.   :-0.170   Min.   :-6.600  
 1st Qu.:0.900   1st Qu.:706.3   1st Qu.: 1.496   1st Qu.:-5.600  
 Median :0.980   Median :724.0   Median : 1.648   Median :-5.400  
 Mean   :1.174   Mean   :704.0   Mean   : 2.198   Mean   :-5.216  
 3rd Qu.:1.620   3rd Qu.:731.0   3rd Qu.: 3.292   3rd Qu.:-5.000  
 Max.   :1.920   Max.   :868.6   Max.   : 4.012   Max.   :-3.600  
 NA's   :1       NA's   :212     NA's   :1                        
       PH        Oxygen.Filler     Bowl.Setpoint   Pressure.Setpoint
 Min.   :7.880   Min.   :0.00240   Min.   : 70.0   Min.   :44.00    
 1st Qu.:8.440   1st Qu.:0.02200   1st Qu.:100.0   1st Qu.:46.00    
 Median :8.540   Median :0.03340   Median :120.0   Median :46.00    
 Mean   :8.546   Mean   :0.04684   Mean   :109.3   Mean   :47.62    
 3rd Qu.:8.680   3rd Qu.:0.06000   3rd Qu.:120.0   3rd Qu.:50.00    
 Max.   :9.360   Max.   :0.40000   Max.   :140.0   Max.   :52.00    
 NA's   :4       NA's   :12        NA's   :2       NA's   :12       
 Air.Pressurer      Alch.Rel        Carb.Rel      Balling.Lvl  
 Min.   :140.8   Min.   :5.280   Min.   :4.960   Min.   :0.00  
 1st Qu.:142.2   1st Qu.:6.540   1st Qu.:5.340   1st Qu.:1.38  
 Median :142.6   Median :6.560   Median :5.400   Median :1.48  
 Mean   :142.8   Mean   :6.897   Mean   :5.437   Mean   :2.05  
 3rd Qu.:143.0   3rd Qu.:7.240   3rd Qu.:5.540   3rd Qu.:3.14  
 Max.   :148.2   Max.   :8.620   Max.   :6.060   Max.   :3.66  
                 NA's   :9       NA's   :10      NA's   :1     

Missing Values

df %>%
  select(-PH) %>%
  vis_miss()

df <- df %>% 
  drop_na(PH)
eval_df %>%
  select(-PH) %>%
  vis_miss()

set.seed(seed)

df_imputed <- kNN(df, imp_var = FALSE)
eval_df_imputed <- kNN(select(eval_df, -PH), imp_var = FALSE)

Near-Zero Variance

nearZeroVar(df_imputed, saveMetrics = TRUE) %>%
  data.frame() %>%
  rownames_to_column() %>%
  filter(nzv == TRUE)
        rowname freqRatio percentUnique zeroVar  nzv
1 Hyd.Pressure1  31.03704      9.544215   FALSE TRUE

Correlations

temp <- df_imputed %>%
  select(-Brand.Code) %>%
  na.omit()

p_mat <- cor.mtest(temp, conf.level = 0.95)$p

df_imputed %>%
  select(-Brand.Code) %>%
  na.omit() %>%
  cor() %>%
  corrplot(p.mat = p_mat, sig.level = 0.05, insig = "blank", order = "hclust", type = "upper")

Train/Test Split

set.seed(seed)
in_train <- createDataPartition(df_imputed$PH, p = 0.8, list = FALSE, times = 1)
train_df_imputed <- df_imputed[in_train,]
test_df_imputed <- df_imputed[-in_train,]
train_df <- df[in_train,]
test_df <- df[-in_train,]

Random Forest

Ranger

set.seed(seed)
tc <- trainControl(method = "cv", number = 10, allowParallel = TRUE)
rf_fit <- train(PH ~ ., data = train_df_imputed, method = "ranger", importance = "permutation", trControl = tc)
rf_fit
Random Forest 

2055 samples
  32 predictor

No pre-processing
Resampling: Cross-Validated (10 fold) 
Summary of sample sizes: 1849, 1850, 1849, 1850, 1849, 1849, ... 
Resampling results across tuning parameters:

  mtry  splitrule   RMSE        Rsquared   MAE       
   2    variance    0.11068563  0.6376551  0.08386717
   2    extratrees  0.11553525  0.5966385  0.08869122
  18    variance    0.09684906  0.6958891  0.06952233
  18    extratrees  0.09748675  0.6913763  0.07071824
  34    variance    0.09765850  0.6833223  0.06907887
  34    extratrees  0.09595279  0.6977679  0.06924598

Tuning parameter 'min.node.size' was held constant at a value of 5
RMSE was used to select the optimal model using the smallest value.
The final values used for the model were mtry = 34, splitrule = extratrees
 and min.node.size = 5.
varImp(rf_fit)
ranger variable importance

  only 20 most important variables shown (out of 34)

                  Overall
Mnf.Flow          100.000
Brand.CodeC        34.700
Bowl.Setpoint      28.283
Alch.Rel           18.687
Brand.CodeD        18.639
Oxygen.Filler      15.254
Usage.cont         15.150
Pressure.Vacuum    15.028
Air.Pressurer      12.181
Filler.Level       10.870
Carb.Rel           10.372
Balling.Lvl         9.397
Density             9.115
Carb.Flow           8.047
Brand.CodeB         7.765
Pressure.Setpoint   7.528
Balling             6.764
Hyd.Pressure3       5.221
Temperature         5.089
Carb.Pressure1      4.842
rf_predictions <- predict(rf_fit, test_df_imputed)
postResample(pred = rf_predictions, obs = test_df_imputed$PH)
      RMSE   Rsquared        MAE 
0.10086494 0.66426010 0.07086677 

RF

set.seed(seed)
rf_fit2 <- train(PH ~ ., data = train_df_imputed, method = "rf", trControl = tc)
rf_fit2
Random Forest 

2055 samples
  32 predictor

No pre-processing
Resampling: Cross-Validated (10 fold) 
Summary of sample sizes: 1849, 1850, 1849, 1850, 1849, 1849, ... 
Resampling results across tuning parameters:

  mtry  RMSE        Rsquared   MAE       
   2    0.11057587  0.6364941  0.08357253
  18    0.09695220  0.6951752  0.06963492
  34    0.09766056  0.6835861  0.06931444

RMSE was used to select the optimal model using the smallest value.
The final value used for the model was mtry = 18.
varImp(rf_fit2)
rf variable importance

  only 20 most important variables shown (out of 34)

                Overall
Mnf.Flow        100.000
Usage.cont       44.698
Brand.CodeC      36.162
Oxygen.Filler    28.668
Pressure.Vacuum  22.168
Bowl.Setpoint    21.044
Temperature      20.532
Carb.Rel         20.393
Alch.Rel         20.347
Air.Pressurer    19.083
Balling.Lvl      18.812
Filler.Level     18.140
Carb.Pressure1   16.398
Carb.Flow        11.308
Filler.Speed     11.072
Balling          10.678
Density           9.069
PC.Volume         8.143
MFR               6.986
Hyd.Pressure3     6.856
rf2_predictions <- predict(rf_fit2, test_df_imputed)
postResample(pred = rf2_predictions, obs = test_df_imputed$PH)
      RMSE   Rsquared        MAE 
0.10089213 0.66651555 0.07094864 

Brand Code Random Forests

for (brand_code in unique(train_df_imputed$Brand.Code)){
  print(paste("Brand Code", brand_code))
  temp_df <- train_df_imputed %>%
    filter(Brand.Code == brand_code) %>%
    select(-Brand.Code)
  set.seed(seed)
  temp_rf <- train(PH ~ ., data = temp_df, method = "ranger", importance = "permutation", trControl = tc)
  print(temp_rf)
  print(varImp(temp_rf))
  temp_test <- test_df_imputed %>%
    filter(Brand.Code == brand_code) %>%
    select(-Brand.Code) 
  temp_predictions <- predict(temp_rf, temp_test)
  print(postResample(pred = temp_predictions, obs = temp_test$PH))
}
[1] "Brand Code B"
Random Forest 

1086 samples
  31 predictor

No pre-processing
Resampling: Cross-Validated (10 fold) 
Summary of sample sizes: 977, 978, 977, 977, 977, 978, ... 
Resampling results across tuning parameters:

  mtry  splitrule   RMSE        Rsquared   MAE       
   2    variance    0.10242108  0.6678126  0.07716542
   2    extratrees  0.10708606  0.6378114  0.08192716
  16    variance    0.08996535  0.7280828  0.06540503
  16    extratrees  0.08912119  0.7351685  0.06480356
  31    variance    0.09125943  0.7150518  0.06541880
  31    extratrees  0.08698136  0.7451825  0.06271227

Tuning parameter 'min.node.size' was held constant at a value of 5
RMSE was used to select the optimal model using the smallest value.
The final values used for the model were mtry = 31, splitrule = extratrees
 and min.node.size = 5.
ranger variable importance

  only 20 most important variables shown (out of 31)

                  Overall
Mnf.Flow          100.000
Bowl.Setpoint      39.550
Air.Pressurer      16.300
Filler.Level       16.288
Oxygen.Filler      13.939
Pressure.Vacuum    10.392
Carb.Flow           9.567
Usage.cont          8.204
Carb.Rel            8.018
Pressure.Setpoint   6.764
Density             6.273
Balling             5.220
Temperature         4.712
Balling.Lvl         3.672
Hyd.Pressure2       3.106
Carb.Pressure1      2.894
Alch.Rel            2.797
Hyd.Pressure3       2.307
Hyd.Pressure1       2.077
Fill.Pressure       2.075
      RMSE   Rsquared        MAE 
0.09859265 0.69205414 0.06761754 
[1] "Brand Code A"
Random Forest 

219 samples
 31 predictor

No pre-processing
Resampling: Cross-Validated (10 fold) 
Summary of sample sizes: 196, 196, 197, 198, 197, 198, ... 
Resampling results across tuning parameters:

  mtry  splitrule   RMSE       Rsquared   MAE       
   2    variance    0.1190632  0.5320539  0.09570494
   2    extratrees  0.1240139  0.5037272  0.10037814
  16    variance    0.1147809  0.5179398  0.09063346
  16    extratrees  0.1121446  0.5606725  0.09013336
  31    variance    0.1179473  0.4874424  0.09288629
  31    extratrees  0.1117809  0.5562732  0.08868429

Tuning parameter 'min.node.size' was held constant at a value of 5
RMSE was used to select the optimal model using the smallest value.
The final values used for the model were mtry = 31, splitrule = extratrees
 and min.node.size = 5.
ranger variable importance

  only 20 most important variables shown (out of 31)

                  Overall
Mnf.Flow          100.000
Bowl.Setpoint      50.056
Filler.Level       39.144
Usage.cont         38.141
Oxygen.Filler      27.630
Pressure.Vacuum    23.268
Pressure.Setpoint  16.096
Carb.Flow          15.401
Balling.Lvl        11.071
Carb.Pressure1      9.610
Air.Pressurer       8.954
Balling             8.098
Filler.Speed        7.043
Hyd.Pressure3       6.930
Hyd.Pressure1       6.926
Hyd.Pressure2       6.646
Carb.Rel            6.194
Density             6.021
Carb.Volume         5.276
Alch.Rel            4.599
      RMSE   Rsquared        MAE 
0.10240842 0.69027437 0.07733073 
[1] "Brand Code C"
Random Forest 

256 samples
 31 predictor

No pre-processing
Resampling: Cross-Validated (10 fold) 
Summary of sample sizes: 230, 231, 228, 231, 230, 231, ... 
Resampling results across tuning parameters:

  mtry  splitrule   RMSE       Rsquared   MAE       
   2    variance    0.1448015  0.4019916  0.10882208
   2    extratrees  0.1475540  0.3860386  0.11202249
  16    variance    0.1360944  0.4411851  0.09985307
  16    extratrees  0.1359048  0.4607949  0.10099546
  31    variance    0.1366631  0.4344361  0.09900391
  31    extratrees  0.1339416  0.4689627  0.09775295

Tuning parameter 'min.node.size' was held constant at a value of 5
RMSE was used to select the optimal model using the smallest value.
The final values used for the model were mtry = 31, splitrule = extratrees
 and min.node.size = 5.
ranger variable importance

  only 20 most important variables shown (out of 31)

                  Overall
Oxygen.Filler     100.000
Mnf.Flow           61.214
PC.Volume          24.066
Density            23.182
Pressure.Vacuum    18.070
Hyd.Pressure1      16.430
Carb.Rel           15.487
Alch.Rel           14.985
Pressure.Setpoint  13.522
Usage.cont         11.999
Balling            10.890
Balling.Lvl        10.835
Filler.Speed       10.670
PSC.Fill           10.218
Hyd.Pressure2       9.278
MFR                 7.492
Hyd.Pressure3       7.359
Bowl.Setpoint       6.723
Filler.Level        5.205
Fill.Pressure       5.115
     RMSE  Rsquared       MAE 
0.1494891 0.2800593 0.1081350 
[1] "Brand Code D"
Random Forest 

494 samples
 31 predictor

No pre-processing
Resampling: Cross-Validated (10 fold) 
Summary of sample sizes: 445, 444, 444, 443, 445, 445, ... 
Resampling results across tuning parameters:

  mtry  splitrule   RMSE        Rsquared   MAE       
   2    variance    0.09560179  0.6000918  0.07518733
   2    extratrees  0.10168051  0.5461068  0.08064860
  16    variance    0.08510132  0.6411637  0.06556940
  16    extratrees  0.08551372  0.6489792  0.06581187
  31    variance    0.08554598  0.6243337  0.06515063
  31    extratrees  0.08301098  0.6581105  0.06417687

Tuning parameter 'min.node.size' was held constant at a value of 5
RMSE was used to select the optimal model using the smallest value.
The final values used for the model were mtry = 31, splitrule = extratrees
 and min.node.size = 5.
ranger variable importance

  only 20 most important variables shown (out of 31)

                  Overall
Mnf.Flow          100.000
Usage.cont         32.006
Pressure.Vacuum    21.384
Hyd.Pressure3      17.661
Carb.Pressure1     13.199
Density            10.258
Carb.Flow          10.235
Bowl.Setpoint       9.635
Temperature         8.722
Alch.Rel            8.448
Oxygen.Filler       7.708
Filler.Speed        7.016
Balling.Lvl         6.988
Filler.Level        5.828
Carb.Rel            5.806
Hyd.Pressure2       5.767
Pressure.Setpoint   4.864
Balling             4.761
Air.Pressurer       4.717
Hyd.Pressure1       3.489
      RMSE   Rsquared        MAE 
0.07072376 0.72239944 0.05442595 

XGBOOST

#converting datasets to matrices
#options(na.action="na.pass")
training2 <- train_df_imputed %>% drop_na(Brand.Code)
testing2 <- test_df_imputed %>% drop_na(Brand.Code)

trainingmx <- model.matrix(~.+0,data=training2[,names(training2) != c("PH")])
testingmx <- model.matrix(~.+0,data=testing2[,names(testing2) != c("PH")])

trainingdmx <- xgb.DMatrix(data = trainingmx, label=training2$PH)
testingdmx <- xgb.DMatrix(data = testingmx, label=testing2$PH)

#default parameters
params <- list(booster = "gbtree", objective = "reg:linear", eta=0.3, gamma=0, max_depth=6, min_child_weight=1, subsample=1, colsample_bytree=1)

#determine the best nround parameter (It controls the maximum number of iterations. For classification, it is similar to the number of trees to grow.)
xgbcv <- xgb.cv( params = params, data = trainingdmx, nrounds = 300, nfold = 5, showsd = T, stratified = T, print_every_n = 10, early_stop_rounds = 20, maximize = F) # best at 250 iterations
[13:35:26] WARNING: amalgamation/../src/objective/regression_obj.cu:171: reg:linear is now deprecated in favor of reg:squarederror.
[13:35:26] WARNING: amalgamation/../src/objective/regression_obj.cu:171: reg:linear is now deprecated in favor of reg:squarederror.
[13:35:26] WARNING: amalgamation/../src/objective/regression_obj.cu:171: reg:linear is now deprecated in favor of reg:squarederror.
[13:35:26] WARNING: amalgamation/../src/objective/regression_obj.cu:171: reg:linear is now deprecated in favor of reg:squarederror.
[13:35:26] WARNING: amalgamation/../src/objective/regression_obj.cu:171: reg:linear is now deprecated in favor of reg:squarederror.
[1] train-rmse:5.636689+0.001191    test-rmse:5.636691+0.007294 
[11]    train-rmse:0.191877+0.000727    test-rmse:0.205274+0.003268 
[21]    train-rmse:0.065786+0.003070    test-rmse:0.112896+0.004166 
[31]    train-rmse:0.048582+0.001118    test-rmse:0.110441+0.003673 
[41]    train-rmse:0.037274+0.000907    test-rmse:0.109369+0.003833 
[51]    train-rmse:0.029333+0.001435    test-rmse:0.108986+0.003925 
[61]    train-rmse:0.023415+0.001296    test-rmse:0.108948+0.003898 
[71]    train-rmse:0.019007+0.001450    test-rmse:0.108990+0.003848 
[81]    train-rmse:0.015069+0.001546    test-rmse:0.108852+0.003588 
[91]    train-rmse:0.011864+0.001225    test-rmse:0.108757+0.003588 
[101]   train-rmse:0.009614+0.000857    test-rmse:0.108758+0.003643 
[111]   train-rmse:0.007533+0.000748    test-rmse:0.108734+0.003609 
[121]   train-rmse:0.005879+0.000605    test-rmse:0.108714+0.003588 
[131]   train-rmse:0.004827+0.000475    test-rmse:0.108752+0.003567 
[141]   train-rmse:0.003856+0.000352    test-rmse:0.108705+0.003540 
[151]   train-rmse:0.003046+0.000266    test-rmse:0.108676+0.003480 
[161]   train-rmse:0.002426+0.000215    test-rmse:0.108692+0.003486 
[171]   train-rmse:0.001876+0.000176    test-rmse:0.108689+0.003470 
[181]   train-rmse:0.001547+0.000120    test-rmse:0.108687+0.003456 
[191]   train-rmse:0.001251+0.000055    test-rmse:0.108703+0.003449 
[201]   train-rmse:0.001059+0.000061    test-rmse:0.108697+0.003458 
[211]   train-rmse:0.001044+0.000064    test-rmse:0.108699+0.003458 
[221]   train-rmse:0.001044+0.000064    test-rmse:0.108699+0.003458 
[231]   train-rmse:0.001044+0.000064    test-rmse:0.108699+0.003458 
[241]   train-rmse:0.001044+0.000064    test-rmse:0.108699+0.003458 
[251]   train-rmse:0.001044+0.000064    test-rmse:0.108699+0.003458 
[261]   train-rmse:0.001044+0.000064    test-rmse:0.108699+0.003458 
[271]   train-rmse:0.001044+0.000064    test-rmse:0.108699+0.003458 
[281]   train-rmse:0.001044+0.000064    test-rmse:0.108699+0.003458 
[291]   train-rmse:0.001044+0.000064    test-rmse:0.108699+0.003458 
[300]   train-rmse:0.001044+0.000064    test-rmse:0.108699+0.003458 
xgb_model1 <- xgb.train (params = params, data = trainingdmx, nrounds = 250, watchlist = list(val=testingdmx,train=trainingdmx), print_every_n = 10, early_stop_round = 10, maximize = F)
[13:35:30] WARNING: amalgamation/../src/objective/regression_obj.cu:171: reg:linear is now deprecated in favor of reg:squarederror.
[13:35:30] WARNING: amalgamation/../src/learner.cc:573: 
Parameters: { "early_stop_round" } might not be used.

  This may not be accurate due to some parameters are only used in language bindings but
  passed down to XGBoost core.  Or some parameters are not used but slip through this
  verification. Please open an issue if you find above cases.


[1] val-rmse:5.631892   train-rmse:5.636401 
[11]    val-rmse:0.206970   train-rmse:0.191570 
[21]    val-rmse:0.118756   train-rmse:0.073255 
[31]    val-rmse:0.117504   train-rmse:0.055569 
[41]    val-rmse:0.118054   train-rmse:0.044920 
[51]    val-rmse:0.118400   train-rmse:0.037728 
[61]    val-rmse:0.118123   train-rmse:0.028691 
[71]    val-rmse:0.117905   train-rmse:0.023346 
[81]    val-rmse:0.117762   train-rmse:0.020473 
[91]    val-rmse:0.117487   train-rmse:0.016180 
[101]   val-rmse:0.117834   train-rmse:0.013632 
[111]   val-rmse:0.118338   train-rmse:0.011054 
[121]   val-rmse:0.118221   train-rmse:0.009243 
[131]   val-rmse:0.118145   train-rmse:0.007796 
[141]   val-rmse:0.118190   train-rmse:0.006343 
[151]   val-rmse:0.118222   train-rmse:0.005275 
[161]   val-rmse:0.118205   train-rmse:0.004430 
[171]   val-rmse:0.118221   train-rmse:0.003840 
[181]   val-rmse:0.118190   train-rmse:0.003254 
[191]   val-rmse:0.118183   train-rmse:0.002674 
[201]   val-rmse:0.118175   train-rmse:0.002286 
[211]   val-rmse:0.118176   train-rmse:0.001841 
[221]   val-rmse:0.118203   train-rmse:0.001642 
[231]   val-rmse:0.118196   train-rmse:0.001447 
[241]   val-rmse:0.118173   train-rmse:0.001168 
[250]   val-rmse:0.118179   train-rmse:0.001059 
xgbpred <- predict(xgb_model1,testingdmx)

mat <- xgb.importance (feature_names = colnames(trainingmx),model = xgb_model1)

xgb.plot.importance (importance_matrix = mat)

Stepwise Linear Regression

# Loading latter to avoid the select clash with dplyr
library(MASS)
full_model <- lm(PH ~., data = train_df_imputed)
# Stepwise regression model
lm_model <- stepAIC(full_model, direction = "both", trace = FALSE)
summary(lm_model)

Call:
lm(formula = PH ~ Brand.Code + Fill.Ounces + PC.Volume + Carb.Temp + 
    PSC + PSC.Fill + Mnf.Flow + Carb.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Filler.Level + Temperature + Usage.cont + 
    Carb.Flow + Density + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + Balling.Lvl, 
    data = train_df_imputed)

Residuals:
     Min       1Q   Median       3Q      Max 
-0.50821 -0.07742  0.00955  0.08749  0.84131 

Coefficients:
                      Estimate   Std. Error t value             Pr(>|t|)    
(Intercept)       10.210718397  0.892342607  11.443 < 0.0000000000000002 ***
Brand.CodeB        0.061418994  0.023604531   2.602             0.009336 ** 
Brand.CodeC       -0.076889040  0.023495325  -3.273             0.001084 ** 
Brand.CodeD        0.050398832  0.015726853   3.205             0.001373 ** 
Fill.Ounces       -0.085255811  0.034776140  -2.452             0.014308 *  
PC.Volume         -0.106846382  0.056336590  -1.897             0.058026 .  
Carb.Temp          0.001416959  0.000707962   2.001             0.045476 *  
PSC               -0.095513584  0.062840502  -1.520             0.128683    
PSC.Fill          -0.039640343  0.025217642  -1.572             0.116123    
Mnf.Flow          -0.000714141  0.000049848 -14.326 < 0.0000000000000002 ***
Carb.Pressure1     0.007380093  0.000751549   9.820 < 0.0000000000000002 ***
Hyd.Pressure2     -0.000955024  0.000522096  -1.829             0.067514 .  
Hyd.Pressure3      0.003209175  0.000633544   5.065      0.0000004443280 ***
Filler.Level      -0.001444030  0.000602502  -2.397             0.016632 *  
Temperature       -0.015520488  0.002387530  -6.501      0.0000000001004 ***
Usage.cont        -0.008299171  0.001246156  -6.660      0.0000000000352 ***
Carb.Flow          0.000010901  0.000003543   3.077             0.002122 ** 
Density           -0.117168264  0.030826298  -3.801             0.000148 ***
Balling           -0.101578401  0.024050549  -4.224      0.0000251126710 ***
Pressure.Vacuum   -0.022522430  0.007759207  -2.903             0.003740 ** 
Oxygen.Filler     -0.343503741  0.080077747  -4.290      0.0000187374305 ***
Bowl.Setpoint      0.003736902  0.000629896   5.933      0.0000000034973 ***
Pressure.Setpoint -0.006317920  0.001776782  -3.556             0.000385 ***
Alch.Rel           0.070222991  0.022747887   3.087             0.002049 ** 
Balling.Lvl        0.124027200  0.022174250   5.593      0.0000000252931 ***
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

Residual standard error: 0.1312 on 2030 degrees of freedom
Multiple R-squared:  0.4274,    Adjusted R-squared:  0.4206 
F-statistic: 63.14 on 24 and 2030 DF,  p-value: < 0.00000000000000022
set.seed(seed)
tc <- trainControl(method = "cv", number = 10, allowParallel = TRUE)
lm_fit <- train(PH ~ ., data = train_df_imputed, method = "glmStepAIC", trControl = tc)
Start:  AIC=-2245.67
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + Carb.Temp + PSC + 
    PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Fill.Pressure + 
    Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Pressure      1   30.909 -2247.7
- Fill.Pressure      1   30.909 -2247.7
- MFR                1   30.909 -2247.7
- Carb.Volume        1   30.911 -2247.6
- Filler.Speed       1   30.913 -2247.4
- Hyd.Pressure1      1   30.918 -2247.2
- Carb.Temp          1   30.918 -2247.1
- Hyd.Pressure4      1   30.918 -2247.1
- PSC                1   30.919 -2247.1
- Carb.Rel           1   30.921 -2247.0
- PSC.CO2            1   30.934 -2246.2
- Air.Pressurer      1   30.937 -2246.0
<none>                   30.909 -2245.7
- Alch.Rel           1   30.970 -2244.0
- PSC.Fill           1   30.978 -2243.5
- Fill.Ounces        1   30.989 -2242.9
- Hyd.Pressure2      1   30.998 -2242.4
- Brand.CodeC        1   30.998 -2242.4
- Pressure.Setpoint  1   31.008 -2241.7
- PC.Volume          1   31.010 -2241.6
- Filler.Level       1   31.015 -2241.4
- Carb.Flow          1   31.030 -2240.4
- Pressure.Vacuum    1   31.046 -2239.5
- Brand.CodeD        1   31.073 -2237.9
- Balling            1   31.076 -2237.7
- Brand.CodeB        1   31.079 -2237.5
- Density            1   31.172 -2232.0
- Oxygen.Filler      1   31.214 -2229.6
- Hyd.Pressure3      1   31.281 -2225.6
- Balling.Lvl        1   31.410 -2218.0
- Bowl.Setpoint      1   31.410 -2218.0
- Temperature        1   31.467 -2214.6
- Usage.cont         1   31.627 -2205.2
- Carb.Pressure1     1   32.242 -2169.6
- Mnf.Flow           1   34.015 -2070.6

Step:  AIC=-2247.67
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    MFR + Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Air.Pressurer + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Fill.Pressure      1   30.909 -2249.7
- MFR                1   30.909 -2249.7
- Carb.Volume        1   30.911 -2249.6
- Filler.Speed       1   30.914 -2249.4
- Hyd.Pressure1      1   30.918 -2249.2
- Hyd.Pressure4      1   30.918 -2249.1
- PSC                1   30.919 -2249.1
- Carb.Rel           1   30.921 -2248.9
- PSC.CO2            1   30.934 -2248.2
- Air.Pressurer      1   30.937 -2248.0
<none>                   30.909 -2247.7
- Alch.Rel           1   30.970 -2246.0
- PSC.Fill           1   30.978 -2245.5
- Fill.Ounces        1   30.989 -2244.9
- Hyd.Pressure2      1   30.998 -2244.4
- Brand.CodeC        1   30.998 -2244.4
- Carb.Temp          1   31.003 -2244.1
- Pressure.Setpoint  1   31.008 -2243.7
- PC.Volume          1   31.010 -2243.6
- Filler.Level       1   31.015 -2243.4
- Carb.Flow          1   31.030 -2242.4
- Pressure.Vacuum    1   31.046 -2241.5
- Brand.CodeD        1   31.074 -2239.9
- Balling            1   31.076 -2239.7
- Brand.CodeB        1   31.080 -2239.5
- Density            1   31.172 -2234.0
- Oxygen.Filler      1   31.214 -2231.5
- Hyd.Pressure3      1   31.282 -2227.5
- Balling.Lvl        1   31.410 -2220.0
- Bowl.Setpoint      1   31.410 -2219.9
- Temperature        1   31.468 -2216.6
- Usage.cont         1   31.627 -2207.2
- Carb.Pressure1     1   32.245 -2171.4
- Mnf.Flow           1   34.018 -2072.5

Step:  AIC=-2249.65
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + MFR + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Air.Pressurer + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- MFR                1   30.910 -2251.6
- Carb.Volume        1   30.911 -2251.5
- Filler.Speed       1   30.914 -2251.4
- Hyd.Pressure1      1   30.918 -2251.1
- Hyd.Pressure4      1   30.919 -2251.1
- PSC                1   30.919 -2251.1
- Carb.Rel           1   30.922 -2250.9
- PSC.CO2            1   30.935 -2250.1
- Air.Pressurer      1   30.937 -2250.0
<none>                   30.909 -2249.7
- Alch.Rel           1   30.970 -2248.0
- PSC.Fill           1   30.979 -2247.5
- Fill.Ounces        1   30.989 -2246.9
- Hyd.Pressure2      1   30.998 -2246.4
- Brand.CodeC        1   30.998 -2246.3
- Carb.Temp          1   31.003 -2246.1
- PC.Volume          1   31.010 -2245.6
- Filler.Level       1   31.015 -2245.3
- Carb.Flow          1   31.030 -2244.4
- Pressure.Vacuum    1   31.046 -2243.5
- Pressure.Setpoint  1   31.059 -2242.7
- Brand.CodeD        1   31.075 -2241.8
- Balling            1   31.077 -2241.7
- Brand.CodeB        1   31.080 -2241.5
- Density            1   31.174 -2235.9
- Oxygen.Filler      1   31.215 -2233.5
- Hyd.Pressure3      1   31.289 -2229.1
- Balling.Lvl        1   31.411 -2221.9
- Bowl.Setpoint      1   31.417 -2221.5
- Temperature        1   31.473 -2218.3
- Usage.cont         1   31.628 -2209.2
- Carb.Pressure1     1   32.256 -2172.8
- Mnf.Flow           1   34.023 -2074.2

Step:  AIC=-2251.63
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Air.Pressurer + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Volume        1   30.912 -2253.5
- Filler.Speed       1   30.917 -2253.2
- Hyd.Pressure1      1   30.918 -2253.1
- Hyd.Pressure4      1   30.919 -2253.1
- PSC                1   30.920 -2253.0
- Carb.Rel           1   30.922 -2252.9
- PSC.CO2            1   30.935 -2252.1
- Air.Pressurer      1   30.937 -2252.0
<none>                   30.910 -2251.6
- Alch.Rel           1   30.970 -2250.0
- PSC.Fill           1   30.979 -2249.5
- Fill.Ounces        1   30.990 -2248.9
- Hyd.Pressure2      1   30.998 -2248.4
- Brand.CodeC        1   30.999 -2248.3
- Carb.Temp          1   31.003 -2248.0
- PC.Volume          1   31.011 -2247.6
- Filler.Level       1   31.016 -2247.3
- Carb.Flow          1   31.031 -2246.4
- Pressure.Vacuum    1   31.046 -2245.5
- Pressure.Setpoint  1   31.060 -2244.7
- Brand.CodeD        1   31.075 -2243.8
- Balling            1   31.077 -2243.7
- Brand.CodeB        1   31.080 -2243.5
- Density            1   31.174 -2237.9
- Oxygen.Filler      1   31.215 -2235.5
- Hyd.Pressure3      1   31.289 -2231.1
- Balling.Lvl        1   31.412 -2223.8
- Bowl.Setpoint      1   31.417 -2223.5
- Temperature        1   31.474 -2220.2
- Usage.cont         1   31.637 -2210.6
- Carb.Pressure1     1   32.256 -2174.8
- Mnf.Flow           1   34.025 -2076.1

Step:  AIC=-2253.52
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Hyd.Pressure4 + Filler.Level + Filler.Speed + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Filler.Speed       1   30.919 -2255.1
- Hyd.Pressure4      1   30.920 -2255.0
- Hyd.Pressure1      1   30.921 -2255.0
- Carb.Rel           1   30.922 -2254.9
- PSC                1   30.922 -2254.9
- PSC.CO2            1   30.936 -2254.1
- Air.Pressurer      1   30.941 -2253.7
<none>                   30.912 -2253.5
- Alch.Rel           1   30.974 -2251.8
- PSC.Fill           1   30.981 -2251.4
- Fill.Ounces        1   31.000 -2250.3
- Brand.CodeC        1   31.000 -2250.2
- Hyd.Pressure2      1   31.001 -2250.2
- PC.Volume          1   31.012 -2249.5
- Filler.Level       1   31.016 -2249.3
- Carb.Temp          1   31.018 -2249.2
- Carb.Flow          1   31.036 -2248.1
- Pressure.Vacuum    1   31.047 -2247.4
- Pressure.Setpoint  1   31.065 -2246.4
- Brand.CodeD        1   31.079 -2245.5
- Balling            1   31.081 -2245.4
- Brand.CodeB        1   31.097 -2244.5
- Density            1   31.176 -2239.8
- Oxygen.Filler      1   31.215 -2237.5
- Hyd.Pressure3      1   31.298 -2232.6
- Bowl.Setpoint      1   31.417 -2225.5
- Balling.Lvl        1   31.423 -2225.2
- Temperature        1   31.474 -2222.2
- Usage.cont         1   31.645 -2212.1
- Carb.Pressure1     1   32.262 -2176.5
- Mnf.Flow           1   34.036 -2077.5

Step:  AIC=-2255.1
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Hyd.Pressure4 + Filler.Level + Temperature + Usage.cont + 
    Carb.Flow + Density + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure4      1   30.923 -2256.8
- Hyd.Pressure1      1   30.926 -2256.7
- PSC                1   30.928 -2256.5
- Carb.Rel           1   30.929 -2256.4
- PSC.CO2            1   30.943 -2255.6
- Air.Pressurer      1   30.949 -2255.3
<none>                   30.919 -2255.1
- Alch.Rel           1   30.975 -2253.7
- PSC.Fill           1   30.988 -2252.9
- Brand.CodeC        1   31.002 -2252.1
- Hyd.Pressure2      1   31.003 -2252.1
- Fill.Ounces        1   31.005 -2251.9
- PC.Volume          1   31.022 -2250.9
- Filler.Level       1   31.026 -2250.7
- Carb.Temp          1   31.026 -2250.7
- Pressure.Vacuum    1   31.048 -2249.4
- Pressure.Setpoint  1   31.078 -2247.6
- Brand.CodeD        1   31.081 -2247.4
- Balling            1   31.082 -2247.3
- Carb.Flow          1   31.110 -2245.7
- Brand.CodeB        1   31.114 -2245.4
- Density            1   31.186 -2241.2
- Oxygen.Filler      1   31.222 -2239.0
- Hyd.Pressure3      1   31.314 -2233.6
- Balling.Lvl        1   31.425 -2227.1
- Bowl.Setpoint      1   31.448 -2225.7
- Temperature        1   31.522 -2221.4
- Usage.cont         1   31.645 -2214.1
- Carb.Pressure1     1   32.270 -2178.0
- Mnf.Flow           1   34.064 -2077.9

Step:  AIC=-2256.85
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Filler.Level + Temperature + Usage.cont + Carb.Flow + Density + 
    Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Air.Pressurer + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure1      1   30.931 -2258.4
- PSC                1   30.933 -2258.3
- Carb.Rel           1   30.934 -2258.2
- PSC.CO2            1   30.947 -2257.4
- Air.Pressurer      1   30.953 -2257.1
<none>                   30.923 -2256.8
- Alch.Rel           1   30.982 -2255.3
- PSC.Fill           1   30.993 -2254.7
- Hyd.Pressure2      1   31.012 -2253.6
- Fill.Ounces        1   31.014 -2253.4
- Brand.CodeC        1   31.016 -2253.3
- PC.Volume          1   31.025 -2252.8
- Filler.Level       1   31.027 -2252.7
- Carb.Temp          1   31.030 -2252.4
- Pressure.Vacuum    1   31.072 -2250.0
- Pressure.Setpoint  1   31.080 -2249.5
- Brand.CodeD        1   31.085 -2249.2
- Carb.Flow          1   31.114 -2247.4
- Brand.CodeB        1   31.114 -2247.4
- Balling            1   31.115 -2247.4
- Density            1   31.193 -2242.8
- Oxygen.Filler      1   31.226 -2240.8
- Hyd.Pressure3      1   31.317 -2235.4
- Bowl.Setpoint      1   31.451 -2227.5
- Balling.Lvl        1   31.466 -2226.7
- Temperature        1   31.522 -2223.3
- Usage.cont         1   31.651 -2215.8
- Carb.Pressure1     1   32.296 -2178.5
- Mnf.Flow           1   34.094 -2078.3

Step:  AIC=-2258.36
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Air.Pressurer + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- PSC                1   30.942 -2259.7
- Carb.Rel           1   30.943 -2259.7
- PSC.CO2            1   30.956 -2258.9
- Air.Pressurer      1   30.964 -2258.4
<none>                   30.931 -2258.4
- Alch.Rel           1   30.994 -2256.6
- PSC.Fill           1   31.000 -2256.3
- Hyd.Pressure2      1   31.012 -2255.5
- Fill.Ounces        1   31.022 -2254.9
- PC.Volume          1   31.025 -2254.8
- Brand.CodeC        1   31.027 -2254.6
- Filler.Level       1   31.031 -2254.4
- Carb.Temp          1   31.037 -2254.1
- Pressure.Vacuum    1   31.073 -2251.9
- Pressure.Setpoint  1   31.084 -2251.2
- Brand.CodeD        1   31.089 -2250.9
- Brand.CodeB        1   31.118 -2249.2
- Carb.Flow          1   31.120 -2249.1
- Balling            1   31.131 -2248.4
- Density            1   31.202 -2244.3
- Oxygen.Filler      1   31.235 -2242.2
- Hyd.Pressure3      1   31.336 -2236.3
- Bowl.Setpoint      1   31.465 -2228.7
- Balling.Lvl        1   31.479 -2227.9
- Temperature        1   31.527 -2225.1
- Usage.cont         1   31.667 -2216.9
- Carb.Pressure1     1   32.296 -2180.5
- Mnf.Flow           1   34.109 -2079.5

Step:  AIC=-2259.71
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Rel           1   30.953 -2261.0
- PSC.CO2            1   30.968 -2260.1
<none>                   30.942 -2259.7
- Air.Pressurer      1   30.977 -2259.6
- Alch.Rel           1   31.004 -2258.0
- Hyd.Pressure2      1   31.023 -2256.8
- PSC.Fill           1   31.024 -2256.8
- Fill.Ounces        1   31.033 -2256.3
- Filler.Level       1   31.041 -2255.8
- Brand.CodeC        1   31.042 -2255.8
- Carb.Temp          1   31.050 -2255.2
- PC.Volume          1   31.060 -2254.7
- Pressure.Vacuum    1   31.094 -2252.7
- Pressure.Setpoint  1   31.094 -2252.7
- Brand.CodeD        1   31.100 -2252.3
- Brand.CodeB        1   31.126 -2250.8
- Carb.Flow          1   31.133 -2250.3
- Balling            1   31.146 -2249.5
- Density            1   31.211 -2245.7
- Oxygen.Filler      1   31.248 -2243.5
- Hyd.Pressure3      1   31.354 -2237.2
- Bowl.Setpoint      1   31.475 -2230.1
- Balling.Lvl        1   31.493 -2229.1
- Temperature        1   31.532 -2226.8
- Usage.cont         1   31.693 -2217.3
- Carb.Pressure1     1   32.316 -2181.4
- Mnf.Flow           1   34.215 -2075.8

Step:  AIC=-2261.04
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + 
    Alch.Rel + Balling.Lvl

                    Df Deviance     AIC
- PSC.CO2            1   30.980 -2261.4
<none>                   30.953 -2261.0
- Air.Pressurer      1   30.990 -2260.8
- Alch.Rel           1   31.025 -2258.8
- Hyd.Pressure2      1   31.032 -2258.3
- PSC.Fill           1   31.036 -2258.1
- Fill.Ounces        1   31.048 -2257.4
- Filler.Level       1   31.050 -2257.3
- Brand.CodeC        1   31.051 -2257.2
- Carb.Temp          1   31.061 -2256.6
- PC.Volume          1   31.072 -2256.0
- Pressure.Setpoint  1   31.102 -2254.2
- Pressure.Vacuum    1   31.104 -2254.0
- Brand.CodeD        1   31.126 -2252.8
- Carb.Flow          1   31.141 -2251.9
- Brand.CodeB        1   31.144 -2251.7
- Balling            1   31.175 -2249.8
- Density            1   31.212 -2247.7
- Oxygen.Filler      1   31.261 -2244.8
- Hyd.Pressure3      1   31.366 -2238.5
- Bowl.Setpoint      1   31.491 -2231.2
- Temperature        1   31.533 -2228.7
- Balling.Lvl        1   31.583 -2225.8
- Usage.cont         1   31.709 -2218.4
- Carb.Pressure1     1   32.350 -2181.4
- Mnf.Flow           1   34.244 -2076.2

Step:  AIC=-2261.43
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC.Fill + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + 
    Alch.Rel + Balling.Lvl

                    Df Deviance     AIC
<none>                   30.980 -2261.4
- Air.Pressurer      1   31.015 -2261.3
- Hyd.Pressure2      1   31.055 -2259.0
- Alch.Rel           1   31.057 -2258.8
- Fill.Ounces        1   31.074 -2257.8
- Filler.Level       1   31.075 -2257.8
- Brand.CodeC        1   31.082 -2257.4
- PSC.Fill           1   31.085 -2257.2
- Carb.Temp          1   31.085 -2257.2
- PC.Volume          1   31.094 -2256.6
- Pressure.Setpoint  1   31.132 -2254.4
- Pressure.Vacuum    1   31.134 -2254.3
- Brand.CodeD        1   31.147 -2253.5
- Carb.Flow          1   31.165 -2252.4
- Brand.CodeB        1   31.168 -2252.2
- Balling            1   31.202 -2250.2
- Density            1   31.239 -2248.0
- Oxygen.Filler      1   31.290 -2245.0
- Hyd.Pressure3      1   31.385 -2239.4
- Bowl.Setpoint      1   31.515 -2231.8
- Temperature        1   31.564 -2228.9
- Balling.Lvl        1   31.604 -2226.6
- Usage.cont         1   31.732 -2219.1
- Carb.Pressure1     1   32.377 -2181.9
- Mnf.Flow           1   34.279 -2076.3
Start:  AIC=-2255.08
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + Carb.Temp + PSC + 
    PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Fill.Pressure + 
    Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- MFR                1   30.791 -2257.0
- Carb.Pressure      1   30.791 -2257.0
- Carb.Temp          1   30.792 -2256.9
- Air.Pressurer      1   30.793 -2256.9
- Fill.Pressure      1   30.806 -2256.1
- PSC                1   30.807 -2256.1
- PSC.Fill           1   30.812 -2255.8
- Carb.Flow          1   30.812 -2255.8
- Carb.Volume        1   30.812 -2255.8
- PSC.CO2            1   30.814 -2255.6
- Carb.Rel           1   30.816 -2255.5
- Hyd.Pressure4      1   30.819 -2255.3
<none>                   30.790 -2255.1
- Brand.CodeB        1   30.829 -2254.7
- Filler.Speed       1   30.837 -2254.2
- PC.Volume          1   30.849 -2253.5
- Hyd.Pressure1      1   30.856 -2253.1
- Fill.Ounces        1   30.871 -2252.2
- Filler.Level       1   30.871 -2252.2
- Hyd.Pressure2      1   30.884 -2251.4
- Brand.CodeD        1   30.896 -2250.7
- Pressure.Setpoint  1   30.965 -2246.6
- Pressure.Vacuum    1   30.966 -2246.5
- Density            1   30.980 -2245.7
- Brand.CodeC        1   31.023 -2243.1
- Balling            1   31.076 -2240.0
- Balling.Lvl        1   31.082 -2239.6
- Alch.Rel           1   31.085 -2239.4
- Hyd.Pressure3      1   31.102 -2238.4
- Bowl.Setpoint      1   31.178 -2233.9
- Oxygen.Filler      1   31.228 -2230.9
- Temperature        1   31.250 -2229.6
- Usage.cont         1   31.393 -2221.2
- Carb.Pressure1     1   32.257 -2171.0
- Mnf.Flow           1   34.372 -2053.5

Step:  AIC=-2257.03
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + Carb.Temp + PSC + 
    PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Fill.Pressure + 
    Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Pressure      1   30.792 -2259.0
- Carb.Temp          1   30.793 -2258.9
- Air.Pressurer      1   30.793 -2258.9
- Fill.Pressure      1   30.806 -2258.1
- PSC                1   30.807 -2258.0
- Carb.Flow          1   30.812 -2257.8
- PSC.Fill           1   30.813 -2257.7
- Carb.Volume        1   30.813 -2257.7
- PSC.CO2            1   30.815 -2257.6
- Carb.Rel           1   30.817 -2257.4
- Hyd.Pressure4      1   30.819 -2257.3
<none>                   30.791 -2257.0
- Brand.CodeB        1   30.829 -2256.7
- PC.Volume          1   30.850 -2255.5
- Hyd.Pressure1      1   30.856 -2255.1
- Filler.Speed       1   30.859 -2254.9
- Fill.Ounces        1   30.871 -2254.2
- Filler.Level       1   30.872 -2254.2
- Hyd.Pressure2      1   30.884 -2253.4
- Brand.CodeD        1   30.896 -2252.7
- Pressure.Setpoint  1   30.965 -2248.6
- Pressure.Vacuum    1   30.966 -2248.5
- Density            1   30.980 -2247.7
- Brand.CodeC        1   31.026 -2244.9
- Balling            1   31.076 -2242.0
- Balling.Lvl        1   31.082 -2241.6
- Alch.Rel           1   31.085 -2241.4
- Hyd.Pressure3      1   31.103 -2240.3
- Bowl.Setpoint      1   31.179 -2235.9
- Oxygen.Filler      1   31.228 -2232.9
- Temperature        1   31.254 -2231.4
- Usage.cont         1   31.400 -2222.8
- Carb.Pressure1     1   32.257 -2173.0
- Mnf.Flow           1   34.377 -2055.2

Step:  AIC=-2258.96
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Air.Pressurer + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Air.Pressurer      1   30.795 -2260.8
- Fill.Pressure      1   30.807 -2260.0
- PSC                1   30.809 -2259.9
- Carb.Flow          1   30.813 -2259.7
- PSC.Fill           1   30.814 -2259.6
- PSC.CO2            1   30.816 -2259.5
- Carb.Rel           1   30.819 -2259.3
- Carb.Volume        1   30.819 -2259.3
- Hyd.Pressure4      1   30.820 -2259.3
<none>                   30.792 -2259.0
- Brand.CodeB        1   30.830 -2258.6
- PC.Volume          1   30.852 -2257.4
- Hyd.Pressure1      1   30.857 -2257.1
- Filler.Speed       1   30.860 -2256.9
- Carb.Temp          1   30.862 -2256.8
- Fill.Ounces        1   30.872 -2256.2
- Filler.Level       1   30.872 -2256.1
- Hyd.Pressure2      1   30.886 -2255.3
- Brand.CodeD        1   30.897 -2254.6
- Pressure.Setpoint  1   30.965 -2250.6
- Pressure.Vacuum    1   30.966 -2250.5
- Density            1   30.981 -2249.6
- Brand.CodeC        1   31.027 -2246.9
- Balling            1   31.077 -2243.9
- Balling.Lvl        1   31.083 -2243.5
- Alch.Rel           1   31.088 -2243.2
- Hyd.Pressure3      1   31.106 -2242.2
- Bowl.Setpoint      1   31.179 -2237.9
- Oxygen.Filler      1   31.230 -2234.8
- Temperature        1   31.259 -2233.1
- Usage.cont         1   31.401 -2224.7
- Carb.Pressure1     1   32.257 -2175.0
- Mnf.Flow           1   34.380 -2057.0

Step:  AIC=-2260.78
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Fill.Pressure      1   30.811 -2261.8
- PSC                1   30.812 -2261.8
- Carb.Flow          1   30.816 -2261.5
- PSC.Fill           1   30.817 -2261.5
- PSC.CO2            1   30.819 -2261.3
- Hyd.Pressure4      1   30.823 -2261.1
- Carb.Rel           1   30.823 -2261.1
- Carb.Volume        1   30.824 -2261.0
<none>                   30.795 -2260.8
- Brand.CodeB        1   30.833 -2260.5
- PC.Volume          1   30.855 -2259.2
- Hyd.Pressure1      1   30.862 -2258.7
- Filler.Speed       1   30.863 -2258.7
- Carb.Temp          1   30.864 -2258.7
- Filler.Level       1   30.876 -2257.9
- Fill.Ounces        1   30.876 -2257.9
- Hyd.Pressure2      1   30.886 -2257.3
- Brand.CodeD        1   30.900 -2256.5
- Pressure.Setpoint  1   30.973 -2252.1
- Pressure.Vacuum    1   30.980 -2251.7
- Density            1   30.985 -2251.4
- Brand.CodeC        1   31.031 -2248.7
- Balling            1   31.079 -2245.8
- Balling.Lvl        1   31.085 -2245.4
- Alch.Rel           1   31.092 -2245.0
- Hyd.Pressure3      1   31.109 -2244.0
- Bowl.Setpoint      1   31.187 -2239.4
- Oxygen.Filler      1   31.245 -2235.9
- Temperature        1   31.263 -2234.9
- Usage.cont         1   31.401 -2226.7
- Carb.Pressure1     1   32.257 -2177.0
- Mnf.Flow           1   34.380 -2059.0

Step:  AIC=-2261.8
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- PSC                1   30.828 -2262.8
- PSC.Fill           1   30.834 -2262.4
- PSC.CO2            1   30.834 -2262.4
- Carb.Flow          1   30.836 -2262.3
- Hyd.Pressure4      1   30.838 -2262.2
- Carb.Rel           1   30.838 -2262.2
- Carb.Volume        1   30.839 -2262.1
<none>                   30.811 -2261.8
- Brand.CodeB        1   30.850 -2261.5
- Hyd.Pressure1      1   30.874 -2260.0
- PC.Volume          1   30.876 -2259.9
- Filler.Speed       1   30.878 -2259.8
- Carb.Temp          1   30.881 -2259.6
- Fill.Ounces        1   30.890 -2259.1
- Filler.Level       1   30.904 -2258.2
- Hyd.Pressure2      1   30.908 -2258.0
- Brand.CodeD        1   30.912 -2257.8
- Pressure.Setpoint  1   30.987 -2253.3
- Density            1   30.999 -2252.5
- Pressure.Vacuum    1   31.002 -2252.4
- Brand.CodeC        1   31.045 -2249.8
- Balling            1   31.107 -2246.1
- Alch.Rel           1   31.112 -2245.8
- Balling.Lvl        1   31.113 -2245.8
- Hyd.Pressure3      1   31.157 -2243.1
- Bowl.Setpoint      1   31.235 -2238.5
- Oxygen.Filler      1   31.258 -2237.2
- Temperature        1   31.308 -2234.2
- Usage.cont         1   31.410 -2228.2
- Carb.Pressure1     1   32.260 -2178.8
- Mnf.Flow           1   34.386 -2060.7

Step:  AIC=-2262.81
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- PSC.CO2            1   30.852 -2263.3
- Hyd.Pressure4      1   30.854 -2263.2
- Carb.Flow          1   30.854 -2263.2
- Carb.Rel           1   30.855 -2263.2
- Carb.Volume        1   30.858 -2263.0
- PSC.Fill           1   30.859 -2262.9
<none>                   30.828 -2262.8
- Brand.CodeB        1   30.864 -2262.6
- Filler.Speed       1   30.892 -2260.9
- Hyd.Pressure1      1   30.893 -2260.9
- Carb.Temp          1   30.900 -2260.5
- Fill.Ounces        1   30.906 -2260.1
- PC.Volume          1   30.915 -2259.6
- Filler.Level       1   30.919 -2259.3
- Hyd.Pressure2      1   30.926 -2258.9
- Brand.CodeD        1   30.927 -2258.9
- Pressure.Setpoint  1   31.003 -2254.3
- Density            1   31.013 -2253.7
- Pressure.Vacuum    1   31.030 -2252.7
- Brand.CodeC        1   31.068 -2250.4
- Balling            1   31.125 -2247.1
- Balling.Lvl        1   31.128 -2246.9
- Alch.Rel           1   31.128 -2246.8
- Hyd.Pressure3      1   31.180 -2243.8
- Bowl.Setpoint      1   31.251 -2239.6
- Oxygen.Filler      1   31.277 -2238.0
- Temperature        1   31.320 -2235.5
- Usage.cont         1   31.434 -2228.7
- Carb.Pressure1     1   32.287 -2179.2
- Mnf.Flow           1   34.494 -2056.9

Step:  AIC=-2263.32
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC.Fill + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Hyd.Pressure4 + Filler.Level + Filler.Speed + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure4      1   30.878 -2263.8
- Carb.Flow          1   30.878 -2263.8
- Carb.Rel           1   30.881 -2263.6
- Carb.Volume        1   30.882 -2263.5
<none>                   30.852 -2263.3
- Brand.CodeB        1   30.889 -2263.1
- PSC.Fill           1   30.897 -2262.7
- Filler.Speed       1   30.915 -2261.6
- Hyd.Pressure1      1   30.919 -2261.3
- Carb.Temp          1   30.923 -2261.1
- Fill.Ounces        1   30.931 -2260.6
- PC.Volume          1   30.937 -2260.3
- Filler.Level       1   30.942 -2260.0
- Hyd.Pressure2      1   30.946 -2259.7
- Brand.CodeD        1   30.947 -2259.7
- Pressure.Setpoint  1   31.033 -2254.5
- Density            1   31.040 -2254.1
- Pressure.Vacuum    1   31.054 -2253.3
- Brand.CodeC        1   31.096 -2250.8
- Balling            1   31.148 -2247.7
- Balling.Lvl        1   31.148 -2247.7
- Alch.Rel           1   31.163 -2246.8
- Hyd.Pressure3      1   31.197 -2244.8
- Bowl.Setpoint      1   31.272 -2240.3
- Oxygen.Filler      1   31.305 -2238.3
- Temperature        1   31.349 -2235.8
- Usage.cont         1   31.459 -2229.3
- Carb.Pressure1     1   32.304 -2180.3
- Mnf.Flow           1   34.529 -2057.0

Step:  AIC=-2263.79
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC.Fill + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Carb.Flow          1   30.902 -2264.3
- Carb.Rel           1   30.906 -2264.1
- Carb.Volume        1   30.906 -2264.1
- Brand.CodeB        1   30.909 -2264.0
<none>                   30.878 -2263.8
- Filler.Speed       1   30.919 -2263.3
- PSC.Fill           1   30.923 -2263.1
- Hyd.Pressure1      1   30.946 -2261.7
- Carb.Temp          1   30.949 -2261.6
- Brand.CodeD        1   30.952 -2261.3
- Fill.Ounces        1   30.960 -2260.9
- PC.Volume          1   30.960 -2260.9
- Filler.Level       1   30.962 -2260.8
- Hyd.Pressure2      1   30.975 -2260.0
- Pressure.Setpoint  1   31.056 -2255.2
- Density            1   31.072 -2254.2
- Pressure.Vacuum    1   31.093 -2253.0
- Brand.CodeC        1   31.137 -2250.4
- Alch.Rel           1   31.186 -2247.4
- Balling.Lvl        1   31.197 -2246.8
- Balling            1   31.201 -2246.5
- Hyd.Pressure3      1   31.226 -2245.0
- Bowl.Setpoint      1   31.283 -2241.7
- Oxygen.Filler      1   31.329 -2239.0
- Temperature        1   31.371 -2236.5
- Usage.cont         1   31.477 -2230.2
- Carb.Pressure1     1   32.331 -2180.7
- Mnf.Flow           1   34.546 -2058.1

Step:  AIC=-2264.35
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC.Fill + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Density + Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Brand.CodeB        1   30.927 -2264.9
- Carb.Rel           1   30.928 -2264.8
- Carb.Volume        1   30.934 -2264.4
<none>                   30.902 -2264.3
- PSC.Fill           1   30.943 -2263.9
- PC.Volume          1   30.972 -2262.2
- Carb.Temp          1   30.974 -2262.0
- Brand.CodeD        1   30.975 -2262.0
- Hyd.Pressure1      1   30.975 -2262.0
- Fill.Ounces        1   30.989 -2261.1
- Filler.Level       1   30.991 -2261.0
- Filler.Speed       1   31.009 -2259.9
- Hyd.Pressure2      1   31.014 -2259.7
- Density            1   31.077 -2255.9
- Pressure.Setpoint  1   31.080 -2255.8
- Pressure.Vacuum    1   31.131 -2252.7
- Brand.CodeC        1   31.186 -2249.4
- Balling.Lvl        1   31.227 -2247.0
- Alch.Rel           1   31.232 -2246.7
- Hyd.Pressure3      1   31.268 -2244.6
- Balling            1   31.278 -2244.0
- Bowl.Setpoint      1   31.291 -2243.2
- Oxygen.Filler      1   31.352 -2239.6
- Temperature        1   31.394 -2237.1
- Usage.cont         1   31.574 -2226.5
- Carb.Pressure1     1   32.339 -2182.2
- Mnf.Flow           1   34.989 -2036.6

Step:  AIC=-2264.86
.outcome ~ Brand.CodeC + Brand.CodeD + Carb.Volume + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC.Fill + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
<none>                   30.927 -2264.9
- Carb.Rel           1   30.962 -2264.8
- PSC.Fill           1   30.967 -2264.4
- Carb.Volume        1   30.971 -2264.2
- Carb.Temp          1   30.994 -2262.8
- Hyd.Pressure1      1   30.994 -2262.8
- Brand.CodeD        1   30.997 -2262.7
- PC.Volume          1   30.998 -2262.6
- Fill.Ounces        1   31.009 -2261.9
- Filler.Level       1   31.016 -2261.5
- Hyd.Pressure2      1   31.035 -2260.4
- Filler.Speed       1   31.050 -2259.5
- Pressure.Setpoint  1   31.106 -2256.2
- Density            1   31.114 -2255.7
- Pressure.Vacuum    1   31.172 -2252.2
- Balling.Lvl        1   31.228 -2248.9
- Alch.Rel           1   31.256 -2247.3
- Hyd.Pressure3      1   31.287 -2245.4
- Bowl.Setpoint      1   31.322 -2243.4
- Balling            1   31.349 -2241.8
- Oxygen.Filler      1   31.389 -2239.4
- Temperature        1   31.434 -2236.8
- Usage.cont         1   31.585 -2227.9
- Carb.Pressure1     1   32.395 -2181.0
- Brand.CodeC        1   34.124 -2084.8
- Mnf.Flow           1   35.012 -2037.3
Start:  AIC=-2218.75
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + Carb.Temp + PSC + 
    PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Fill.Pressure + 
    Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Fill.Pressure      1   31.362 -2220.8
- Carb.Pressure      1   31.363 -2220.7
- Air.Pressurer      1   31.364 -2220.7
- Carb.Temp          1   31.365 -2220.6
- Hyd.Pressure4      1   31.371 -2220.3
- PSC.CO2            1   31.373 -2220.1
- MFR                1   31.374 -2220.1
- PSC.Fill           1   31.375 -2220.0
- Filler.Speed       1   31.377 -2219.9
- Hyd.Pressure1      1   31.381 -2219.6
- Carb.Volume        1   31.384 -2219.5
<none>                   31.362 -2218.8
- Carb.Rel           1   31.410 -2217.9
- PSC                1   31.422 -2217.2
- Fill.Ounces        1   31.440 -2216.2
- Carb.Flow          1   31.454 -2215.3
- Hyd.Pressure2      1   31.458 -2215.1
- Pressure.Setpoint  1   31.463 -2214.8
- PC.Volume          1   31.472 -2214.3
- Alch.Rel           1   31.479 -2213.9
- Brand.CodeC        1   31.480 -2213.8
- Filler.Level       1   31.490 -2213.2
- Brand.CodeB        1   31.506 -2212.3
- Pressure.Vacuum    1   31.577 -2208.2
- Density            1   31.581 -2207.9
- Brand.CodeD        1   31.583 -2207.8
- Oxygen.Filler      1   31.591 -2207.3
- Balling            1   31.653 -2203.7
- Hyd.Pressure3      1   31.734 -2199.0
- Temperature        1   31.859 -2191.7
- Balling.Lvl        1   31.879 -2190.5
- Bowl.Setpoint      1   31.965 -2185.6
- Usage.cont         1   32.096 -2178.0
- Carb.Pressure1     1   32.947 -2129.6
- Mnf.Flow           1   34.380 -2050.9

Step:  AIC=-2220.75
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + Carb.Temp + PSC + 
    PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    MFR + Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Air.Pressurer + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Carb.Pressure      1   31.363 -2222.7
- Air.Pressurer      1   31.364 -2222.7
- Carb.Temp          1   31.365 -2222.6
- Hyd.Pressure4      1   31.371 -2222.3
- PSC.CO2            1   31.373 -2222.1
- MFR                1   31.374 -2222.1
- PSC.Fill           1   31.375 -2222.0
- Filler.Speed       1   31.377 -2221.9
- Hyd.Pressure1      1   31.382 -2221.6
- Carb.Volume        1   31.384 -2221.5
<none>                   31.362 -2220.8
- Carb.Rel           1   31.410 -2219.9
- PSC                1   31.422 -2219.2
- Fill.Ounces        1   31.440 -2218.2
- Carb.Flow          1   31.455 -2217.3
- Hyd.Pressure2      1   31.458 -2217.1
- PC.Volume          1   31.472 -2216.3
- Alch.Rel           1   31.479 -2215.9
- Brand.CodeC        1   31.480 -2215.8
- Filler.Level       1   31.492 -2215.1
- Brand.CodeB        1   31.506 -2214.3
- Pressure.Setpoint  1   31.508 -2214.2
- Pressure.Vacuum    1   31.577 -2210.1
- Density            1   31.581 -2209.9
- Brand.CodeD        1   31.585 -2209.7
- Oxygen.Filler      1   31.591 -2209.3
- Balling            1   31.655 -2205.6
- Hyd.Pressure3      1   31.742 -2200.5
- Temperature        1   31.863 -2193.5
- Balling.Lvl        1   31.882 -2192.3
- Bowl.Setpoint      1   31.976 -2186.9
- Usage.cont         1   32.097 -2179.9
- Carb.Pressure1     1   32.952 -2131.3
- Mnf.Flow           1   34.382 -2052.8

Step:  AIC=-2222.74
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + MFR + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Air.Pressurer + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Air.Pressurer      1   31.364 -2224.7
- Hyd.Pressure4      1   31.371 -2224.3
- PSC.CO2            1   31.374 -2224.1
- MFR                1   31.374 -2224.1
- PSC.Fill           1   31.375 -2224.0
- Filler.Speed       1   31.377 -2223.9
- Hyd.Pressure1      1   31.382 -2223.6
- Carb.Volume        1   31.396 -2222.8
<none>                   31.363 -2222.7
- Carb.Temp          1   31.397 -2222.7
- Carb.Rel           1   31.410 -2221.9
- PSC                1   31.422 -2221.2
- Fill.Ounces        1   31.441 -2220.2
- Carb.Flow          1   31.455 -2219.3
- Hyd.Pressure2      1   31.458 -2219.1
- PC.Volume          1   31.473 -2218.3
- Alch.Rel           1   31.480 -2217.9
- Brand.CodeC        1   31.480 -2217.8
- Filler.Level       1   31.492 -2217.1
- Brand.CodeB        1   31.507 -2216.3
- Pressure.Setpoint  1   31.508 -2216.2
- Pressure.Vacuum    1   31.577 -2212.1
- Density            1   31.581 -2211.9
- Brand.CodeD        1   31.585 -2211.7
- Oxygen.Filler      1   31.592 -2211.3
- Balling            1   31.655 -2207.6
- Hyd.Pressure3      1   31.742 -2202.5
- Temperature        1   31.864 -2195.4
- Balling.Lvl        1   31.882 -2194.3
- Bowl.Setpoint      1   31.976 -2188.9
- Usage.cont         1   32.097 -2181.9
- Carb.Pressure1     1   32.953 -2133.3
- Mnf.Flow           1   34.385 -2054.6

Step:  AIC=-2224.68
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + MFR + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure4      1   31.372 -2226.2
- PSC.CO2            1   31.374 -2226.0
- MFR                1   31.375 -2226.0
- PSC.Fill           1   31.376 -2225.9
- Filler.Speed       1   31.378 -2225.8
- Hyd.Pressure1      1   31.383 -2225.5
- Carb.Temp          1   31.397 -2224.7
<none>                   31.364 -2224.7
- Carb.Volume        1   31.399 -2224.6
- Carb.Rel           1   31.413 -2223.8
- PSC                1   31.424 -2223.1
- Fill.Ounces        1   31.442 -2222.1
- Carb.Flow          1   31.455 -2221.3
- Hyd.Pressure2      1   31.459 -2221.1
- PC.Volume          1   31.474 -2220.2
- Alch.Rel           1   31.481 -2219.8
- Brand.CodeC        1   31.481 -2219.7
- Filler.Level       1   31.494 -2219.0
- Brand.CodeB        1   31.508 -2218.2
- Pressure.Setpoint  1   31.510 -2218.0
- Density            1   31.583 -2213.8
- Brand.CodeD        1   31.585 -2213.7
- Pressure.Vacuum    1   31.586 -2213.6
- Oxygen.Filler      1   31.598 -2212.9
- Balling            1   31.656 -2209.5
- Hyd.Pressure3      1   31.750 -2204.1
- Temperature        1   31.867 -2197.3
- Balling.Lvl        1   31.883 -2196.3
- Bowl.Setpoint      1   31.983 -2190.5
- Usage.cont         1   32.099 -2183.8
- Carb.Pressure1     1   32.954 -2135.2
- Mnf.Flow           1   34.386 -2056.6

Step:  AIC=-2226.2
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Filler.Level + Filler.Speed + Temperature + 
    Usage.cont + Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- MFR                1   31.381 -2227.7
- Filler.Speed       1   31.381 -2227.6
- PSC.CO2            1   31.382 -2227.6
- PSC.Fill           1   31.384 -2227.5
- Hyd.Pressure1      1   31.392 -2227.0
- Carb.Temp          1   31.405 -2226.2
<none>                   31.372 -2226.2
- Carb.Volume        1   31.406 -2226.2
- Carb.Rel           1   31.420 -2225.3
- PSC                1   31.432 -2224.6
- Fill.Ounces        1   31.452 -2223.5
- Carb.Flow          1   31.461 -2222.9
- Hyd.Pressure2      1   31.468 -2222.6
- PC.Volume          1   31.480 -2221.8
- Alch.Rel           1   31.487 -2221.4
- Brand.CodeC        1   31.497 -2220.8
- Filler.Level       1   31.499 -2220.7
- Brand.CodeB        1   31.510 -2220.1
- Pressure.Setpoint  1   31.518 -2219.6
- Brand.CodeD        1   31.588 -2215.5
- Density            1   31.597 -2215.0
- Pressure.Vacuum    1   31.603 -2214.6
- Oxygen.Filler      1   31.604 -2214.6
- Balling            1   31.679 -2210.2
- Hyd.Pressure3      1   31.759 -2205.5
- Temperature        1   31.873 -2198.9
- Balling.Lvl        1   31.907 -2196.9
- Bowl.Setpoint      1   31.984 -2192.4
- Usage.cont         1   32.105 -2185.5
- Carb.Pressure1     1   32.971 -2136.3
- Mnf.Flow           1   34.392 -2058.3

Step:  AIC=-2227.67
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Filler.Level + Filler.Speed + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- PSC.CO2            1   31.391 -2229.1
- PSC.Fill           1   31.393 -2228.9
- Hyd.Pressure1      1   31.398 -2228.6
- Filler.Speed       1   31.411 -2227.9
- Carb.Temp          1   31.414 -2227.7
<none>                   31.381 -2227.7
- Carb.Volume        1   31.416 -2227.6
- Carb.Rel           1   31.430 -2226.8
- PSC                1   31.442 -2226.1
- Fill.Ounces        1   31.460 -2225.0
- Carb.Flow          1   31.464 -2224.8
- Hyd.Pressure2      1   31.473 -2224.2
- PC.Volume          1   31.488 -2223.4
- Alch.Rel           1   31.492 -2223.1
- Filler.Level       1   31.507 -2222.3
- Brand.CodeC        1   31.509 -2222.1
- Brand.CodeB        1   31.514 -2221.8
- Pressure.Setpoint  1   31.529 -2221.0
- Brand.CodeD        1   31.593 -2217.2
- Density            1   31.603 -2216.6
- Pressure.Vacuum    1   31.604 -2216.6
- Oxygen.Filler      1   31.608 -2216.3
- Balling            1   31.681 -2212.1
- Hyd.Pressure3      1   31.767 -2207.0
- Temperature        1   31.886 -2200.2
- Balling.Lvl        1   31.908 -2198.8
- Bowl.Setpoint      1   31.993 -2193.9
- Usage.cont         1   32.134 -2185.8
- Carb.Pressure1     1   32.981 -2137.7
- Mnf.Flow           1   34.406 -2059.5

Step:  AIC=-2229.09
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- PSC.Fill           1   31.408 -2230.1
- Hyd.Pressure1      1   31.408 -2230.1
- Filler.Speed       1   31.420 -2229.3
- Carb.Temp          1   31.423 -2229.2
- Carb.Volume        1   31.424 -2229.1
<none>                   31.391 -2229.1
- Carb.Rel           1   31.440 -2228.2
- PSC                1   31.454 -2227.4
- Fill.Ounces        1   31.469 -2226.4
- Carb.Flow          1   31.473 -2226.2
- Hyd.Pressure2      1   31.481 -2225.8
- PC.Volume          1   31.494 -2225.0
- Alch.Rel           1   31.507 -2224.3
- Filler.Level       1   31.514 -2223.8
- Brand.CodeC        1   31.520 -2223.5
- Brand.CodeB        1   31.524 -2223.2
- Pressure.Setpoint  1   31.542 -2222.2
- Brand.CodeD        1   31.598 -2218.9
- Pressure.Vacuum    1   31.613 -2218.0
- Density            1   31.616 -2217.9
- Oxygen.Filler      1   31.620 -2217.6
- Balling            1   31.688 -2213.7
- Hyd.Pressure3      1   31.773 -2208.7
- Temperature        1   31.900 -2201.3
- Balling.Lvl        1   31.914 -2200.5
- Bowl.Setpoint      1   31.999 -2195.6
- Usage.cont         1   32.145 -2187.2
- Carb.Pressure1     1   32.991 -2139.2
- Mnf.Flow           1   34.420 -2060.7

Step:  AIC=-2230.06
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure1      1   31.424 -2231.1
- Filler.Speed       1   31.438 -2230.3
- Carb.Temp          1   31.440 -2230.2
- Carb.Volume        1   31.440 -2230.2
<none>                   31.408 -2230.1
- Carb.Rel           1   31.458 -2229.1
- Carb.Flow          1   31.487 -2227.4
- PSC                1   31.490 -2227.2
- Fill.Ounces        1   31.490 -2227.2
- Hyd.Pressure2      1   31.496 -2226.9
- PC.Volume          1   31.505 -2226.4
- Alch.Rel           1   31.525 -2225.2
- Filler.Level       1   31.532 -2224.8
- Brand.CodeC        1   31.539 -2224.4
- Brand.CodeB        1   31.541 -2224.2
- Pressure.Setpoint  1   31.560 -2223.1
- Brand.CodeD        1   31.616 -2219.8
- Pressure.Vacuum    1   31.626 -2219.3
- Density            1   31.633 -2218.9
- Oxygen.Filler      1   31.634 -2218.8
- Balling            1   31.706 -2214.6
- Hyd.Pressure3      1   31.791 -2209.6
- Temperature        1   31.922 -2202.1
- Balling.Lvl        1   31.929 -2201.6
- Bowl.Setpoint      1   32.011 -2196.9
- Usage.cont         1   32.158 -2188.4
- Carb.Pressure1     1   33.010 -2140.1
- Mnf.Flow           1   34.439 -2061.7

Step:  AIC=-2231.1
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Filler.Speed       1   31.449 -2231.7
- Carb.Temp          1   31.455 -2231.3
<none>                   31.424 -2231.1
- Carb.Volume        1   31.459 -2231.1
- Carb.Rel           1   31.477 -2230.0
- Hyd.Pressure2      1   31.496 -2228.9
- Fill.Ounces        1   31.505 -2228.3
- Carb.Flow          1   31.507 -2228.3
- PC.Volume          1   31.508 -2228.2
- PSC                1   31.509 -2228.1
- Alch.Rel           1   31.545 -2226.0
- Filler.Level       1   31.545 -2226.0
- Brand.CodeC        1   31.555 -2225.4
- Brand.CodeB        1   31.556 -2225.4
- Pressure.Setpoint  1   31.573 -2224.4
- Pressure.Vacuum    1   31.628 -2221.2
- Brand.CodeD        1   31.629 -2221.1
- Density            1   31.652 -2219.8
- Oxygen.Filler      1   31.655 -2219.6
- Balling            1   31.724 -2215.5
- Hyd.Pressure3      1   31.814 -2210.3
- Temperature        1   31.938 -2203.1
- Balling.Lvl        1   31.946 -2202.7
- Bowl.Setpoint      1   32.046 -2196.9
- Usage.cont         1   32.183 -2189.0
- Carb.Pressure1     1   33.011 -2142.0
- Mnf.Flow           1   34.452 -2063.0

Step:  AIC=-2231.68
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Temp          1   31.480 -2231.8
- Carb.Volume        1   31.482 -2231.7
<none>                   31.449 -2231.7
- Carb.Rel           1   31.502 -2230.6
- Hyd.Pressure2      1   31.512 -2230.0
- Fill.Ounces        1   31.525 -2229.2
- PSC                1   31.529 -2229.0
- PC.Volume          1   31.544 -2228.1
- Alch.Rel           1   31.553 -2227.5
- Brand.CodeC        1   31.562 -2227.0
- Filler.Level       1   31.582 -2225.9
- Brand.CodeB        1   31.605 -2224.5
- Pressure.Setpoint  1   31.612 -2224.1
- Carb.Flow          1   31.626 -2223.3
- Pressure.Vacuum    1   31.628 -2223.1
- Brand.CodeD        1   31.655 -2221.6
- Density            1   31.677 -2220.3
- Oxygen.Filler      1   31.679 -2220.2
- Balling            1   31.729 -2217.3
- Hyd.Pressure3      1   31.850 -2210.2
- Balling.Lvl        1   31.949 -2204.5
- Temperature        1   32.035 -2199.5
- Bowl.Setpoint      1   32.136 -2193.7
- Usage.cont         1   32.188 -2190.7
- Carb.Pressure1     1   33.012 -2144.0
- Mnf.Flow           1   34.461 -2064.5

Step:  AIC=-2231.83
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + PSC + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
<none>                   31.480 -2231.8
- Carb.Volume        1   31.532 -2230.8
- Carb.Rel           1   31.539 -2230.3
- Hyd.Pressure2      1   31.547 -2229.9
- Fill.Ounces        1   31.550 -2229.7
- PSC                1   31.563 -2229.0
- PC.Volume          1   31.577 -2228.1
- Alch.Rel           1   31.579 -2228.0
- Brand.CodeC        1   31.601 -2226.7
- Filler.Level       1   31.612 -2226.1
- Brand.CodeB        1   31.630 -2225.0
- Pressure.Setpoint  1   31.646 -2224.1
- Pressure.Vacuum    1   31.658 -2223.4
- Carb.Flow          1   31.661 -2223.2
- Brand.CodeD        1   31.701 -2220.9
- Density            1   31.701 -2220.9
- Oxygen.Filler      1   31.712 -2220.3
- Balling            1   31.757 -2217.6
- Hyd.Pressure3      1   31.887 -2210.1
- Balling.Lvl        1   31.972 -2205.2
- Temperature        1   32.062 -2199.9
- Bowl.Setpoint      1   32.160 -2194.3
- Usage.cont         1   32.220 -2190.9
- Carb.Pressure1     1   33.046 -2144.1
- Mnf.Flow           1   34.480 -2065.5
Start:  AIC=-2220.18
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + Carb.Temp + PSC + 
    PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Fill.Pressure + 
    Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Fill.Pressure      1   31.376 -2222.2
- Carb.Temp          1   31.377 -2222.1
- Carb.Pressure      1   31.377 -2222.1
- Air.Pressurer      1   31.379 -2222.0
- Hyd.Pressure4      1   31.381 -2221.9
- MFR                1   31.384 -2221.7
- Hyd.Pressure1      1   31.384 -2221.7
- Filler.Speed       1   31.387 -2221.5
- PSC.Fill           1   31.403 -2220.6
- Carb.Volume        1   31.404 -2220.6
- PSC                1   31.408 -2220.3
<none>                   31.376 -2220.2
- PSC.CO2            1   31.412 -2220.1
- Carb.Flow          1   31.412 -2220.1
- Carb.Rel           1   31.420 -2219.6
- Brand.CodeB        1   31.421 -2219.5
- Fill.Ounces        1   31.433 -2218.8
- PC.Volume          1   31.434 -2218.8
- Hyd.Pressure2      1   31.448 -2217.9
- Pressure.Setpoint  1   31.491 -2215.4
- Brand.CodeD        1   31.515 -2214.0
- Filler.Level       1   31.517 -2213.9
- Alch.Rel           1   31.521 -2213.6
- Pressure.Vacuum    1   31.546 -2212.2
- Density            1   31.568 -2210.9
- Brand.CodeC        1   31.603 -2208.8
- Oxygen.Filler      1   31.650 -2206.1
- Balling            1   31.653 -2205.9
- Hyd.Pressure3      1   31.745 -2200.6
- Balling.Lvl        1   31.773 -2198.9
- Bowl.Setpoint      1   31.920 -2190.4
- Usage.cont         1   32.030 -2184.0
- Temperature        1   32.046 -2183.1
- Carb.Pressure1     1   33.028 -2127.3
- Mnf.Flow           1   34.787 -2031.3

Step:  AIC=-2222.16
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + Carb.Temp + PSC + 
    PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    MFR + Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Air.Pressurer + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Carb.Temp          1   31.377 -2224.1
- Carb.Pressure      1   31.377 -2224.1
- Air.Pressurer      1   31.379 -2224.0
- Hyd.Pressure4      1   31.382 -2223.9
- MFR                1   31.384 -2223.7
- Hyd.Pressure1      1   31.385 -2223.7
- Filler.Speed       1   31.387 -2223.5
- PSC.Fill           1   31.403 -2222.6
- Carb.Volume        1   31.404 -2222.6
- PSC                1   31.408 -2222.3
<none>                   31.376 -2222.2
- PSC.CO2            1   31.412 -2222.1
- Carb.Flow          1   31.413 -2222.0
- Carb.Rel           1   31.420 -2221.6
- Brand.CodeB        1   31.421 -2221.5
- Fill.Ounces        1   31.433 -2220.8
- PC.Volume          1   31.435 -2220.7
- Hyd.Pressure2      1   31.449 -2219.9
- Brand.CodeD        1   31.516 -2216.0
- Filler.Level       1   31.520 -2215.7
- Alch.Rel           1   31.523 -2215.5
- Pressure.Setpoint  1   31.529 -2215.2
- Pressure.Vacuum    1   31.547 -2214.1
- Density            1   31.568 -2212.9
- Brand.CodeC        1   31.604 -2210.8
- Oxygen.Filler      1   31.650 -2208.1
- Balling            1   31.657 -2207.7
- Hyd.Pressure3      1   31.760 -2201.7
- Balling.Lvl        1   31.777 -2200.7
- Bowl.Setpoint      1   31.931 -2191.8
- Usage.cont         1   32.031 -2186.0
- Temperature        1   32.057 -2184.4
- Carb.Pressure1     1   33.031 -2129.1
- Mnf.Flow           1   34.787 -2033.3

Step:  AIC=-2224.13
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + PSC + PSC.Fill + 
    PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + MFR + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Air.Pressurer + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Air.Pressurer      1   31.380 -2226.0
- Hyd.Pressure4      1   31.382 -2225.8
- MFR                1   31.385 -2225.7
- Hyd.Pressure1      1   31.385 -2225.7
- Filler.Speed       1   31.388 -2225.5
- Carb.Pressure      1   31.399 -2224.9
- PSC.Fill           1   31.403 -2224.6
- PSC                1   31.409 -2224.3
<none>                   31.377 -2224.1
- PSC.CO2            1   31.412 -2224.0
- Carb.Flow          1   31.414 -2224.0
- Carb.Rel           1   31.420 -2223.6
- Brand.CodeB        1   31.422 -2223.5
- Fill.Ounces        1   31.434 -2222.8
- Carb.Volume        1   31.434 -2222.8
- PC.Volume          1   31.435 -2222.7
- Hyd.Pressure2      1   31.450 -2221.8
- Brand.CodeD        1   31.517 -2217.9
- Filler.Level       1   31.522 -2217.6
- Alch.Rel           1   31.523 -2217.5
- Pressure.Setpoint  1   31.530 -2217.1
- Pressure.Vacuum    1   31.549 -2216.0
- Density            1   31.568 -2214.9
- Brand.CodeC        1   31.604 -2212.8
- Oxygen.Filler      1   31.650 -2210.1
- Balling            1   31.658 -2209.7
- Hyd.Pressure3      1   31.760 -2203.7
- Balling.Lvl        1   31.778 -2202.7
- Bowl.Setpoint      1   31.933 -2193.6
- Usage.cont         1   32.032 -2187.9
- Temperature        1   32.057 -2186.4
- Carb.Pressure1     1   33.039 -2130.7
- Mnf.Flow           1   34.787 -2035.3

Step:  AIC=-2225.96
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + PSC + PSC.Fill + 
    PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + MFR + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure4      1   31.385 -2227.7
- MFR                1   31.388 -2227.5
- Hyd.Pressure1      1   31.389 -2227.4
- Filler.Speed       1   31.391 -2227.3
- Carb.Pressure      1   31.401 -2226.7
- PSC.Fill           1   31.406 -2226.4
- PSC                1   31.413 -2226.0
<none>                   31.380 -2226.0
- PSC.CO2            1   31.415 -2225.9
- Carb.Flow          1   31.416 -2225.8
- Brand.CodeB        1   31.424 -2225.3
- Carb.Rel           1   31.425 -2225.3
- Fill.Ounces        1   31.437 -2224.6
- PC.Volume          1   31.438 -2224.5
- Carb.Volume        1   31.440 -2224.4
- Hyd.Pressure2      1   31.450 -2223.8
- Brand.CodeD        1   31.520 -2219.7
- Filler.Level       1   31.526 -2219.3
- Alch.Rel           1   31.526 -2219.3
- Pressure.Setpoint  1   31.536 -2218.8
- Pressure.Vacuum    1   31.560 -2217.4
- Density            1   31.572 -2216.7
- Brand.CodeC        1   31.608 -2214.6
- Balling            1   31.659 -2211.6
- Oxygen.Filler      1   31.661 -2211.5
- Hyd.Pressure3      1   31.763 -2205.5
- Balling.Lvl        1   31.779 -2204.6
- Bowl.Setpoint      1   31.947 -2194.8
- Usage.cont         1   32.032 -2189.9
- Temperature        1   32.061 -2188.2
- Carb.Pressure1     1   33.039 -2132.6
- Mnf.Flow           1   34.788 -2037.2

Step:  AIC=-2227.66
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + PSC + PSC.Fill + 
    PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Filler.Level + Filler.Speed + Temperature + 
    Usage.cont + Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- MFR                1   31.391 -2229.3
- Filler.Speed       1   31.393 -2229.2
- Hyd.Pressure1      1   31.394 -2229.1
- Carb.Pressure      1   31.406 -2228.4
- PSC.Fill           1   31.411 -2228.1
- PSC                1   31.417 -2227.8
<none>                   31.385 -2227.7
- PSC.CO2            1   31.420 -2227.6
- Carb.Flow          1   31.420 -2227.6
- Brand.CodeB        1   31.426 -2227.2
- Carb.Rel           1   31.430 -2227.0
- PC.Volume          1   31.443 -2226.3
- Fill.Ounces        1   31.444 -2226.2
- Carb.Volume        1   31.445 -2226.1
- Hyd.Pressure2      1   31.456 -2225.5
- Brand.CodeD        1   31.523 -2221.6
- Filler.Level       1   31.528 -2221.2
- Alch.Rel           1   31.531 -2221.1
- Pressure.Setpoint  1   31.541 -2220.5
- Pressure.Vacuum    1   31.571 -2218.7
- Density            1   31.580 -2218.2
- Brand.CodeC        1   31.622 -2215.8
- Oxygen.Filler      1   31.665 -2213.2
- Balling            1   31.679 -2212.4
- Hyd.Pressure3      1   31.770 -2207.1
- Balling.Lvl        1   31.798 -2205.5
- Bowl.Setpoint      1   31.947 -2196.8
- Usage.cont         1   32.036 -2191.7
- Temperature        1   32.065 -2190.0
- Carb.Pressure1     1   33.048 -2134.1
- Mnf.Flow           1   34.791 -2039.1

Step:  AIC=-2229.3
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + PSC + PSC.Fill + 
    PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Filler.Level + Filler.Speed + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure1      1   31.399 -2230.8
- Carb.Pressure      1   31.412 -2230.1
- Filler.Speed       1   31.416 -2229.8
- PSC.Fill           1   31.418 -2229.7
- Carb.Flow          1   31.423 -2229.4
- PSC                1   31.423 -2229.4
- PSC.CO2            1   31.425 -2229.3
<none>                   31.391 -2229.3
- Brand.CodeB        1   31.431 -2229.0
- Carb.Rel           1   31.437 -2228.6
- PC.Volume          1   31.449 -2227.9
- Fill.Ounces        1   31.449 -2227.9
- Carb.Volume        1   31.452 -2227.7
- Hyd.Pressure2      1   31.460 -2227.2
- Brand.CodeD        1   31.527 -2223.3
- Filler.Level       1   31.532 -2223.0
- Alch.Rel           1   31.534 -2222.9
- Pressure.Setpoint  1   31.548 -2222.1
- Pressure.Vacuum    1   31.572 -2220.7
- Density            1   31.586 -2219.9
- Brand.CodeC        1   31.631 -2217.2
- Oxygen.Filler      1   31.667 -2215.1
- Balling            1   31.680 -2214.4
- Hyd.Pressure3      1   31.774 -2208.8
- Balling.Lvl        1   31.798 -2207.5
- Bowl.Setpoint      1   31.949 -2198.7
- Usage.cont         1   32.057 -2192.5
- Temperature        1   32.074 -2191.5
- Carb.Pressure1     1   33.056 -2135.7
- Mnf.Flow           1   34.801 -2040.5

Step:  AIC=-2230.82
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + PSC + PSC.Fill + 
    PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Carb.Pressure      1   31.419 -2231.7
- Filler.Speed       1   31.420 -2231.6
- PSC.Fill           1   31.425 -2231.3
- PSC.CO2            1   31.433 -2230.8
- Carb.Flow          1   31.433 -2230.8
- PSC                1   31.433 -2230.8
<none>                   31.399 -2230.8
- Brand.CodeB        1   31.437 -2230.6
- Carb.Rel           1   31.447 -2230.0
- PC.Volume          1   31.450 -2229.8
- Fill.Ounces        1   31.456 -2229.5
- Hyd.Pressure2      1   31.461 -2229.2
- Carb.Volume        1   31.462 -2229.1
- Brand.CodeD        1   31.533 -2224.9
- Filler.Level       1   31.537 -2224.7
- Alch.Rel           1   31.545 -2224.2
- Pressure.Setpoint  1   31.553 -2223.8
- Pressure.Vacuum    1   31.572 -2222.7
- Density            1   31.595 -2221.3
- Brand.CodeC        1   31.641 -2218.6
- Oxygen.Filler      1   31.680 -2216.4
- Balling            1   31.690 -2215.8
- Hyd.Pressure3      1   31.790 -2209.9
- Balling.Lvl        1   31.806 -2209.0
- Bowl.Setpoint      1   31.968 -2199.6
- Usage.cont         1   32.071 -2193.6
- Temperature        1   32.082 -2193.0
- Carb.Pressure1     1   33.060 -2137.5
- Mnf.Flow           1   34.810 -2042.0

Step:  AIC=-2231.65
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + PSC + PSC.Fill + PSC.CO2 + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Filler.Speed       1   31.441 -2232.4
- PSC.Fill           1   31.445 -2232.1
- PSC.CO2            1   31.452 -2231.7
- Carb.Flow          1   31.453 -2231.7
<none>                   31.419 -2231.7
- PSC                1   31.454 -2231.6
- Brand.CodeB        1   31.455 -2231.6
- PC.Volume          1   31.470 -2230.7
- Fill.Ounces        1   31.471 -2230.6
- Carb.Rel           1   31.474 -2230.4
- Carb.Volume        1   31.479 -2230.1
- Hyd.Pressure2      1   31.483 -2229.9
- Filler.Level       1   31.555 -2225.7
- Brand.CodeD        1   31.561 -2225.3
- Alch.Rel           1   31.563 -2225.2
- Pressure.Setpoint  1   31.573 -2224.6
- Pressure.Vacuum    1   31.593 -2223.4
- Density            1   31.611 -2222.4
- Brand.CodeC        1   31.670 -2218.9
- Oxygen.Filler      1   31.702 -2217.1
- Balling            1   31.709 -2216.6
- Hyd.Pressure3      1   31.811 -2210.7
- Balling.Lvl        1   31.822 -2210.1
- Bowl.Setpoint      1   31.981 -2200.9
- Usage.cont         1   32.090 -2194.6
- Temperature        1   32.100 -2194.0
- Carb.Pressure1     1   33.071 -2138.8
- Mnf.Flow           1   34.823 -2043.3

Step:  AIC=-2232.37
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + PSC + PSC.Fill + PSC.CO2 + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- PSC.Fill           1   31.467 -2232.8
- PSC                1   31.473 -2232.5
- PSC.CO2            1   31.473 -2232.5
<none>                   31.441 -2232.4
- Fill.Ounces        1   31.489 -2231.5
- Brand.CodeB        1   31.491 -2231.4
- Carb.Rel           1   31.495 -2231.2
- Hyd.Pressure2      1   31.497 -2231.1
- PC.Volume          1   31.499 -2231.0
- Carb.Volume        1   31.500 -2230.9
- Carb.Flow          1   31.529 -2229.2
- Alch.Rel           1   31.569 -2226.8
- Brand.CodeD        1   31.586 -2225.9
- Filler.Level       1   31.592 -2225.5
- Pressure.Vacuum    1   31.593 -2225.4
- Pressure.Setpoint  1   31.610 -2224.4
- Density            1   31.635 -2223.0
- Brand.CodeC        1   31.671 -2220.9
- Balling            1   31.713 -2218.4
- Oxygen.Filler      1   31.724 -2217.8
- Balling.Lvl        1   31.822 -2212.1
- Hyd.Pressure3      1   31.845 -2210.7
- Bowl.Setpoint      1   32.070 -2197.7
- Usage.cont         1   32.093 -2196.4
- Temperature        1   32.205 -2189.9
- Carb.Pressure1     1   33.073 -2140.7
- Mnf.Flow           1   34.841 -2044.4

Step:  AIC=-2232.84
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + PSC + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
<none>                   31.467 -2232.8
- PSC.CO2            1   31.512 -2232.2
- PSC                1   31.512 -2232.2
- Brand.CodeB        1   31.517 -2231.9
- Fill.Ounces        1   31.519 -2231.8
- PC.Volume          1   31.519 -2231.8
- Hyd.Pressure2      1   31.522 -2231.6
- Carb.Rel           1   31.522 -2231.6
- Carb.Volume        1   31.524 -2231.5
- Carb.Flow          1   31.552 -2229.8
- Alch.Rel           1   31.594 -2227.3
- Pressure.Vacuum    1   31.615 -2226.2
- Brand.CodeD        1   31.615 -2226.2
- Filler.Level       1   31.620 -2225.9
- Pressure.Setpoint  1   31.639 -2224.8
- Density            1   31.661 -2223.4
- Brand.CodeC        1   31.698 -2221.3
- Balling            1   31.737 -2219.1
- Oxygen.Filler      1   31.744 -2218.6
- Balling.Lvl        1   31.843 -2212.8
- Hyd.Pressure3      1   31.871 -2211.2
- Bowl.Setpoint      1   32.092 -2198.4
- Usage.cont         1   32.114 -2197.2
- Temperature        1   32.234 -2190.3
- Carb.Pressure1     1   33.103 -2141.1
- Mnf.Flow           1   34.866 -2045.1
Start:  AIC=-2229.96
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + Carb.Temp + PSC + 
    PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Fill.Pressure + 
    Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Pressure      1   31.173 -2232.0
- MFR                1   31.174 -2231.9
- Hyd.Pressure1      1   31.174 -2231.9
- Carb.Temp          1   31.177 -2231.7
- Hyd.Pressure4      1   31.178 -2231.6
- Fill.Pressure      1   31.186 -2231.2
- Brand.CodeB        1   31.186 -2231.2
- Air.Pressurer      1   31.189 -2231.0
- PC.Volume          1   31.198 -2230.5
- PSC.CO2            1   31.199 -2230.4
- Carb.Volume        1   31.200 -2230.4
- PSC                1   31.205 -2230.1
<none>                   31.173 -2230.0
- Filler.Speed       1   31.207 -2229.9
- PSC.Fill           1   31.213 -2229.6
- Filler.Level       1   31.221 -2229.1
- Fill.Ounces        1   31.234 -2228.4
- Hyd.Pressure2      1   31.238 -2228.1
- Carb.Flow          1   31.243 -2227.8
- Carb.Rel           1   31.267 -2226.4
- Brand.CodeD        1   31.276 -2225.8
- Pressure.Vacuum    1   31.281 -2225.6
- Pressure.Setpoint  1   31.302 -2224.3
- Alch.Rel           1   31.358 -2221.0
- Balling            1   31.388 -2219.2
- Density            1   31.389 -2219.2
- Balling.Lvl        1   31.390 -2219.1
- Oxygen.Filler      1   31.460 -2215.0
- Brand.CodeC        1   31.506 -2212.3
- Hyd.Pressure3      1   31.531 -2210.8
- Bowl.Setpoint      1   31.576 -2208.2
- Usage.cont         1   31.753 -2197.9
- Temperature        1   31.830 -2193.4
- Carb.Pressure1     1   32.668 -2145.3
- Mnf.Flow           1   34.218 -2059.7

Step:  AIC=-2231.96
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    MFR + Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Air.Pressurer + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- MFR                1   31.174 -2233.9
- Hyd.Pressure1      1   31.174 -2233.9
- Hyd.Pressure4      1   31.178 -2233.6
- Fill.Pressure      1   31.186 -2233.2
- Brand.CodeB        1   31.186 -2233.2
- Air.Pressurer      1   31.189 -2233.0
- PC.Volume          1   31.198 -2232.5
- PSC.CO2            1   31.199 -2232.4
- Carb.Temp          1   31.204 -2232.1
- PSC                1   31.205 -2232.1
<none>                   31.173 -2232.0
- Filler.Speed       1   31.207 -2231.9
- PSC.Fill           1   31.213 -2231.6
- Carb.Volume        1   31.220 -2231.2
- Filler.Level       1   31.221 -2231.1
- Fill.Ounces        1   31.234 -2230.3
- Hyd.Pressure2      1   31.238 -2230.1
- Carb.Flow          1   31.243 -2229.8
- Carb.Rel           1   31.267 -2228.4
- Brand.CodeD        1   31.276 -2227.8
- Pressure.Vacuum    1   31.281 -2227.6
- Pressure.Setpoint  1   31.302 -2226.3
- Alch.Rel           1   31.358 -2223.0
- Balling            1   31.388 -2221.2
- Density            1   31.389 -2221.2
- Balling.Lvl        1   31.390 -2221.1
- Oxygen.Filler      1   31.460 -2217.0
- Brand.CodeC        1   31.506 -2214.3
- Hyd.Pressure3      1   31.531 -2212.8
- Bowl.Setpoint      1   31.578 -2210.1
- Usage.cont         1   31.754 -2199.8
- Temperature        1   31.830 -2195.4
- Carb.Pressure1     1   32.674 -2147.0
- Mnf.Flow           1   34.218 -2061.6

Step:  AIC=-2233.88
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Air.Pressurer + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure1      1   31.176 -2235.8
- Hyd.Pressure4      1   31.180 -2235.5
- Fill.Pressure      1   31.188 -2235.1
- Brand.CodeB        1   31.188 -2235.1
- Air.Pressurer      1   31.190 -2234.9
- PC.Volume          1   31.199 -2234.4
- PSC.CO2            1   31.201 -2234.3
- Carb.Temp          1   31.205 -2234.1
- PSC                1   31.206 -2234.0
<none>                   31.174 -2233.9
- Filler.Speed       1   31.211 -2233.7
- PSC.Fill           1   31.214 -2233.5
- Carb.Volume        1   31.221 -2233.1
- Filler.Level       1   31.224 -2232.9
- Fill.Ounces        1   31.235 -2232.3
- Hyd.Pressure2      1   31.240 -2232.0
- Carb.Flow          1   31.248 -2231.5
- Carb.Rel           1   31.269 -2230.3
- Brand.CodeD        1   31.281 -2229.5
- Pressure.Vacuum    1   31.286 -2229.3
- Pressure.Setpoint  1   31.303 -2228.2
- Alch.Rel           1   31.361 -2224.8
- Balling            1   31.392 -2223.0
- Density            1   31.392 -2223.0
- Balling.Lvl        1   31.395 -2222.8
- Oxygen.Filler      1   31.466 -2218.7
- Brand.CodeC        1   31.506 -2216.3
- Hyd.Pressure3      1   31.532 -2214.8
- Bowl.Setpoint      1   31.583 -2211.8
- Usage.cont         1   31.756 -2201.7
- Temperature        1   31.831 -2197.3
- Carb.Pressure1     1   32.675 -2149.0
- Mnf.Flow           1   34.219 -2063.6

Step:  AIC=-2235.78
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Air.Pressurer + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure4      1   31.182 -2237.4
- Fill.Pressure      1   31.189 -2237.0
- Brand.CodeB        1   31.189 -2237.0
- Air.Pressurer      1   31.193 -2236.8
- PC.Volume          1   31.199 -2236.4
- PSC.CO2            1   31.203 -2236.2
- Carb.Temp          1   31.206 -2236.0
- PSC                1   31.208 -2235.8
<none>                   31.176 -2235.8
- Filler.Speed       1   31.212 -2235.7
- PSC.Fill           1   31.216 -2235.4
- Carb.Volume        1   31.224 -2234.9
- Filler.Level       1   31.225 -2234.8
- Fill.Ounces        1   31.236 -2234.2
- Hyd.Pressure2      1   31.245 -2233.7
- Carb.Flow          1   31.252 -2233.3
- Carb.Rel           1   31.271 -2232.1
- Brand.CodeD        1   31.282 -2231.5
- Pressure.Vacuum    1   31.286 -2231.2
- Pressure.Setpoint  1   31.304 -2230.2
- Alch.Rel           1   31.365 -2226.6
- Density            1   31.394 -2224.9
- Balling            1   31.395 -2224.8
- Balling.Lvl        1   31.397 -2224.7
- Oxygen.Filler      1   31.470 -2220.4
- Brand.CodeC        1   31.510 -2218.1
- Hyd.Pressure3      1   31.540 -2216.3
- Bowl.Setpoint      1   31.593 -2213.2
- Usage.cont         1   31.759 -2203.5
- Temperature        1   31.834 -2199.2
- Carb.Pressure1     1   32.687 -2150.2
- Mnf.Flow           1   34.221 -2065.5

Step:  AIC=-2237.39
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure2 + 
    Hyd.Pressure3 + Filler.Level + Filler.Speed + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Brand.CodeB        1   31.194 -2238.7
- Fill.Pressure      1   31.195 -2238.7
- Air.Pressurer      1   31.199 -2238.4
- PC.Volume          1   31.205 -2238.1
- PSC.CO2            1   31.210 -2237.8
- Filler.Speed       1   31.212 -2237.7
- Carb.Temp          1   31.213 -2237.6
- PSC                1   31.215 -2237.5
<none>                   31.182 -2237.4
- PSC.Fill           1   31.222 -2237.0
- Carb.Volume        1   31.229 -2236.6
- Filler.Level       1   31.230 -2236.6
- Fill.Ounces        1   31.245 -2235.7
- Hyd.Pressure2      1   31.253 -2235.2
- Carb.Flow          1   31.257 -2235.0
- Carb.Rel           1   31.277 -2233.8
- Brand.CodeD        1   31.283 -2233.4
- Pressure.Vacuum    1   31.300 -2232.5
- Pressure.Setpoint  1   31.309 -2231.9
- Alch.Rel           1   31.373 -2228.2
- Density            1   31.404 -2226.3
- Balling.Lvl        1   31.414 -2225.7
- Balling            1   31.418 -2225.5
- Oxygen.Filler      1   31.476 -2222.1
- Brand.CodeC        1   31.530 -2218.9
- Hyd.Pressure3      1   31.550 -2217.7
- Bowl.Setpoint      1   31.593 -2215.2
- Usage.cont         1   31.762 -2205.4
- Temperature        1   31.838 -2200.9
- Carb.Pressure1     1   32.697 -2151.7
- Mnf.Flow           1   34.226 -2067.2

Step:  AIC=-2238.72
.outcome ~ Brand.CodeC + Brand.CodeD + Carb.Volume + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + Mnf.Flow + 
    Carb.Pressure1 + Fill.Pressure + Hyd.Pressure2 + Hyd.Pressure3 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Fill.Pressure      1   31.206 -2240.0
- Air.Pressurer      1   31.210 -2239.7
- PC.Volume          1   31.217 -2239.3
- PSC.CO2            1   31.221 -2239.1
- Carb.Temp          1   31.223 -2239.0
- PSC                1   31.224 -2238.9
<none>                   31.194 -2238.7
- Filler.Speed       1   31.233 -2238.4
- PSC.Fill           1   31.233 -2238.4
- Filler.Level       1   31.240 -2237.9
- Carb.Volume        1   31.253 -2237.2
- Fill.Ounces        1   31.253 -2237.2
- Carb.Flow          1   31.262 -2236.7
- Hyd.Pressure2      1   31.265 -2236.5
- Brand.CodeD        1   31.289 -2235.1
- Carb.Rel           1   31.300 -2234.5
- Pressure.Setpoint  1   31.320 -2233.3
- Pressure.Vacuum    1   31.321 -2233.2
- Alch.Rel           1   31.392 -2229.0
- Balling.Lvl        1   31.417 -2227.6
- Density            1   31.421 -2227.3
- Balling            1   31.455 -2225.3
- Oxygen.Filler      1   31.492 -2223.1
- Hyd.Pressure3      1   31.560 -2219.2
- Bowl.Setpoint      1   31.602 -2216.7
- Usage.cont         1   31.765 -2207.2
- Temperature        1   31.862 -2201.5
- Carb.Pressure1     1   32.725 -2152.1
- Mnf.Flow           1   34.264 -2067.1
- Brand.CodeC        1   34.441 -2057.6

Step:  AIC=-2240
.outcome ~ Brand.CodeC + Brand.CodeD + Carb.Volume + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Air.Pressurer + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Air.Pressurer      1   31.224 -2240.9
- PSC.CO2            1   31.233 -2240.4
- PC.Volume          1   31.234 -2240.3
- PSC                1   31.235 -2240.3
- Carb.Temp          1   31.236 -2240.2
<none>                   31.206 -2240.0
- PSC.Fill           1   31.245 -2239.7
- Filler.Speed       1   31.245 -2239.7
- Filler.Level       1   31.262 -2238.7
- Fill.Ounces        1   31.263 -2238.6
- Carb.Volume        1   31.264 -2238.6
- Carb.Flow          1   31.281 -2237.6
- Hyd.Pressure2      1   31.286 -2237.3
- Brand.CodeD        1   31.297 -2236.6
- Carb.Rel           1   31.308 -2235.9
- Pressure.Setpoint  1   31.329 -2234.7
- Pressure.Vacuum    1   31.338 -2234.2
- Alch.Rel           1   31.411 -2229.9
- Density            1   31.432 -2228.6
- Balling.Lvl        1   31.440 -2228.2
- Balling            1   31.479 -2225.9
- Oxygen.Filler      1   31.503 -2224.5
- Hyd.Pressure3      1   31.603 -2218.6
- Bowl.Setpoint      1   31.645 -2216.2
- Usage.cont         1   31.770 -2208.9
- Temperature        1   31.892 -2201.8
- Carb.Pressure1     1   32.725 -2154.1
- Mnf.Flow           1   34.269 -2068.9
- Brand.CodeC        1   34.454 -2058.9

Step:  AIC=-2240.94
.outcome ~ Brand.CodeC + Brand.CodeD + Carb.Volume + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- PSC.CO2            1   31.251 -2241.3
- PC.Volume          1   31.251 -2241.3
- Carb.Temp          1   31.251 -2241.3
- PSC                1   31.255 -2241.1
<none>                   31.224 -2240.9
- Filler.Speed       1   31.263 -2240.7
- PSC.Fill           1   31.263 -2240.7
- Filler.Level       1   31.282 -2239.5
- Fill.Ounces        1   31.282 -2239.5
- Carb.Volume        1   31.290 -2239.0
- Hyd.Pressure2      1   31.292 -2238.9
- Carb.Flow          1   31.298 -2238.6
- Brand.CodeD        1   31.315 -2237.6
- Carb.Rel           1   31.333 -2236.5
- Pressure.Setpoint  1   31.352 -2235.4
- Pressure.Vacuum    1   31.373 -2234.2
- Alch.Rel           1   31.432 -2230.7
- Density            1   31.452 -2229.5
- Balling.Lvl        1   31.456 -2229.2
- Balling            1   31.495 -2226.9
- Oxygen.Filler      1   31.539 -2224.4
- Hyd.Pressure3      1   31.604 -2220.6
- Bowl.Setpoint      1   31.680 -2216.1
- Usage.cont         1   31.774 -2210.7
- Temperature        1   31.916 -2202.4
- Carb.Pressure1     1   32.728 -2155.9
- Mnf.Flow           1   34.274 -2070.6
- Brand.CodeC        1   34.465 -2060.3

Step:  AIC=-2241.35
.outcome ~ Brand.CodeC + Brand.CodeD + Carb.Volume + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC + PSC.Fill + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- PC.Volume          1   31.275 -2241.9
- Carb.Temp          1   31.277 -2241.8
<none>                   31.251 -2241.3
- PSC                1   31.285 -2241.3
- Filler.Speed       1   31.288 -2241.1
- PSC.Fill           1   31.303 -2240.2
- Filler.Level       1   31.308 -2240.0
- Fill.Ounces        1   31.309 -2239.9
- Hyd.Pressure2      1   31.314 -2239.6
- Carb.Volume        1   31.315 -2239.5
- Carb.Flow          1   31.323 -2239.1
- Brand.CodeD        1   31.338 -2238.2
- Carb.Rel           1   31.361 -2236.8
- Pressure.Setpoint  1   31.383 -2235.5
- Pressure.Vacuum    1   31.399 -2234.6
- Alch.Rel           1   31.464 -2230.8
- Balling.Lvl        1   31.482 -2229.7
- Density            1   31.482 -2229.7
- Balling            1   31.521 -2227.4
- Oxygen.Filler      1   31.570 -2224.6
- Hyd.Pressure3      1   31.623 -2221.5
- Bowl.Setpoint      1   31.705 -2216.7
- Usage.cont         1   31.800 -2211.1
- Temperature        1   31.948 -2202.5
- Carb.Pressure1     1   32.750 -2156.7
- Mnf.Flow           1   34.306 -2070.9
- Brand.CodeC        1   34.498 -2060.6

Step:  AIC=-2241.88
.outcome ~ Brand.CodeC + Brand.CodeD + Carb.Volume + Fill.Ounces + 
    Carb.Temp + PSC + PSC.Fill + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Temp          1   31.301 -2242.4
<none>                   31.275 -2241.9
- Filler.Speed       1   31.322 -2241.1
- PSC.Fill           1   31.323 -2241.1
- Fill.Ounces        1   31.326 -2240.9
- PSC                1   31.330 -2240.7
- Carb.Flow          1   31.335 -2240.4
- Filler.Level       1   31.335 -2240.3
- Carb.Volume        1   31.337 -2240.3
- Hyd.Pressure2      1   31.341 -2240.0
- Brand.CodeD        1   31.365 -2238.6
- Carb.Rel           1   31.386 -2237.4
- Pressure.Vacuum    1   31.413 -2235.8
- Pressure.Setpoint  1   31.415 -2235.7
- Alch.Rel           1   31.493 -2231.1
- Density            1   31.512 -2230.0
- Balling.Lvl        1   31.512 -2229.9
- Balling            1   31.549 -2227.8
- Oxygen.Filler      1   31.610 -2224.2
- Hyd.Pressure3      1   31.638 -2222.6
- Bowl.Setpoint      1   31.714 -2218.2
- Usage.cont         1   31.804 -2212.9
- Temperature        1   32.002 -2201.4
- Carb.Pressure1     1   32.810 -2155.3
- Mnf.Flow           1   34.352 -2070.4
- Brand.CodeC        1   34.511 -2061.8

Step:  AIC=-2242.37
.outcome ~ Brand.CodeC + Brand.CodeD + Carb.Volume + Fill.Ounces + 
    PSC + PSC.Fill + Mnf.Flow + Carb.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Filler.Level + Filler.Speed + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
<none>                   31.301 -2242.4
- Fill.Ounces        1   31.347 -2241.7
- PSC.Fill           1   31.348 -2241.6
- Filler.Speed       1   31.349 -2241.5
- PSC                1   31.357 -2241.1
- Filler.Level       1   31.361 -2240.9
- Carb.Flow          1   31.362 -2240.8
- Hyd.Pressure2      1   31.370 -2240.3
- Carb.Volume        1   31.385 -2239.4
- Brand.CodeD        1   31.399 -2238.6
- Carb.Rel           1   31.419 -2237.4
- Pressure.Vacuum    1   31.439 -2236.3
- Pressure.Setpoint  1   31.441 -2236.1
- Alch.Rel           1   31.514 -2231.8
- Density            1   31.531 -2230.8
- Balling.Lvl        1   31.537 -2230.5
- Balling            1   31.573 -2228.4
- Oxygen.Filler      1   31.636 -2224.7
- Hyd.Pressure3      1   31.667 -2222.9
- Bowl.Setpoint      1   31.736 -2218.8
- Usage.cont         1   31.828 -2213.5
- Temperature        1   32.019 -2202.5
- Carb.Pressure1     1   32.835 -2155.9
- Mnf.Flow           1   34.365 -2071.7
- Brand.CodeC        1   34.565 -2061.0
Start:  AIC=-2221.36
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + Carb.Temp + PSC + 
    PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Fill.Pressure + 
    Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- MFR                1   31.318 -2223.4
- Carb.Pressure      1   31.319 -2223.3
- Carb.Temp          1   31.319 -2223.3
- Fill.Pressure      1   31.320 -2223.2
- Air.Pressurer      1   31.322 -2223.1
- Hyd.Pressure1      1   31.326 -2222.9
- Hyd.Pressure4      1   31.335 -2222.4
- PSC.CO2            1   31.335 -2222.3
- Filler.Speed       1   31.337 -2222.2
- Carb.Rel           1   31.337 -2222.2
- PSC                1   31.347 -2221.7
<none>                   31.318 -2221.4
- Carb.Volume        1   31.355 -2221.2
- Brand.CodeB        1   31.357 -2221.1
- PC.Volume          1   31.358 -2221.0
- PSC.Fill           1   31.386 -2219.4
- Hyd.Pressure2      1   31.394 -2218.9
- Alch.Rel           1   31.402 -2218.4
- Fill.Ounces        1   31.407 -2218.1
- Carb.Flow          1   31.409 -2218.0
- Filler.Level       1   31.421 -2217.3
- Pressure.Vacuum    1   31.426 -2217.0
- Pressure.Setpoint  1   31.512 -2211.9
- Balling            1   31.525 -2211.2
- Oxygen.Filler      1   31.532 -2210.8
- Brand.CodeC        1   31.551 -2209.7
- Density            1   31.570 -2208.6
- Brand.CodeD        1   31.581 -2207.9
- Hyd.Pressure3      1   31.671 -2202.6
- Balling.Lvl        1   31.698 -2201.1
- Bowl.Setpoint      1   31.808 -2194.6
- Temperature        1   31.905 -2189.0
- Usage.cont         1   31.954 -2186.2
- Carb.Pressure1     1   32.795 -2138.2
- Mnf.Flow           1   34.309 -2054.7

Step:  AIC=-2223.36
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + Carb.Temp + PSC + 
    PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Fill.Pressure + 
    Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Pressure      1   31.319 -2225.3
- Carb.Temp          1   31.319 -2225.3
- Fill.Pressure      1   31.320 -2225.2
- Air.Pressurer      1   31.322 -2225.1
- Hyd.Pressure1      1   31.326 -2224.9
- PSC.CO2            1   31.335 -2224.3
- Hyd.Pressure4      1   31.335 -2224.3
- Carb.Rel           1   31.337 -2224.2
- Filler.Speed       1   31.344 -2223.8
- PSC                1   31.347 -2223.7
<none>                   31.318 -2223.4
- Carb.Volume        1   31.355 -2223.2
- Brand.CodeB        1   31.357 -2223.1
- PC.Volume          1   31.358 -2223.0
- PSC.Fill           1   31.386 -2221.4
- Hyd.Pressure2      1   31.394 -2220.9
- Alch.Rel           1   31.402 -2220.4
- Fill.Ounces        1   31.407 -2220.1
- Carb.Flow          1   31.410 -2220.0
- Filler.Level       1   31.421 -2219.3
- Pressure.Vacuum    1   31.426 -2219.0
- Pressure.Setpoint  1   31.512 -2213.9
- Balling            1   31.525 -2213.2
- Oxygen.Filler      1   31.533 -2212.7
- Brand.CodeC        1   31.552 -2211.6
- Density            1   31.570 -2210.6
- Brand.CodeD        1   31.582 -2209.8
- Hyd.Pressure3      1   31.671 -2204.6
- Balling.Lvl        1   31.699 -2203.0
- Bowl.Setpoint      1   31.809 -2196.6
- Temperature        1   31.907 -2190.9
- Usage.cont         1   31.959 -2187.9
- Carb.Pressure1     1   32.795 -2140.2
- Mnf.Flow           1   34.309 -2056.7

Step:  AIC=-2225.33
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Air.Pressurer + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Fill.Pressure      1   31.321 -2227.2
- Air.Pressurer      1   31.322 -2227.1
- Hyd.Pressure1      1   31.326 -2226.9
- PSC.CO2            1   31.336 -2226.3
- Hyd.Pressure4      1   31.336 -2226.3
- Carb.Rel           1   31.338 -2226.2
- Carb.Temp          1   31.339 -2226.1
- Filler.Speed       1   31.345 -2225.8
- PSC                1   31.347 -2225.7
<none>                   31.319 -2225.3
- Brand.CodeB        1   31.357 -2225.0
- PC.Volume          1   31.358 -2225.0
- Carb.Volume        1   31.371 -2224.3
- PSC.Fill           1   31.387 -2223.3
- Hyd.Pressure2      1   31.395 -2222.9
- Alch.Rel           1   31.403 -2222.4
- Fill.Ounces        1   31.407 -2222.1
- Carb.Flow          1   31.410 -2221.9
- Filler.Level       1   31.421 -2221.3
- Pressure.Vacuum    1   31.427 -2221.0
- Pressure.Setpoint  1   31.512 -2215.9
- Balling            1   31.526 -2215.1
- Oxygen.Filler      1   31.534 -2214.7
- Brand.CodeC        1   31.553 -2213.6
- Density            1   31.570 -2212.5
- Brand.CodeD        1   31.583 -2211.8
- Hyd.Pressure3      1   31.673 -2206.5
- Balling.Lvl        1   31.699 -2205.0
- Bowl.Setpoint      1   31.809 -2198.6
- Temperature        1   31.910 -2192.8
- Usage.cont         1   31.959 -2189.9
- Carb.Pressure1     1   32.798 -2142.0
- Mnf.Flow           1   34.311 -2058.6

Step:  AIC=-2227.2
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Air.Pressurer + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Air.Pressurer      1   31.325 -2229.0
- Hyd.Pressure1      1   31.328 -2228.8
- Hyd.Pressure4      1   31.338 -2228.2
- PSC.CO2            1   31.338 -2228.2
- Carb.Rel           1   31.340 -2228.1
- Carb.Temp          1   31.341 -2228.0
- Filler.Speed       1   31.346 -2227.7
- PSC                1   31.349 -2227.6
<none>                   31.321 -2227.2
- Brand.CodeB        1   31.359 -2226.9
- PC.Volume          1   31.362 -2226.8
- Carb.Volume        1   31.372 -2226.2
- PSC.Fill           1   31.389 -2225.2
- Hyd.Pressure2      1   31.399 -2224.6
- Alch.Rel           1   31.406 -2224.2
- Fill.Ounces        1   31.409 -2224.0
- Carb.Flow          1   31.415 -2223.6
- Filler.Level       1   31.429 -2222.8
- Pressure.Vacuum    1   31.430 -2222.8
- Balling            1   31.533 -2216.7
- Oxygen.Filler      1   31.536 -2216.6
- Brand.CodeC        1   31.555 -2215.4
- Pressure.Setpoint  1   31.564 -2214.9
- Density            1   31.572 -2214.4
- Brand.CodeD        1   31.583 -2213.8
- Hyd.Pressure3      1   31.693 -2207.4
- Balling.Lvl        1   31.707 -2206.5
- Bowl.Setpoint      1   31.829 -2199.4
- Temperature        1   31.922 -2194.0
- Usage.cont         1   31.959 -2191.9
- Carb.Pressure1     1   32.799 -2144.0
- Mnf.Flow           1   34.311 -2060.6

Step:  AIC=-2228.97
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure1      1   31.333 -2230.5
- PSC.CO2            1   31.341 -2230.0
- Hyd.Pressure4      1   31.342 -2230.0
- Carb.Temp          1   31.345 -2229.8
- Carb.Rel           1   31.345 -2229.8
- Filler.Speed       1   31.350 -2229.5
- PSC                1   31.353 -2229.3
<none>                   31.325 -2229.0
- Brand.CodeB        1   31.363 -2228.7
- PC.Volume          1   31.367 -2228.5
- Carb.Volume        1   31.380 -2227.7
- PSC.Fill           1   31.392 -2227.0
- Hyd.Pressure2      1   31.399 -2226.6
- Alch.Rel           1   31.411 -2225.9
- Fill.Ounces        1   31.414 -2225.7
- Carb.Flow          1   31.418 -2225.5
- Filler.Level       1   31.435 -2224.4
- Pressure.Vacuum    1   31.442 -2224.0
- Balling            1   31.536 -2218.6
- Oxygen.Filler      1   31.548 -2217.8
- Brand.CodeC        1   31.559 -2217.2
- Pressure.Setpoint  1   31.573 -2216.4
- Density            1   31.578 -2216.1
- Brand.CodeD        1   31.586 -2215.6
- Hyd.Pressure3      1   31.695 -2209.2
- Balling.Lvl        1   31.711 -2208.3
- Bowl.Setpoint      1   31.844 -2200.6
- Temperature        1   31.927 -2195.7
- Usage.cont         1   31.959 -2193.9
- Carb.Pressure1     1   32.799 -2146.0
- Mnf.Flow           1   34.311 -2062.6

Step:  AIC=-2230.49
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Hyd.Pressure4 + Filler.Level + Filler.Speed + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure4      1   31.350 -2231.5
- PSC.CO2            1   31.350 -2231.5
- Carb.Temp          1   31.352 -2231.4
- Carb.Rel           1   31.354 -2231.2
- Filler.Speed       1   31.355 -2231.2
- PSC                1   31.363 -2230.7
<none>                   31.333 -2230.5
- PC.Volume          1   31.368 -2230.4
- Brand.CodeB        1   31.370 -2230.3
- Carb.Volume        1   31.391 -2229.1
- PSC.Fill           1   31.399 -2228.6
- Hyd.Pressure2      1   31.401 -2228.5
- Fill.Ounces        1   31.421 -2227.3
- Alch.Rel           1   31.422 -2227.2
- Carb.Flow          1   31.430 -2226.8
- Filler.Level       1   31.442 -2226.1
- Pressure.Vacuum    1   31.443 -2226.0
- Balling            1   31.545 -2220.0
- Oxygen.Filler      1   31.560 -2219.2
- Brand.CodeC        1   31.570 -2218.5
- Pressure.Setpoint  1   31.577 -2218.1
- Density            1   31.589 -2217.5
- Brand.CodeD        1   31.591 -2217.3
- Hyd.Pressure3      1   31.709 -2210.4
- Balling.Lvl        1   31.718 -2209.9
- Bowl.Setpoint      1   31.865 -2201.3
- Temperature        1   31.937 -2197.2
- Usage.cont         1   31.971 -2195.2
- Carb.Pressure1     1   32.801 -2147.8
- Mnf.Flow           1   34.317 -2064.3

Step:  AIC=-2231.49
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Filler.Speed       1   31.361 -2232.8
- PSC.CO2            1   31.367 -2232.5
- Carb.Temp          1   31.369 -2232.4
- Carb.Rel           1   31.371 -2232.2
- PSC                1   31.379 -2231.8
- Brand.CodeB        1   31.382 -2231.6
<none>                   31.350 -2231.5
- PC.Volume          1   31.384 -2231.5
- Carb.Volume        1   31.406 -2230.2
- PSC.Fill           1   31.417 -2229.6
- Hyd.Pressure2      1   31.420 -2229.4
- Alch.Rel           1   31.440 -2228.2
- Fill.Ounces        1   31.443 -2228.0
- Carb.Flow          1   31.444 -2227.9
- Filler.Level       1   31.453 -2227.4
- Pressure.Vacuum    1   31.470 -2226.4
- Oxygen.Filler      1   31.573 -2220.4
- Balling            1   31.583 -2219.8
- Pressure.Setpoint  1   31.591 -2219.3
- Brand.CodeD        1   31.592 -2219.2
- Brand.CodeC        1   31.598 -2218.9
- Density            1   31.613 -2218.0
- Hyd.Pressure3      1   31.731 -2211.1
- Balling.Lvl        1   31.758 -2209.6
- Bowl.Setpoint      1   31.870 -2203.0
- Temperature        1   31.949 -2198.5
- Usage.cont         1   31.981 -2196.6
- Carb.Pressure1     1   32.824 -2148.5
- Mnf.Flow           1   34.333 -2065.4

Step:  AIC=-2232.84
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Filler.Level + Temperature + Usage.cont + Carb.Flow + Density + 
    Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- PSC.CO2            1   31.378 -2233.8
- Carb.Temp          1   31.381 -2233.7
- Carb.Rel           1   31.382 -2233.6
- PSC                1   31.389 -2233.2
<none>                   31.361 -2232.8
- PC.Volume          1   31.400 -2232.5
- Brand.CodeB        1   31.403 -2232.4
- Carb.Volume        1   31.415 -2231.7
- Hyd.Pressure2      1   31.426 -2231.0
- PSC.Fill           1   31.428 -2230.9
- Alch.Rel           1   31.443 -2230.0
- Fill.Ounces        1   31.451 -2229.6
- Pressure.Vacuum    1   31.470 -2228.4
- Filler.Level       1   31.470 -2228.4
- Carb.Flow          1   31.538 -2224.4
- Oxygen.Filler      1   31.585 -2221.7
- Balling            1   31.588 -2221.5
- Brand.CodeC        1   31.598 -2220.9
- Brand.CodeD        1   31.605 -2220.5
- Pressure.Setpoint  1   31.619 -2219.7
- Density            1   31.625 -2219.3
- Hyd.Pressure3      1   31.754 -2211.8
- Balling.Lvl        1   31.760 -2211.5
- Bowl.Setpoint      1   31.922 -2202.1
- Usage.cont         1   31.982 -2198.6
- Temperature        1   32.023 -2196.2
- Carb.Pressure1     1   32.831 -2150.1
- Mnf.Flow           1   34.354 -2066.3

Step:  AIC=-2233.85
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Temp          1   31.396 -2234.8
- Carb.Rel           1   31.399 -2234.6
- PSC                1   31.407 -2234.1
<none>                   31.378 -2233.8
- PC.Volume          1   31.414 -2233.7
- Brand.CodeB        1   31.419 -2233.4
- Carb.Volume        1   31.431 -2232.7
- Hyd.Pressure2      1   31.439 -2232.2
- PSC.Fill           1   31.460 -2231.0
- Alch.Rel           1   31.465 -2230.7
- Fill.Ounces        1   31.466 -2230.6
- Filler.Level       1   31.485 -2229.5
- Pressure.Vacuum    1   31.486 -2229.5
- Carb.Flow          1   31.552 -2225.6
- Oxygen.Filler      1   31.603 -2222.6
- Balling            1   31.603 -2222.6
- Brand.CodeC        1   31.615 -2221.9
- Brand.CodeD        1   31.616 -2221.8
- Pressure.Setpoint  1   31.640 -2220.4
- Density            1   31.643 -2220.2
- Hyd.Pressure3      1   31.763 -2213.3
- Balling.Lvl        1   31.772 -2212.7
- Bowl.Setpoint      1   31.933 -2203.4
- Usage.cont         1   32.001 -2199.5
- Temperature        1   32.045 -2196.9
- Carb.Pressure1     1   32.845 -2151.3
- Mnf.Flow           1   34.370 -2067.4

Step:  AIC=-2234.76
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + PSC + PSC.Fill + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Rel           1   31.421 -2235.3
- PSC                1   31.427 -2235.0
<none>                   31.396 -2234.8
- PC.Volume          1   31.433 -2234.6
- Brand.CodeB        1   31.436 -2234.4
- Hyd.Pressure2      1   31.460 -2233.0
- Carb.Volume        1   31.470 -2232.4
- PSC.Fill           1   31.478 -2231.9
- Alch.Rel           1   31.480 -2231.8
- Fill.Ounces        1   31.480 -2231.8
- Filler.Level       1   31.503 -2230.5
- Pressure.Vacuum    1   31.506 -2230.3
- Carb.Flow          1   31.572 -2226.4
- Oxygen.Filler      1   31.621 -2223.5
- Balling            1   31.622 -2223.5
- Brand.CodeC        1   31.640 -2222.5
- Brand.CodeD        1   31.649 -2221.9
- Density            1   31.656 -2221.5
- Pressure.Setpoint  1   31.660 -2221.3
- Hyd.Pressure3      1   31.783 -2214.1
- Balling.Lvl        1   31.789 -2213.8
- Bowl.Setpoint      1   31.946 -2204.7
- Usage.cont         1   32.018 -2200.5
- Temperature        1   32.061 -2198.0
- Carb.Pressure1     1   32.859 -2152.6
- Mnf.Flow           1   34.382 -2068.8

Step:  AIC=-2235.29
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + PSC + PSC.Fill + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- PSC                1   31.453 -2235.4
<none>                   31.421 -2235.3
- PC.Volume          1   31.456 -2235.2
- Brand.CodeB        1   31.468 -2234.6
- Carb.Volume        1   31.473 -2234.2
- Hyd.Pressure2      1   31.480 -2233.8
- PSC.Fill           1   31.503 -2232.5
- Fill.Ounces        1   31.517 -2231.6
- Alch.Rel           1   31.521 -2231.4
- Filler.Level       1   31.522 -2231.4
- Pressure.Vacuum    1   31.532 -2230.8
- Carb.Flow          1   31.593 -2227.2
- Oxygen.Filler      1   31.646 -2224.1
- Brand.CodeC        1   31.655 -2223.6
- Density            1   31.665 -2223.0
- Balling            1   31.675 -2222.4
- Brand.CodeD        1   31.677 -2222.3
- Pressure.Setpoint  1   31.683 -2221.9
- Hyd.Pressure3      1   31.809 -2214.6
- Balling.Lvl        1   31.895 -2209.6
- Bowl.Setpoint      1   31.969 -2205.3
- Usage.cont         1   32.053 -2200.4
- Temperature        1   32.066 -2199.7
- Carb.Pressure1     1   32.908 -2151.8
- Mnf.Flow           1   34.433 -2068.0

Step:  AIC=-2235.4
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + PSC.Fill + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
<none>                   31.453 -2235.4
- Brand.CodeB        1   31.496 -2234.9
- Carb.Volume        1   31.509 -2234.1
- Hyd.Pressure2      1   31.512 -2233.9
- PC.Volume          1   31.514 -2233.9
- Filler.Level       1   31.551 -2231.7
- Alch.Rel           1   31.552 -2231.6
- Fill.Ounces        1   31.553 -2231.6
- PSC.Fill           1   31.562 -2231.0
- Pressure.Vacuum    1   31.580 -2230.0
- Carb.Flow          1   31.628 -2227.1
- Oxygen.Filler      1   31.682 -2224.0
- Density            1   31.693 -2223.4
- Brand.CodeC        1   31.698 -2223.1
- Brand.CodeD        1   31.709 -2222.4
- Pressure.Setpoint  1   31.715 -2222.1
- Balling            1   31.715 -2222.1
- Hyd.Pressure3      1   31.851 -2214.2
- Balling.Lvl        1   31.930 -2209.6
- Bowl.Setpoint      1   32.000 -2205.6
- Temperature        1   32.086 -2200.6
- Usage.cont         1   32.106 -2199.4
- Carb.Pressure1     1   32.956 -2151.1
- Mnf.Flow           1   34.585 -2061.9
Start:  AIC=-2257.62
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + Carb.Temp + PSC + 
    PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Fill.Pressure + 
    Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Pressure      1   30.748 -2259.6
- Air.Pressurer      1   30.749 -2259.6
- Carb.Temp          1   30.755 -2259.2
- Hyd.Pressure4      1   30.756 -2259.1
- PSC.Fill           1   30.756 -2259.1
- Carb.Volume        1   30.764 -2258.6
- Filler.Speed       1   30.765 -2258.6
- MFR                1   30.774 -2258.0
- Hyd.Pressure1      1   30.778 -2257.8
- Fill.Pressure      1   30.779 -2257.7
<none>                   30.748 -2257.6
- Carb.Rel           1   30.781 -2257.6
- PSC.CO2            1   30.784 -2257.4
- PSC                1   30.788 -2257.2
- Fill.Ounces        1   30.795 -2256.7
- Carb.Flow          1   30.798 -2256.6
- Filler.Level       1   30.811 -2255.8
- PC.Volume          1   30.819 -2255.3
- Brand.CodeB        1   30.824 -2255.0
- Hyd.Pressure2      1   30.825 -2254.9
- Alch.Rel           1   30.870 -2252.3
- Pressure.Vacuum    1   30.906 -2250.1
- Brand.CodeC        1   30.925 -2249.0
- Pressure.Setpoint  1   30.940 -2248.1
- Brand.CodeD        1   30.952 -2247.3
- Balling            1   30.962 -2246.8
- Density            1   31.038 -2242.2
- Oxygen.Filler      1   31.047 -2241.7
- Hyd.Pressure3      1   31.059 -2241.0
- Bowl.Setpoint      1   31.115 -2237.6
- Balling.Lvl        1   31.153 -2235.4
- Temperature        1   31.384 -2221.7
- Usage.cont         1   31.409 -2220.3
- Carb.Pressure1     1   32.399 -2162.8
- Mnf.Flow           1   34.000 -2073.6

Step:  AIC=-2259.61
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    MFR + Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Air.Pressurer + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Air.Pressurer      1   30.749 -2261.6
- Hyd.Pressure4      1   30.756 -2261.1
- PSC.Fill           1   30.756 -2261.1
- Filler.Speed       1   30.765 -2260.6
- MFR                1   30.774 -2260.0
- Hyd.Pressure1      1   30.779 -2259.8
- Carb.Volume        1   30.779 -2259.7
- Fill.Pressure      1   30.779 -2259.7
<none>                   30.748 -2259.6
- Carb.Rel           1   30.781 -2259.6
- PSC.CO2            1   30.784 -2259.4
- PSC                1   30.788 -2259.2
- Fill.Ounces        1   30.796 -2258.7
- Carb.Temp          1   30.796 -2258.7
- Carb.Flow          1   30.798 -2258.6
- Filler.Level       1   30.811 -2257.8
- PC.Volume          1   30.819 -2257.3
- Brand.CodeB        1   30.824 -2257.0
- Hyd.Pressure2      1   30.825 -2256.9
- Alch.Rel           1   30.870 -2254.3
- Pressure.Vacuum    1   30.906 -2252.1
- Brand.CodeC        1   30.925 -2251.0
- Pressure.Setpoint  1   30.940 -2250.1
- Brand.CodeD        1   30.953 -2249.3
- Balling            1   30.962 -2248.8
- Density            1   31.038 -2244.2
- Oxygen.Filler      1   31.047 -2243.7
- Hyd.Pressure3      1   31.059 -2243.0
- Bowl.Setpoint      1   31.117 -2239.5
- Balling.Lvl        1   31.154 -2237.3
- Temperature        1   31.384 -2223.7
- Usage.cont         1   31.409 -2222.2
- Carb.Pressure1     1   32.408 -2164.3
- Mnf.Flow           1   34.000 -2075.6

Step:  AIC=-2261.55
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    MFR + Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure4      1   30.757 -2263.1
- PSC.Fill           1   30.757 -2263.1
- Filler.Speed       1   30.766 -2262.5
- MFR                1   30.775 -2262.0
- Hyd.Pressure1      1   30.781 -2261.6
- Fill.Pressure      1   30.781 -2261.6
- Carb.Volume        1   30.782 -2261.6
<none>                   30.749 -2261.6
- Carb.Rel           1   30.783 -2261.5
- PSC.CO2            1   30.785 -2261.4
- PSC                1   30.790 -2261.1
- Carb.Temp          1   30.796 -2260.7
- Fill.Ounces        1   30.797 -2260.7
- Carb.Flow          1   30.798 -2260.6
- Filler.Level       1   30.813 -2259.7
- PC.Volume          1   30.820 -2259.2
- Brand.CodeB        1   30.825 -2258.9
- Hyd.Pressure2      1   30.825 -2258.9
- Alch.Rel           1   30.871 -2256.2
- Pressure.Vacuum    1   30.914 -2253.6
- Brand.CodeC        1   30.925 -2252.9
- Pressure.Setpoint  1   30.944 -2251.8
- Brand.CodeD        1   30.954 -2251.3
- Balling            1   30.962 -2250.8
- Density            1   31.040 -2246.1
- Oxygen.Filler      1   31.052 -2245.4
- Hyd.Pressure3      1   31.065 -2244.6
- Bowl.Setpoint      1   31.123 -2241.2
- Balling.Lvl        1   31.154 -2239.3
- Temperature        1   31.386 -2225.6
- Usage.cont         1   31.411 -2224.1
- Carb.Pressure1     1   32.410 -2166.2
- Mnf.Flow           1   34.001 -2077.6

Step:  AIC=-2263.06
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + MFR + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- PSC.Fill           1   30.765 -2264.6
- Filler.Speed       1   30.769 -2264.3
- MFR                1   30.780 -2263.7
- Fill.Pressure      1   30.788 -2263.2
- Carb.Volume        1   30.789 -2263.1
- Hyd.Pressure1      1   30.790 -2263.1
<none>                   30.757 -2263.1
- Carb.Rel           1   30.791 -2263.0
- PSC.CO2            1   30.793 -2262.9
- PSC                1   30.798 -2262.6
- Carb.Flow          1   30.804 -2262.2
- Carb.Temp          1   30.805 -2262.2
- Fill.Ounces        1   30.807 -2262.0
- Filler.Level       1   30.818 -2261.4
- PC.Volume          1   30.828 -2260.8
- Brand.CodeB        1   30.828 -2260.8
- Hyd.Pressure2      1   30.835 -2260.4
- Alch.Rel           1   30.878 -2257.8
- Pressure.Vacuum    1   30.929 -2254.8
- Brand.CodeC        1   30.943 -2253.9
- Pressure.Setpoint  1   30.949 -2253.5
- Brand.CodeD        1   30.957 -2253.1
- Balling            1   30.984 -2251.4
- Density            1   31.052 -2247.4
- Oxygen.Filler      1   31.058 -2247.1
- Hyd.Pressure3      1   31.075 -2246.0
- Bowl.Setpoint      1   31.124 -2243.1
- Balling.Lvl        1   31.179 -2239.9
- Temperature        1   31.394 -2227.2
- Usage.cont         1   31.418 -2225.7
- Carb.Pressure1     1   32.423 -2167.5
- Mnf.Flow           1   34.008 -2079.2

Step:  AIC=-2264.55
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.CO2 + Mnf.Flow + 
    Carb.Pressure1 + Fill.Pressure + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Filler.Level + Filler.Speed + Temperature + 
    Usage.cont + Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Filler.Speed       1   30.778 -2265.8
- MFR                1   30.789 -2265.1
- Carb.Volume        1   30.797 -2264.7
- Fill.Pressure      1   30.797 -2264.6
- Hyd.Pressure1      1   30.798 -2264.6
<none>                   30.765 -2264.6
- Carb.Rel           1   30.799 -2264.5
- PSC.CO2            1   30.809 -2263.9
- Carb.Flow          1   30.811 -2263.8
- Carb.Temp          1   30.813 -2263.7
- PSC                1   30.816 -2263.5
- Fill.Ounces        1   30.818 -2263.4
- Filler.Level       1   30.826 -2262.9
- PC.Volume          1   30.834 -2262.4
- Brand.CodeB        1   30.837 -2262.3
- Hyd.Pressure2      1   30.842 -2262.0
- Alch.Rel           1   30.886 -2259.3
- Pressure.Vacuum    1   30.935 -2256.3
- Brand.CodeC        1   30.953 -2255.3
- Pressure.Setpoint  1   30.958 -2255.0
- Brand.CodeD        1   30.966 -2254.5
- Balling            1   30.993 -2252.9
- Density            1   31.060 -2248.9
- Oxygen.Filler      1   31.064 -2248.7
- Hyd.Pressure3      1   31.083 -2247.5
- Bowl.Setpoint      1   31.129 -2244.8
- Balling.Lvl        1   31.187 -2241.3
- Temperature        1   31.407 -2228.4
- Usage.cont         1   31.425 -2227.3
- Carb.Pressure1     1   32.434 -2168.9
- Mnf.Flow           1   34.019 -2080.6

Step:  AIC=-2265.79
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.CO2 + Mnf.Flow + 
    Carb.Pressure1 + Fill.Pressure + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Filler.Level + Temperature + Usage.cont + 
    Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure1      1   30.807 -2266.0
- Carb.Volume        1   30.808 -2266.0
- Fill.Pressure      1   30.811 -2265.8
- Carb.Rel           1   30.811 -2265.8
<none>                   30.778 -2265.8
- PSC.CO2            1   30.822 -2265.1
- Carb.Temp          1   30.826 -2264.9
- PSC                1   30.827 -2264.8
- Fill.Ounces        1   30.829 -2264.7
- MFR                1   30.841 -2264.0
- Filler.Level       1   30.844 -2263.8
- Hyd.Pressure2      1   30.849 -2263.5
- PC.Volume          1   30.849 -2263.5
- Brand.CodeB        1   30.864 -2262.6
- Carb.Flow          1   30.869 -2262.3
- Alch.Rel           1   30.892 -2261.0
- Pressure.Vacuum    1   30.935 -2258.3
- Brand.CodeC        1   30.953 -2257.3
- Pressure.Setpoint  1   30.981 -2255.6
- Brand.CodeD        1   30.983 -2255.5
- Balling            1   30.993 -2254.9
- Density            1   31.075 -2250.0
- Oxygen.Filler      1   31.083 -2249.6
- Hyd.Pressure3      1   31.106 -2248.2
- Bowl.Setpoint      1   31.171 -2244.3
- Balling.Lvl        1   31.188 -2243.3
- Usage.cont         1   31.425 -2229.3
- Temperature        1   31.458 -2227.3
- Carb.Pressure1     1   32.441 -2170.4
- Mnf.Flow           1   34.027 -2082.2

Step:  AIC=-2266.03
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.CO2 + Mnf.Flow + 
    Carb.Pressure1 + Fill.Pressure + Hyd.Pressure2 + Hyd.Pressure3 + 
    Filler.Level + Temperature + Usage.cont + Carb.Flow + Density + 
    MFR + Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Fill.Pressure      1   30.834 -2266.4
<none>                   30.807 -2266.0
- Carb.Volume        1   30.841 -2266.0
- Carb.Rel           1   30.843 -2265.9
- PSC.CO2            1   30.851 -2265.4
- Carb.Temp          1   30.851 -2265.4
- Hyd.Pressure2      1   30.852 -2265.3
- Fill.Ounces        1   30.856 -2265.1
- MFR                1   30.859 -2264.9
- PSC                1   30.859 -2264.9
- PC.Volume          1   30.862 -2264.8
- Filler.Level       1   30.871 -2264.2
- Brand.CodeB        1   30.887 -2263.2
- Carb.Flow          1   30.901 -2262.4
- Alch.Rel           1   30.929 -2260.7
- Pressure.Vacuum    1   30.947 -2259.7
- Brand.CodeC        1   30.989 -2257.2
- Pressure.Setpoint  1   30.996 -2256.7
- Brand.CodeD        1   31.006 -2256.2
- Balling            1   31.030 -2254.7
- Density            1   31.109 -2250.0
- Oxygen.Filler      1   31.121 -2249.3
- Hyd.Pressure3      1   31.146 -2247.8
- Balling.Lvl        1   31.220 -2243.4
- Bowl.Setpoint      1   31.220 -2243.4
- Usage.cont         1   31.465 -2228.9
- Temperature        1   31.489 -2227.5
- Carb.Pressure1     1   32.441 -2172.4
- Mnf.Flow           1   34.050 -2082.9

Step:  AIC=-2266.43
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.CO2 + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + 
    Temperature + Usage.cont + Carb.Flow + Density + MFR + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Volume        1   30.866 -2266.5
- Carb.Rel           1   30.867 -2266.5
<none>                   30.834 -2266.4
- PSC.CO2            1   30.877 -2265.9
- Carb.Temp          1   30.880 -2265.7
- Fill.Ounces        1   30.880 -2265.7
- MFR                1   30.881 -2265.6
- PSC                1   30.885 -2265.4
- Hyd.Pressure2      1   30.887 -2265.2
- PC.Volume          1   30.896 -2264.7
- Filler.Level       1   30.913 -2263.7
- Brand.CodeB        1   30.913 -2263.7
- Carb.Flow          1   30.938 -2262.2
- Alch.Rel           1   30.962 -2260.7
- Pressure.Vacuum    1   30.978 -2259.8
- Pressure.Setpoint  1   31.004 -2258.3
- Brand.CodeC        1   31.016 -2257.6
- Brand.CodeD        1   31.022 -2257.2
- Balling            1   31.068 -2254.4
- Density            1   31.132 -2250.6
- Oxygen.Filler      1   31.143 -2249.9
- Hyd.Pressure3      1   31.210 -2246.0
- Balling.Lvl        1   31.258 -2243.2
- Bowl.Setpoint      1   31.288 -2241.4
- Usage.cont         1   31.479 -2230.1
- Temperature        1   31.559 -2225.4
- Carb.Pressure1     1   32.447 -2174.1
- Mnf.Flow           1   34.063 -2084.2

Step:  AIC=-2266.5
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Rel           1   30.881 -2267.6
<none>                   30.866 -2266.5
- PSC.CO2            1   30.907 -2266.0
- MFR                1   30.915 -2265.6
- Hyd.Pressure2      1   30.919 -2265.3
- PSC                1   30.921 -2265.2
- PC.Volume          1   30.925 -2264.9
- Fill.Ounces        1   30.929 -2264.7
- Carb.Temp          1   30.935 -2264.4
- Filler.Level       1   30.935 -2264.4
- Brand.CodeB        1   30.968 -2262.4
- Carb.Flow          1   30.979 -2261.8
- Alch.Rel           1   31.007 -2260.1
- Pressure.Vacuum    1   31.008 -2260.0
- Brand.CodeC        1   31.025 -2259.0
- Brand.CodeD        1   31.027 -2258.9
- Pressure.Setpoint  1   31.045 -2257.8
- Balling            1   31.111 -2253.9
- Oxygen.Filler      1   31.168 -2250.5
- Density            1   31.170 -2250.4
- Hyd.Pressure3      1   31.252 -2245.5
- Bowl.Setpoint      1   31.305 -2242.4
- Balling.Lvl        1   31.314 -2241.8
- Usage.cont         1   31.523 -2229.6
- Temperature        1   31.579 -2226.2
- Carb.Pressure1     1   32.488 -2173.7
- Mnf.Flow           1   34.125 -2082.8

Step:  AIC=-2267.6
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
<none>                   30.881 -2267.6
- PSC.CO2            1   30.923 -2267.1
- MFR                1   30.930 -2266.7
- Hyd.Pressure2      1   30.930 -2266.7
- PSC                1   30.937 -2266.3
- PC.Volume          1   30.940 -2266.1
- Filler.Level       1   30.948 -2265.6
- Fill.Ounces        1   30.948 -2265.6
- Carb.Temp          1   30.949 -2265.5
- Brand.CodeB        1   30.988 -2263.2
- Carb.Flow          1   30.989 -2263.2
- Pressure.Vacuum    1   31.023 -2261.1
- Alch.Rel           1   31.037 -2260.3
- Brand.CodeC        1   31.038 -2260.2
- Pressure.Setpoint  1   31.057 -2259.1
- Brand.CodeD        1   31.059 -2258.9
- Balling            1   31.146 -2253.8
- Density            1   31.173 -2252.2
- Oxygen.Filler      1   31.185 -2251.5
- Hyd.Pressure3      1   31.264 -2246.8
- Bowl.Setpoint      1   31.323 -2243.3
- Balling.Lvl        1   31.399 -2238.8
- Usage.cont         1   31.544 -2230.3
- Temperature        1   31.581 -2228.1
- Carb.Pressure1     1   32.527 -2173.6
- Mnf.Flow           1   34.159 -2083.0
Start:  AIC=-2208.54
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + Carb.Temp + PSC + 
    PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Fill.Pressure + 
    Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Pressure      1   31.574 -2210.5
- MFR                1   31.576 -2210.4
- Fill.Pressure      1   31.577 -2210.4
- Hyd.Pressure4      1   31.577 -2210.4
- Air.Pressurer      1   31.578 -2210.3
- Filler.Speed       1   31.579 -2210.3
- Carb.Temp          1   31.583 -2210.0
- Carb.Volume        1   31.589 -2209.7
- PSC.Fill           1   31.590 -2209.6
- Hyd.Pressure1      1   31.595 -2209.3
- PSC                1   31.608 -2208.6
<none>                   31.574 -2208.5
- PSC.CO2            1   31.616 -2208.1
- Alch.Rel           1   31.634 -2207.0
- Carb.Rel           1   31.635 -2206.9
- PC.Volume          1   31.636 -2206.9
- Filler.Level       1   31.650 -2206.1
- Carb.Flow          1   31.654 -2205.9
- Hyd.Pressure2      1   31.678 -2204.5
- Fill.Ounces        1   31.680 -2204.3
- Brand.CodeC        1   31.689 -2203.8
- Brand.CodeB        1   31.717 -2202.2
- Pressure.Setpoint  1   31.733 -2201.3
- Brand.CodeD        1   31.761 -2199.7
- Pressure.Vacuum    1   31.769 -2199.2
- Density            1   31.820 -2196.2
- Oxygen.Filler      1   31.825 -2195.9
- Balling            1   31.901 -2191.5
- Hyd.Pressure3      1   31.945 -2189.0
- Bowl.Setpoint      1   32.012 -2185.1
- Balling.Lvl        1   32.161 -2176.5
- Temperature        1   32.206 -2173.9
- Usage.cont         1   32.222 -2173.0
- Carb.Pressure1     1   32.853 -2137.1
- Mnf.Flow           1   34.441 -2049.8

Step:  AIC=-2210.52
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    MFR + Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Air.Pressurer + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- MFR                1   31.576 -2212.4
- Fill.Pressure      1   31.577 -2212.4
- Hyd.Pressure4      1   31.577 -2212.4
- Air.Pressurer      1   31.579 -2212.3
- Filler.Speed       1   31.579 -2212.3
- PSC.Fill           1   31.591 -2211.6
- Hyd.Pressure1      1   31.596 -2211.3
- Carb.Volume        1   31.604 -2210.8
- PSC                1   31.608 -2210.5
<none>                   31.574 -2210.5
- PSC.CO2            1   31.616 -2210.1
- Alch.Rel           1   31.634 -2209.0
- Carb.Temp          1   31.635 -2209.0
- Carb.Rel           1   31.635 -2208.9
- PC.Volume          1   31.636 -2208.9
- Filler.Level       1   31.651 -2208.1
- Carb.Flow          1   31.654 -2207.9
- Hyd.Pressure2      1   31.678 -2206.5
- Fill.Ounces        1   31.681 -2206.3
- Brand.CodeC        1   31.689 -2205.8
- Brand.CodeB        1   31.718 -2204.2
- Pressure.Setpoint  1   31.734 -2203.2
- Brand.CodeD        1   31.761 -2201.6
- Pressure.Vacuum    1   31.770 -2201.1
- Density            1   31.820 -2198.2
- Oxygen.Filler      1   31.826 -2197.9
- Balling            1   31.901 -2193.5
- Hyd.Pressure3      1   31.945 -2191.0
- Bowl.Setpoint      1   32.014 -2186.9
- Balling.Lvl        1   32.162 -2178.4
- Temperature        1   32.207 -2175.8
- Usage.cont         1   32.223 -2174.9
- Carb.Pressure1     1   32.860 -2138.7
- Mnf.Flow           1   34.441 -2051.8

Step:  AIC=-2212.42
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Air.Pressurer + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Fill.Pressure      1   31.578 -2214.3
- Hyd.Pressure4      1   31.580 -2214.2
- Air.Pressurer      1   31.580 -2214.2
- Filler.Speed       1   31.585 -2213.9
- PSC.Fill           1   31.592 -2213.5
- Hyd.Pressure1      1   31.596 -2213.2
- Carb.Volume        1   31.606 -2212.7
- PSC                1   31.610 -2212.4
<none>                   31.576 -2212.4
- PSC.CO2            1   31.617 -2212.0
- Alch.Rel           1   31.635 -2211.0
- Carb.Temp          1   31.637 -2210.9
- Carb.Rel           1   31.637 -2210.8
- PC.Volume          1   31.638 -2210.8
- Filler.Level       1   31.652 -2210.0
- Carb.Flow          1   31.654 -2209.9
- Hyd.Pressure2      1   31.678 -2208.4
- Fill.Ounces        1   31.683 -2208.2
- Brand.CodeC        1   31.693 -2207.6
- Brand.CodeB        1   31.718 -2206.2
- Pressure.Setpoint  1   31.734 -2205.2
- Brand.CodeD        1   31.761 -2203.6
- Pressure.Vacuum    1   31.770 -2203.1
- Density            1   31.821 -2200.1
- Oxygen.Filler      1   31.826 -2199.9
- Balling            1   31.901 -2195.5
- Hyd.Pressure3      1   31.947 -2192.8
- Bowl.Setpoint      1   32.016 -2188.8
- Balling.Lvl        1   32.163 -2180.4
- Temperature        1   32.213 -2177.5
- Usage.cont         1   32.234 -2176.3
- Carb.Pressure1     1   32.863 -2140.5
- Mnf.Flow           1   34.443 -2053.7

Step:  AIC=-2214.29
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Air.Pressurer + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure4      1   31.582 -2216.1
- Air.Pressurer      1   31.582 -2216.1
- Filler.Speed       1   31.587 -2215.8
- PSC.Fill           1   31.595 -2215.3
- Hyd.Pressure1      1   31.598 -2215.2
- Carb.Volume        1   31.608 -2214.6
- PSC                1   31.612 -2214.3
<none>                   31.578 -2214.3
- PSC.CO2            1   31.619 -2213.9
- Alch.Rel           1   31.639 -2212.8
- Carb.Rel           1   31.639 -2212.8
- Carb.Temp          1   31.639 -2212.7
- PC.Volume          1   31.642 -2212.6
- Carb.Flow          1   31.658 -2211.6
- Filler.Level       1   31.660 -2211.5
- Hyd.Pressure2      1   31.684 -2210.1
- Fill.Ounces        1   31.684 -2210.1
- Brand.CodeC        1   31.695 -2209.5
- Brand.CodeB        1   31.719 -2208.1
- Brand.CodeD        1   31.761 -2205.6
- Pressure.Vacuum    1   31.774 -2204.9
- Pressure.Setpoint  1   31.778 -2204.6
- Density            1   31.822 -2202.1
- Oxygen.Filler      1   31.827 -2201.8
- Balling            1   31.911 -2196.9
- Hyd.Pressure3      1   31.968 -2193.6
- Bowl.Setpoint      1   32.035 -2189.8
- Balling.Lvl        1   32.172 -2181.8
- Temperature        1   32.229 -2178.6
- Usage.cont         1   32.234 -2178.3
- Carb.Pressure1     1   32.864 -2142.5
- Mnf.Flow           1   34.443 -2055.7

Step:  AIC=-2216.07
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Filler.Level + Filler.Speed + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Air.Pressurer      1   31.586 -2217.8
- PSC.Fill           1   31.598 -2217.1
- Filler.Speed       1   31.599 -2217.1
- Hyd.Pressure1      1   31.601 -2217.0
- Carb.Volume        1   31.612 -2216.3
- PSC                1   31.616 -2216.1
<none>                   31.582 -2216.1
- PSC.CO2            1   31.623 -2215.7
- Carb.Rel           1   31.642 -2214.6
- Carb.Temp          1   31.643 -2214.5
- Alch.Rel           1   31.643 -2214.5
- PC.Volume          1   31.647 -2214.3
- Carb.Flow          1   31.664 -2213.3
- Filler.Level       1   31.667 -2213.1
- Hyd.Pressure2      1   31.686 -2212.0
- Fill.Ounces        1   31.686 -2212.0
- Brand.CodeC        1   31.696 -2211.4
- Brand.CodeB        1   31.729 -2209.5
- Pressure.Vacuum    1   31.774 -2206.9
- Pressure.Setpoint  1   31.783 -2206.3
- Brand.CodeD        1   31.800 -2205.4
- Density            1   31.824 -2204.0
- Oxygen.Filler      1   31.833 -2203.5
- Balling            1   31.912 -2198.9
- Hyd.Pressure3      1   31.970 -2195.5
- Bowl.Setpoint      1   32.050 -2190.9
- Balling.Lvl        1   32.175 -2183.6
- Temperature        1   32.232 -2180.4
- Usage.cont         1   32.243 -2179.8
- Carb.Pressure1     1   32.867 -2144.3
- Mnf.Flow           1   34.452 -2057.2

Step:  AIC=-2217.84
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Filler.Level + Filler.Speed + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- PSC.Fill           1   31.603 -2218.9
- Filler.Speed       1   31.603 -2218.9
- Hyd.Pressure1      1   31.604 -2218.8
- Carb.Volume        1   31.614 -2218.2
- PSC                1   31.619 -2217.9
<none>                   31.586 -2217.8
- PSC.CO2            1   31.627 -2217.4
- Carb.Rel           1   31.644 -2216.5
- Alch.Rel           1   31.647 -2216.3
- Carb.Temp          1   31.649 -2216.2
- PC.Volume          1   31.650 -2216.1
- Carb.Flow          1   31.669 -2215.0
- Filler.Level       1   31.670 -2214.9
- Fill.Ounces        1   31.688 -2213.9
- Hyd.Pressure2      1   31.698 -2213.3
- Brand.CodeC        1   31.700 -2213.2
- Brand.CodeB        1   31.733 -2211.3
- Pressure.Vacuum    1   31.774 -2208.9
- Pressure.Setpoint  1   31.784 -2208.3
- Brand.CodeD        1   31.804 -2207.1
- Density            1   31.826 -2205.8
- Oxygen.Filler      1   31.833 -2205.4
- Balling            1   31.917 -2200.5
- Hyd.Pressure3      1   32.004 -2195.5
- Bowl.Setpoint      1   32.050 -2192.8
- Balling.Lvl        1   32.180 -2185.3
- Temperature        1   32.235 -2182.2
- Usage.cont         1   32.264 -2180.6
- Carb.Pressure1     1   32.885 -2145.3
- Mnf.Flow           1   34.467 -2058.4

Step:  AIC=-2218.88
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.CO2 + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Filler.Speed       1   31.619 -2219.9
- Hyd.Pressure1      1   31.619 -2219.9
- Carb.Volume        1   31.629 -2219.3
<none>                   31.603 -2218.9
- PSC                1   31.647 -2218.3
- PSC.CO2            1   31.654 -2217.8
- Carb.Rel           1   31.660 -2217.5
- PC.Volume          1   31.662 -2217.4
- Alch.Rel           1   31.663 -2217.3
- Carb.Temp          1   31.665 -2217.2
- Carb.Flow          1   31.682 -2216.2
- Filler.Level       1   31.687 -2215.9
- Fill.Ounces        1   31.709 -2214.6
- Hyd.Pressure2      1   31.712 -2214.5
- Brand.CodeC        1   31.717 -2214.2
- Brand.CodeB        1   31.750 -2212.3
- Pressure.Vacuum    1   31.787 -2210.1
- Pressure.Setpoint  1   31.802 -2209.2
- Brand.CodeD        1   31.822 -2208.1
- Density            1   31.842 -2206.9
- Oxygen.Filler      1   31.846 -2206.7
- Balling            1   31.934 -2201.6
- Hyd.Pressure3      1   32.020 -2196.6
- Bowl.Setpoint      1   32.063 -2194.1
- Balling.Lvl        1   32.197 -2186.4
- Temperature        1   32.258 -2182.9
- Usage.cont         1   32.279 -2181.7
- Carb.Pressure1     1   32.903 -2146.3
- Mnf.Flow           1   34.484 -2059.4

Step:  AIC=-2219.91
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.CO2 + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Filler.Level + Temperature + Usage.cont + Carb.Flow + Density + 
    Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure1      1   31.632 -2221.2
- Carb.Volume        1   31.645 -2220.4
<none>                   31.619 -2219.9
- PSC                1   31.662 -2219.4
- PSC.CO2            1   31.670 -2218.9
- Alch.Rel           1   31.671 -2218.9
- Carb.Rel           1   31.676 -2218.6
- Carb.Temp          1   31.683 -2218.2
- PC.Volume          1   31.683 -2218.2
- Filler.Level       1   31.713 -2216.4
- Hyd.Pressure2      1   31.718 -2216.1
- Fill.Ounces        1   31.721 -2216.0
- Brand.CodeC        1   31.722 -2215.9
- Carb.Flow          1   31.780 -2212.5
- Brand.CodeB        1   31.788 -2212.1
- Pressure.Vacuum    1   31.788 -2212.1
- Pressure.Setpoint  1   31.834 -2209.4
- Brand.CodeD        1   31.840 -2209.0
- Density            1   31.857 -2208.0
- Oxygen.Filler      1   31.864 -2207.6
- Balling            1   31.943 -2203.0
- Hyd.Pressure3      1   32.051 -2196.8
- Bowl.Setpoint      1   32.137 -2191.9
- Balling.Lvl        1   32.203 -2188.0
- Usage.cont         1   32.281 -2183.6
- Temperature        1   32.343 -2180.0
- Carb.Pressure1     1   32.908 -2148.0
- Mnf.Flow           1   34.503 -2060.4

Step:  AIC=-2221.18
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.CO2 + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Volume        1   31.659 -2221.6
<none>                   31.632 -2221.2
- PSC                1   31.676 -2220.6
- PSC.CO2            1   31.681 -2220.3
- PC.Volume          1   31.686 -2220.0
- Alch.Rel           1   31.687 -2220.0
- Carb.Rel           1   31.691 -2219.7
- Carb.Temp          1   31.693 -2219.6
- Hyd.Pressure2      1   31.719 -2218.1
- Filler.Level       1   31.721 -2217.9
- Fill.Ounces        1   31.733 -2217.3
- Brand.CodeC        1   31.737 -2217.0
- Carb.Flow          1   31.791 -2213.9
- Pressure.Vacuum    1   31.791 -2213.8
- Brand.CodeB        1   31.795 -2213.6
- Pressure.Setpoint  1   31.841 -2211.0
- Brand.CodeD        1   31.851 -2210.4
- Density            1   31.871 -2209.2
- Oxygen.Filler      1   31.881 -2208.7
- Balling            1   31.969 -2203.6
- Hyd.Pressure3      1   32.070 -2197.7
- Bowl.Setpoint      1   32.153 -2192.9
- Balling.Lvl        1   32.224 -2188.8
- Usage.cont         1   32.303 -2184.3
- Temperature        1   32.352 -2181.5
- Carb.Pressure1     1   32.908 -2150.0
- Mnf.Flow           1   34.519 -2061.6

Step:  AIC=-2221.57
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
<none>                   31.659 -2221.6
- Carb.Rel           1   31.697 -2221.3
- PSC.CO2            1   31.706 -2220.8
- PSC                1   31.707 -2220.8
- PC.Volume          1   31.712 -2220.5
- Alch.Rel           1   31.723 -2219.8
- Filler.Level       1   31.742 -2218.7
- Hyd.Pressure2      1   31.745 -2218.6
- Carb.Temp          1   31.746 -2218.5
- Brand.CodeC        1   31.750 -2218.3
- Fill.Ounces        1   31.786 -2216.2
- Pressure.Vacuum    1   31.813 -2214.6
- Carb.Flow          1   31.824 -2213.9
- Brand.CodeB        1   31.850 -2212.5
- Brand.CodeD        1   31.853 -2212.3
- Pressure.Setpoint  1   31.877 -2210.9
- Density            1   31.900 -2209.5
- Oxygen.Filler      1   31.904 -2209.3
- Balling            1   32.003 -2203.6
- Hyd.Pressure3      1   32.108 -2197.5
- Bowl.Setpoint      1   32.174 -2193.7
- Balling.Lvl        1   32.257 -2188.9
- Usage.cont         1   32.348 -2183.7
- Temperature        1   32.365 -2182.8
- Carb.Pressure1     1   32.943 -2150.0
- Mnf.Flow           1   34.582 -2060.2
Start:  AIC=-2193.04
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + Carb.Temp + PSC + 
    PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Fill.Pressure + 
    Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Pressure      1   31.841 -2195.0
- Carb.Temp          1   31.841 -2195.0
- Air.Pressurer      1   31.843 -2194.8
- Hyd.Pressure1      1   31.844 -2194.8
- Filler.Speed       1   31.845 -2194.7
- Fill.Pressure      1   31.846 -2194.7
- MFR                1   31.848 -2194.5
- Hyd.Pressure4      1   31.850 -2194.5
- Carb.Volume        1   31.860 -2193.9
- Brand.CodeB        1   31.866 -2193.5
- PSC                1   31.872 -2193.2
<none>                   31.840 -2193.0
- Carb.Rel           1   31.875 -2193.0
- PSC.Fill           1   31.876 -2193.0
- PSC.CO2            1   31.882 -2192.6
- Fill.Ounces        1   31.886 -2192.3
- Filler.Level       1   31.896 -2191.8
- PC.Volume          1   31.908 -2191.1
- Carb.Flow          1   31.909 -2191.0
- Hyd.Pressure2      1   31.917 -2190.5
- Alch.Rel           1   31.935 -2189.5
- Pressure.Vacuum    1   31.979 -2187.0
- Pressure.Setpoint  1   32.000 -2185.8
- Density            1   32.045 -2183.2
- Brand.CodeD        1   32.079 -2181.2
- Balling            1   32.090 -2180.6
- Oxygen.Filler      1   32.106 -2179.7
- Brand.CodeC        1   32.130 -2178.2
- Balling.Lvl        1   32.191 -2174.8
- Bowl.Setpoint      1   32.216 -2173.3
- Hyd.Pressure3      1   32.237 -2172.1
- Temperature        1   32.485 -2157.9
- Usage.cont         1   32.597 -2151.6
- Carb.Pressure1     1   33.273 -2113.6
- Mnf.Flow           1   34.896 -2025.5

Step:  AIC=-2195
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    MFR + Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Air.Pressurer + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Air.Pressurer      1   31.844 -2196.8
- Hyd.Pressure1      1   31.844 -2196.8
- Filler.Speed       1   31.846 -2196.7
- Fill.Pressure      1   31.846 -2196.7
- MFR                1   31.849 -2196.5
- Hyd.Pressure4      1   31.851 -2196.4
- Brand.CodeB        1   31.866 -2195.5
- Carb.Volume        1   31.869 -2195.4
- Carb.Temp          1   31.872 -2195.2
- PSC                1   31.873 -2195.1
<none>                   31.841 -2195.0
- Carb.Rel           1   31.876 -2194.9
- PSC.Fill           1   31.876 -2194.9
- PSC.CO2            1   31.883 -2194.6
- Fill.Ounces        1   31.887 -2194.3
- Filler.Level       1   31.897 -2193.7
- PC.Volume          1   31.908 -2193.1
- Carb.Flow          1   31.909 -2193.0
- Hyd.Pressure2      1   31.918 -2192.5
- Alch.Rel           1   31.937 -2191.4
- Pressure.Vacuum    1   31.979 -2189.0
- Pressure.Setpoint  1   32.000 -2187.7
- Density            1   32.046 -2185.1
- Brand.CodeD        1   32.079 -2183.2
- Balling            1   32.090 -2182.5
- Oxygen.Filler      1   32.107 -2181.6
- Brand.CodeC        1   32.131 -2180.2
- Balling.Lvl        1   32.191 -2176.8
- Bowl.Setpoint      1   32.218 -2175.2
- Hyd.Pressure3      1   32.239 -2174.0
- Temperature        1   32.488 -2159.8
- Usage.cont         1   32.597 -2153.6
- Carb.Pressure1     1   33.274 -2115.5
- Mnf.Flow           1   34.901 -2027.2

Step:  AIC=-2196.81
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    MFR + Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure1      1   31.848 -2198.6
- Filler.Speed       1   31.850 -2198.5
- Fill.Pressure      1   31.850 -2198.4
- MFR                1   31.852 -2198.3
- Hyd.Pressure4      1   31.854 -2198.2
- Brand.CodeB        1   31.869 -2197.3
- Carb.Temp          1   31.875 -2197.0
- Carb.Volume        1   31.875 -2197.0
- PSC                1   31.877 -2196.9
<none>                   31.844 -2196.8
- PSC.Fill           1   31.879 -2196.8
- Carb.Rel           1   31.881 -2196.6
- PSC.CO2            1   31.886 -2196.4
- Fill.Ounces        1   31.891 -2196.1
- Filler.Level       1   31.901 -2195.5
- PC.Volume          1   31.911 -2194.9
- Carb.Flow          1   31.912 -2194.9
- Hyd.Pressure2      1   31.919 -2194.5
- Alch.Rel           1   31.941 -2193.2
- Pressure.Vacuum    1   31.991 -2190.3
- Pressure.Setpoint  1   32.007 -2189.3
- Density            1   32.050 -2186.8
- Brand.CodeD        1   32.082 -2185.0
- Balling            1   32.092 -2184.4
- Oxygen.Filler      1   32.118 -2183.0
- Brand.CodeC        1   32.135 -2182.0
- Balling.Lvl        1   32.193 -2178.6
- Bowl.Setpoint      1   32.227 -2176.7
- Hyd.Pressure3      1   32.243 -2175.8
- Temperature        1   32.493 -2161.5
- Usage.cont         1   32.598 -2155.5
- Carb.Pressure1     1   33.274 -2117.5
- Mnf.Flow           1   34.901 -2029.2

Step:  AIC=-2198.57
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + MFR + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Filler.Speed       1   31.853 -2200.3
- Fill.Pressure      1   31.853 -2200.2
- MFR                1   31.855 -2200.2
- Hyd.Pressure4      1   31.858 -2200.0
- Brand.CodeB        1   31.873 -2199.1
- Carb.Temp          1   31.878 -2198.8
- Carb.Volume        1   31.880 -2198.7
- PSC                1   31.882 -2198.6
<none>                   31.848 -2198.6
- PSC.Fill           1   31.882 -2198.6
- Carb.Rel           1   31.886 -2198.3
- PSC.CO2            1   31.890 -2198.1
- Fill.Ounces        1   31.894 -2197.9
- Filler.Level       1   31.904 -2197.3
- PC.Volume          1   31.911 -2196.9
- Carb.Flow          1   31.918 -2196.5
- Hyd.Pressure2      1   31.922 -2196.3
- Alch.Rel           1   31.947 -2194.8
- Pressure.Vacuum    1   31.991 -2192.3
- Pressure.Setpoint  1   32.008 -2191.3
- Density            1   32.056 -2188.5
- Brand.CodeD        1   32.084 -2186.9
- Balling            1   32.098 -2186.1
- Oxygen.Filler      1   32.125 -2184.5
- Brand.CodeC        1   32.140 -2183.7
- Balling.Lvl        1   32.197 -2180.4
- Bowl.Setpoint      1   32.237 -2178.1
- Hyd.Pressure3      1   32.253 -2177.2
- Temperature        1   32.498 -2163.2
- Usage.cont         1   32.607 -2157.0
- Carb.Pressure1     1   33.282 -2119.1
- Mnf.Flow           1   34.901 -2031.2

Step:  AIC=-2200.27
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Fill.Pressure      1   31.859 -2201.9
- Hyd.Pressure4      1   31.860 -2201.8
- MFR                1   31.872 -2201.2
- Brand.CodeB        1   31.882 -2200.6
- Carb.Temp          1   31.883 -2200.5
- Carb.Volume        1   31.884 -2200.5
- PSC                1   31.886 -2200.3
<none>                   31.853 -2200.3
- PSC.Fill           1   31.888 -2200.3
- Carb.Rel           1   31.891 -2200.1
- PSC.CO2            1   31.895 -2199.8
- Fill.Ounces        1   31.899 -2199.6
- Filler.Level       1   31.911 -2198.9
- PC.Volume          1   31.920 -2198.4
- Hyd.Pressure2      1   31.925 -2198.1
- Alch.Rel           1   31.949 -2196.7
- Carb.Flow          1   31.964 -2195.8
- Pressure.Vacuum    1   31.991 -2194.3
- Pressure.Setpoint  1   32.019 -2192.7
- Density            1   32.063 -2190.1
- Brand.CodeD        1   32.087 -2188.7
- Balling            1   32.100 -2188.0
- Oxygen.Filler      1   32.133 -2186.1
- Brand.CodeC        1   32.141 -2185.6
- Balling.Lvl        1   32.198 -2182.4
- Bowl.Setpoint      1   32.258 -2178.9
- Hyd.Pressure3      1   32.265 -2178.5
- Temperature        1   32.531 -2163.3
- Usage.cont         1   32.610 -2158.8
- Carb.Pressure1     1   33.287 -2120.8
- Mnf.Flow           1   34.916 -2032.4

Step:  AIC=-2201.94
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Hyd.Pressure4 + Filler.Level + Temperature + Usage.cont + 
    Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure4      1   31.866 -2203.5
- MFR                1   31.876 -2202.9
- Brand.CodeB        1   31.888 -2202.3
- Carb.Volume        1   31.889 -2202.2
- Carb.Temp          1   31.890 -2202.1
- PSC                1   31.891 -2202.1
<none>                   31.859 -2201.9
- PSC.Fill           1   31.894 -2201.9
- Carb.Rel           1   31.895 -2201.8
- PSC.CO2            1   31.900 -2201.5
- Fill.Ounces        1   31.904 -2201.3
- Filler.Level       1   31.921 -2200.3
- PC.Volume          1   31.930 -2199.8
- Hyd.Pressure2      1   31.936 -2199.5
- Alch.Rel           1   31.956 -2198.3
- Carb.Flow          1   31.977 -2197.1
- Pressure.Vacuum    1   32.000 -2195.8
- Pressure.Setpoint  1   32.048 -2193.0
- Density            1   32.068 -2191.8
- Brand.CodeD        1   32.090 -2190.6
- Balling            1   32.112 -2189.3
- Oxygen.Filler      1   32.138 -2187.8
- Brand.CodeC        1   32.147 -2187.3
- Balling.Lvl        1   32.210 -2183.7
- Bowl.Setpoint      1   32.279 -2179.7
- Hyd.Pressure3      1   32.295 -2178.8
- Temperature        1   32.560 -2163.7
- Usage.cont         1   32.612 -2160.7
- Carb.Pressure1     1   33.287 -2122.8
- Mnf.Flow           1   34.916 -2034.4

Step:  AIC=-2203.54
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Filler.Level + Temperature + Usage.cont + Carb.Flow + Density + 
    MFR + Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- MFR                1   31.878 -2204.8
- Brand.CodeB        1   31.891 -2204.1
- Carb.Volume        1   31.896 -2203.8
- Carb.Temp          1   31.896 -2203.8
- PSC                1   31.897 -2203.7
<none>                   31.866 -2203.5
- PSC.Fill           1   31.901 -2203.5
- Carb.Rel           1   31.902 -2203.4
- PSC.CO2            1   31.906 -2203.2
- Fill.Ounces        1   31.912 -2202.8
- Filler.Level       1   31.925 -2202.1
- PC.Volume          1   31.936 -2201.5
- Hyd.Pressure2      1   31.946 -2200.9
- Alch.Rel           1   31.964 -2199.8
- Carb.Flow          1   31.977 -2199.1
- Pressure.Vacuum    1   32.019 -2196.7
- Pressure.Setpoint  1   32.053 -2194.7
- Density            1   32.078 -2193.3
- Brand.CodeD        1   32.095 -2192.2
- Oxygen.Filler      1   32.143 -2189.5
- Balling            1   32.147 -2189.3
- Brand.CodeC        1   32.174 -2187.7
- Balling.Lvl        1   32.240 -2183.9
- Bowl.Setpoint      1   32.279 -2181.7
- Hyd.Pressure3      1   32.303 -2180.3
- Temperature        1   32.561 -2165.6
- Usage.cont         1   32.623 -2162.1
- Carb.Pressure1     1   33.312 -2123.4
- Mnf.Flow           1   34.931 -2035.6

Step:  AIC=-2204.83
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Filler.Level + Temperature + Usage.cont + Carb.Flow + Density + 
    Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Brand.CodeB        1   31.905 -2205.3
- PSC                1   31.908 -2205.1
- Carb.Temp          1   31.909 -2205.0
- Carb.Volume        1   31.909 -2205.0
<none>                   31.878 -2204.8
- PSC.Fill           1   31.914 -2204.7
- Carb.Rel           1   31.915 -2204.7
- PSC.CO2            1   31.917 -2204.6
- Fill.Ounces        1   31.922 -2204.3
- Filler.Level       1   31.938 -2203.3
- PC.Volume          1   31.952 -2202.5
- Hyd.Pressure2      1   31.953 -2202.4
- Alch.Rel           1   31.968 -2201.6
- Carb.Flow          1   32.012 -2199.1
- Pressure.Vacuum    1   32.019 -2198.7
- Pressure.Setpoint  1   32.074 -2195.5
- Density            1   32.088 -2194.7
- Brand.CodeD        1   32.106 -2193.7
- Balling            1   32.148 -2191.2
- Oxygen.Filler      1   32.150 -2191.1
- Brand.CodeC        1   32.178 -2189.5
- Balling.Lvl        1   32.240 -2185.9
- Bowl.Setpoint      1   32.300 -2182.5
- Hyd.Pressure3      1   32.319 -2181.4
- Temperature        1   32.618 -2164.4
- Usage.cont         1   32.640 -2163.1
- Carb.Pressure1     1   33.313 -2125.3
- Mnf.Flow           1   34.932 -2037.6

Step:  AIC=-2205.26
.outcome ~ Brand.CodeC + Brand.CodeD + Carb.Volume + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- PSC                1   31.932 -2205.7
- Carb.Temp          1   31.934 -2205.6
<none>                   31.905 -2205.3
- PSC.Fill           1   31.942 -2205.1
- Fill.Ounces        1   31.943 -2205.1
- PSC.CO2            1   31.943 -2205.1
- Carb.Volume        1   31.949 -2204.7
- Carb.Rel           1   31.949 -2204.7
- Filler.Level       1   31.968 -2203.6
- Hyd.Pressure2      1   31.979 -2203.0
- PC.Volume          1   31.985 -2202.6
- Alch.Rel           1   31.992 -2202.2
- Carb.Flow          1   32.037 -2199.6
- Pressure.Vacuum    1   32.056 -2198.5
- Pressure.Setpoint  1   32.105 -2195.7
- Density            1   32.119 -2194.9
- Brand.CodeD        1   32.131 -2194.2
- Oxygen.Filler      1   32.183 -2191.2
- Balling            1   32.212 -2189.5
- Balling.Lvl        1   32.242 -2187.8
- Bowl.Setpoint      1   32.340 -2182.2
- Hyd.Pressure3      1   32.347 -2181.8
- Usage.cont         1   32.648 -2164.7
- Temperature        1   32.685 -2162.6
- Carb.Pressure1     1   33.345 -2125.6
- Mnf.Flow           1   34.975 -2037.3
- Brand.CodeC        1   35.135 -2028.9

Step:  AIC=-2205.68
.outcome ~ Brand.CodeC + Brand.CodeD + Carb.Volume + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Temp          1   31.963 -2205.9
<none>                   31.932 -2205.7
- Fill.Ounces        1   31.971 -2205.4
- PSC.CO2            1   31.974 -2205.2
- Carb.Rel           1   31.976 -2205.1
- Carb.Volume        1   31.980 -2204.9
- PSC.Fill           1   31.985 -2204.6
- Filler.Level       1   31.994 -2204.1
- Hyd.Pressure2      1   32.005 -2203.4
- Alch.Rel           1   32.017 -2202.8
- PC.Volume          1   32.045 -2201.2
- Carb.Flow          1   32.067 -2199.9
- Pressure.Vacuum    1   32.100 -2198.0
- Pressure.Setpoint  1   32.131 -2196.2
- Density            1   32.142 -2195.6
- Brand.CodeD        1   32.161 -2194.5
- Oxygen.Filler      1   32.214 -2191.4
- Balling            1   32.245 -2189.7
- Balling.Lvl        1   32.275 -2187.9
- Bowl.Setpoint      1   32.367 -2182.7
- Hyd.Pressure3      1   32.380 -2181.9
- Usage.cont         1   32.694 -2164.1
- Temperature        1   32.700 -2163.7
- Carb.Pressure1     1   33.386 -2125.3
- Mnf.Flow           1   35.102 -2032.6
- Brand.CodeC        1   35.198 -2027.5

Step:  AIC=-2205.91
.outcome ~ Brand.CodeC + Brand.CodeD + Carb.Volume + Fill.Ounces + 
    PC.Volume + PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
<none>                   31.963 -2205.9
- Fill.Ounces        1   31.998 -2205.9
- PSC.CO2            1   32.002 -2205.6
- Carb.Rel           1   32.013 -2205.0
- PSC.Fill           1   32.015 -2204.9
- Filler.Level       1   32.023 -2204.4
- Carb.Volume        1   32.032 -2203.9
- Hyd.Pressure2      1   32.040 -2203.4
- Alch.Rel           1   32.044 -2203.2
- PC.Volume          1   32.074 -2201.5
- Carb.Flow          1   32.100 -2200.0
- Pressure.Vacuum    1   32.130 -2198.3
- Pressure.Setpoint  1   32.164 -2196.3
- Density            1   32.166 -2196.2
- Brand.CodeD        1   32.205 -2193.9
- Oxygen.Filler      1   32.246 -2191.6
- Balling            1   32.271 -2190.1
- Balling.Lvl        1   32.301 -2188.4
- Bowl.Setpoint      1   32.391 -2183.3
- Hyd.Pressure3      1   32.414 -2182.0
- Usage.cont         1   32.721 -2164.5
- Temperature        1   32.726 -2164.2
- Carb.Pressure1     1   33.411 -2125.9
- Mnf.Flow           1   35.118 -2033.7
- Brand.CodeC        1   35.241 -2027.3
Start:  AIC=-2210.48
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + Carb.Temp + PSC + 
    PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Fill.Pressure + 
    Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Pressure      1   31.503 -2212.5
- Fill.Pressure      1   31.504 -2212.4
- Filler.Speed       1   31.506 -2212.3
- Carb.Temp          1   31.508 -2212.2
- Carb.Rel           1   31.511 -2212.0
- MFR                1   31.512 -2211.9
- Hyd.Pressure1      1   31.513 -2211.9
- Hyd.Pressure4      1   31.514 -2211.8
- Air.Pressurer      1   31.514 -2211.8
- PSC.CO2            1   31.516 -2211.7
- Carb.Volume        1   31.516 -2211.7
- PSC.Fill           1   31.521 -2211.4
- PSC                1   31.532 -2210.8
<none>                   31.503 -2210.5
- Hyd.Pressure2      1   31.564 -2208.9
- PC.Volume          1   31.572 -2208.5
- Carb.Flow          1   31.590 -2207.4
- Pressure.Vacuum    1   31.591 -2207.3
- Fill.Ounces        1   31.597 -2207.0
- Filler.Level       1   31.625 -2205.4
- Brand.CodeB        1   31.626 -2205.3
- Alch.Rel           1   31.629 -2205.1
- Brand.CodeC        1   31.637 -2204.6
- Pressure.Setpoint  1   31.657 -2203.5
- Balling            1   31.695 -2201.2
- Density            1   31.702 -2200.8
- Brand.CodeD        1   31.712 -2200.3
- Oxygen.Filler      1   31.726 -2199.4
- Hyd.Pressure3      1   31.839 -2192.9
- Balling.Lvl        1   31.892 -2189.8
- Bowl.Setpoint      1   32.050 -2180.6
- Temperature        1   32.060 -2180.1
- Usage.cont         1   32.221 -2170.8
- Carb.Pressure1     1   33.011 -2126.0
- Mnf.Flow           1   34.503 -2044.3

Step:  AIC=-2212.47
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    MFR + Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Air.Pressurer + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Fill.Pressure      1   31.504 -2214.4
- Filler.Speed       1   31.506 -2214.3
- Carb.Rel           1   31.511 -2214.0
- MFR                1   31.512 -2213.9
- Hyd.Pressure1      1   31.514 -2213.9
- Hyd.Pressure4      1   31.514 -2213.8
- Air.Pressurer      1   31.514 -2213.8
- PSC.CO2            1   31.516 -2213.7
- PSC.Fill           1   31.522 -2213.4
- Carb.Volume        1   31.522 -2213.3
- PSC                1   31.532 -2212.8
<none>                   31.503 -2212.5
- Hyd.Pressure2      1   31.564 -2210.9
- Carb.Temp          1   31.565 -2210.8
- PC.Volume          1   31.572 -2210.4
- Carb.Flow          1   31.590 -2209.4
- Pressure.Vacuum    1   31.592 -2209.3
- Fill.Ounces        1   31.597 -2209.0
- Filler.Level       1   31.625 -2207.4
- Brand.CodeB        1   31.626 -2207.3
- Alch.Rel           1   31.630 -2207.1
- Brand.CodeC        1   31.637 -2206.6
- Pressure.Setpoint  1   31.657 -2205.5
- Balling            1   31.695 -2203.2
- Density            1   31.702 -2202.8
- Brand.CodeD        1   31.712 -2202.2
- Oxygen.Filler      1   31.726 -2201.4
- Hyd.Pressure3      1   31.840 -2194.8
- Balling.Lvl        1   31.892 -2191.8
- Bowl.Setpoint      1   32.051 -2182.6
- Temperature        1   32.062 -2182.0
- Usage.cont         1   32.221 -2172.8
- Carb.Pressure1     1   33.014 -2127.8
- Mnf.Flow           1   34.504 -2046.2

Step:  AIC=-2214.41
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + MFR + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Air.Pressurer + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Filler.Speed       1   31.507 -2216.2
- Carb.Rel           1   31.512 -2216.0
- MFR                1   31.513 -2215.9
- Hyd.Pressure1      1   31.514 -2215.8
- Hyd.Pressure4      1   31.515 -2215.8
- Air.Pressurer      1   31.516 -2215.7
- PSC.CO2            1   31.517 -2215.7
- PSC.Fill           1   31.523 -2215.3
- Carb.Volume        1   31.523 -2215.3
- PSC                1   31.532 -2214.8
<none>                   31.504 -2214.4
- Hyd.Pressure2      1   31.566 -2212.8
- Carb.Temp          1   31.567 -2212.8
- PC.Volume          1   31.574 -2212.3
- Carb.Flow          1   31.593 -2211.2
- Pressure.Vacuum    1   31.593 -2211.2
- Fill.Ounces        1   31.597 -2211.0
- Brand.CodeB        1   31.626 -2209.3
- Filler.Level       1   31.631 -2209.0
- Alch.Rel           1   31.632 -2208.9
- Brand.CodeC        1   31.638 -2208.6
- Balling            1   31.700 -2205.0
- Pressure.Setpoint  1   31.700 -2205.0
- Density            1   31.703 -2204.8
- Brand.CodeD        1   31.712 -2204.2
- Oxygen.Filler      1   31.727 -2203.4
- Hyd.Pressure3      1   31.858 -2195.8
- Balling.Lvl        1   31.897 -2193.5
- Bowl.Setpoint      1   32.068 -2183.6
- Temperature        1   32.073 -2183.3
- Usage.cont         1   32.221 -2174.8
- Carb.Pressure1     1   33.016 -2129.8
- Mnf.Flow           1   34.504 -2048.2

Step:  AIC=-2216.23
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Rel           1   31.514 -2217.8
- Hyd.Pressure4      1   31.515 -2217.8
- Hyd.Pressure1      1   31.516 -2217.7
- Air.Pressurer      1   31.519 -2217.6
- PSC.CO2            1   31.520 -2217.5
- PSC.Fill           1   31.525 -2217.2
- Carb.Volume        1   31.526 -2217.2
- MFR                1   31.526 -2217.1
- PSC                1   31.535 -2216.6
<none>                   31.507 -2216.2
- Hyd.Pressure2      1   31.567 -2214.7
- Carb.Temp          1   31.570 -2214.5
- PC.Volume          1   31.579 -2214.0
- Pressure.Vacuum    1   31.593 -2213.2
- Fill.Ounces        1   31.599 -2212.8
- Alch.Rel           1   31.632 -2210.9
- Brand.CodeB        1   31.638 -2210.6
- Carb.Flow          1   31.638 -2210.6
- Filler.Level       1   31.638 -2210.6
- Brand.CodeC        1   31.639 -2210.5
- Balling            1   31.702 -2206.8
- Density            1   31.708 -2206.5
- Pressure.Setpoint  1   31.708 -2206.5
- Brand.CodeD        1   31.713 -2206.2
- Oxygen.Filler      1   31.732 -2205.1
- Hyd.Pressure3      1   31.866 -2197.3
- Balling.Lvl        1   31.899 -2195.4
- Bowl.Setpoint      1   32.096 -2184.0
- Temperature        1   32.102 -2183.6
- Usage.cont         1   32.224 -2176.7
- Carb.Pressure1     1   33.027 -2131.1
- Mnf.Flow           1   34.534 -2048.6

Step:  AIC=-2217.81
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + 
    Alch.Rel + Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure4      1   31.522 -2219.3
- Hyd.Pressure1      1   31.524 -2219.2
- Carb.Volume        1   31.527 -2219.1
- Air.Pressurer      1   31.527 -2219.1
- PSC.CO2            1   31.528 -2219.0
- PSC.Fill           1   31.532 -2218.8
- MFR                1   31.534 -2218.7
- PSC                1   31.543 -2218.2
<none>                   31.514 -2217.8
- Hyd.Pressure2      1   31.573 -2216.3
- Carb.Temp          1   31.582 -2215.9
- PC.Volume          1   31.586 -2215.6
- Pressure.Vacuum    1   31.600 -2214.8
- Fill.Ounces        1   31.614 -2214.0
- Brand.CodeC        1   31.642 -2212.4
- Filler.Level       1   31.642 -2212.3
- Carb.Flow          1   31.643 -2212.3
- Alch.Rel           1   31.653 -2211.7
- Brand.CodeB        1   31.654 -2211.6
- Density            1   31.709 -2208.4
- Pressure.Setpoint  1   31.714 -2208.1
- Brand.CodeD        1   31.721 -2207.7
- Balling            1   31.723 -2207.6
- Oxygen.Filler      1   31.739 -2206.7
- Hyd.Pressure3      1   31.875 -2198.8
- Balling.Lvl        1   31.958 -2194.0
- Bowl.Setpoint      1   32.102 -2185.7
- Temperature        1   32.103 -2185.6
- Usage.cont         1   32.246 -2177.4
- Carb.Pressure1     1   33.055 -2131.5
- Mnf.Flow           1   34.562 -2049.1

Step:  AIC=-2219.34
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Filler.Level + Temperature + Usage.cont + 
    Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + Alch.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure1      1   31.533 -2220.7
- Carb.Volume        1   31.535 -2220.6
- Air.Pressurer      1   31.535 -2220.6
- PSC.CO2            1   31.535 -2220.6
- MFR                1   31.536 -2220.6
- PSC.Fill           1   31.541 -2220.3
- PSC                1   31.550 -2219.7
<none>                   31.522 -2219.3
- Hyd.Pressure2      1   31.584 -2217.7
- Carb.Temp          1   31.590 -2217.4
- PC.Volume          1   31.592 -2217.2
- Pressure.Vacuum    1   31.619 -2215.7
- Fill.Ounces        1   31.625 -2215.3
- Carb.Flow          1   31.643 -2214.3
- Filler.Level       1   31.645 -2214.2
- Brand.CodeB        1   31.655 -2213.6
- Alch.Rel           1   31.662 -2213.2
- Brand.CodeC        1   31.664 -2213.1
- Density            1   31.718 -2209.9
- Pressure.Setpoint  1   31.719 -2209.9
- Brand.CodeD        1   31.725 -2209.5
- Oxygen.Filler      1   31.744 -2208.4
- Balling            1   31.758 -2207.6
- Hyd.Pressure3      1   31.884 -2200.3
- Balling.Lvl        1   31.995 -2193.8
- Bowl.Setpoint      1   32.102 -2187.7
- Temperature        1   32.104 -2187.5
- Usage.cont         1   32.259 -2178.7
- Carb.Pressure1     1   33.088 -2131.7
- Mnf.Flow           1   34.585 -2049.9

Step:  AIC=-2220.74
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Filler.Level + Temperature + Usage.cont + Carb.Flow + Density + 
    MFR + Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Air.Pressurer + Alch.Rel + Balling.Lvl

                    Df Deviance     AIC
- MFR                1   31.543 -2222.2
- PSC.CO2            1   31.545 -2222.0
- Carb.Volume        1   31.546 -2222.0
- Air.Pressurer      1   31.548 -2221.9
- PSC.Fill           1   31.550 -2221.7
- PSC                1   31.562 -2221.0
<none>                   31.533 -2220.7
- Hyd.Pressure2      1   31.584 -2219.7
- PC.Volume          1   31.594 -2219.2
- Carb.Temp          1   31.598 -2218.9
- Pressure.Vacuum    1   31.622 -2217.5
- Fill.Ounces        1   31.633 -2216.8
- Filler.Level       1   31.652 -2215.8
- Carb.Flow          1   31.654 -2215.7
- Brand.CodeB        1   31.661 -2215.2
- Alch.Rel           1   31.676 -2214.3
- Brand.CodeC        1   31.677 -2214.3
- Pressure.Setpoint  1   31.725 -2211.5
- Density            1   31.730 -2211.2
- Brand.CodeD        1   31.732 -2211.1
- Oxygen.Filler      1   31.756 -2209.7
- Balling            1   31.773 -2208.7
- Hyd.Pressure3      1   31.901 -2201.3
- Balling.Lvl        1   32.007 -2195.1
- Temperature        1   32.113 -2189.0
- Bowl.Setpoint      1   32.121 -2188.6
- Usage.cont         1   32.283 -2179.3
- Carb.Pressure1     1   33.088 -2133.7
- Mnf.Flow           1   34.596 -2051.3

Step:  AIC=-2222.16
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Filler.Level + Temperature + Usage.cont + Carb.Flow + Density + 
    Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Air.Pressurer + Alch.Rel + Balling.Lvl

                    Df Deviance     AIC
- PSC.CO2            1   31.554 -2223.5
- Carb.Volume        1   31.555 -2223.4
- Air.Pressurer      1   31.557 -2223.3
- PSC.Fill           1   31.560 -2223.1
- PSC                1   31.571 -2222.5
<none>                   31.543 -2222.2
- Hyd.Pressure2      1   31.590 -2221.4
- PC.Volume          1   31.608 -2220.3
- Carb.Temp          1   31.609 -2220.3
- Pressure.Vacuum    1   31.622 -2219.5
- Fill.Ounces        1   31.641 -2218.4
- Filler.Level       1   31.663 -2217.1
- Brand.CodeB        1   31.676 -2216.4
- Alch.Rel           1   31.678 -2216.3
- Brand.CodeC        1   31.681 -2216.0
- Carb.Flow          1   31.682 -2216.0
- Density            1   31.738 -2212.7
- Brand.CodeD        1   31.740 -2212.6
- Pressure.Setpoint  1   31.744 -2212.4
- Oxygen.Filler      1   31.762 -2211.3
- Balling            1   31.774 -2210.6
- Hyd.Pressure3      1   31.914 -2202.5
- Balling.Lvl        1   32.009 -2197.0
- Bowl.Setpoint      1   32.145 -2189.2
- Temperature        1   32.153 -2188.7
- Usage.cont         1   32.298 -2180.4
- Carb.Pressure1     1   33.088 -2135.7
- Mnf.Flow           1   34.596 -2053.3

Step:  AIC=-2223.47
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Air.Pressurer + Alch.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Volume        1   31.566 -2224.8
- Air.Pressurer      1   31.568 -2224.6
- PSC.Fill           1   31.578 -2224.1
- PSC                1   31.585 -2223.7
<none>                   31.554 -2223.5
- Hyd.Pressure2      1   31.600 -2222.8
- PC.Volume          1   31.616 -2221.8
- Carb.Temp          1   31.619 -2221.7
- Pressure.Vacuum    1   31.634 -2220.8
- Fill.Ounces        1   31.653 -2219.7
- Filler.Level       1   31.673 -2218.5
- Brand.CodeB        1   31.688 -2217.7
- Carb.Flow          1   31.693 -2217.4
- Brand.CodeC        1   31.694 -2217.3
- Alch.Rel           1   31.694 -2217.3
- Brand.CodeD        1   31.748 -2214.2
- Density            1   31.752 -2213.9
- Pressure.Setpoint  1   31.760 -2213.5
- Oxygen.Filler      1   31.776 -2212.5
- Balling            1   31.785 -2212.0
- Hyd.Pressure3      1   31.920 -2204.2
- Balling.Lvl        1   32.017 -2198.5
- Bowl.Setpoint      1   32.154 -2190.6
- Temperature        1   32.170 -2189.7
- Usage.cont         1   32.311 -2181.6
- Carb.Pressure1     1   33.099 -2137.1
- Mnf.Flow           1   34.614 -2054.3

Step:  AIC=-2224.76
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC + PSC.Fill + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + 
    Alch.Rel + Balling.Lvl

                    Df Deviance     AIC
- Air.Pressurer      1   31.584 -2225.8
- PSC.Fill           1   31.590 -2225.4
- PSC                1   31.598 -2224.9
<none>                   31.566 -2224.8
- Hyd.Pressure2      1   31.614 -2223.9
- PC.Volume          1   31.628 -2223.1
- Pressure.Vacuum    1   31.644 -2222.2
- Carb.Temp          1   31.646 -2222.1
- Fill.Ounces        1   31.679 -2220.2
- Filler.Level       1   31.680 -2220.1
- Brand.CodeC        1   31.696 -2219.2
- Alch.Rel           1   31.708 -2218.5
- Carb.Flow          1   31.713 -2218.2
- Brand.CodeB        1   31.715 -2218.1
- Brand.CodeD        1   31.748 -2216.1
- Density            1   31.771 -2214.8
- Pressure.Setpoint  1   31.779 -2214.4
- Oxygen.Filler      1   31.784 -2214.1
- Balling            1   31.798 -2213.2
- Hyd.Pressure3      1   31.944 -2204.8
- Balling.Lvl        1   32.027 -2200.0
- Bowl.Setpoint      1   32.157 -2192.5
- Temperature        1   32.179 -2191.2
- Usage.cont         1   32.333 -2182.4
- Carb.Pressure1     1   33.108 -2138.6
- Mnf.Flow           1   34.636 -2055.2

Step:  AIC=-2225.75
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC + PSC.Fill + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- PSC.Fill           1   31.606 -2226.5
- PSC                1   31.618 -2225.8
<none>                   31.584 -2225.8
- Hyd.Pressure2      1   31.622 -2225.5
- PC.Volume          1   31.644 -2224.2
- Carb.Temp          1   31.662 -2223.2
- Pressure.Vacuum    1   31.673 -2222.5
- Filler.Level       1   31.699 -2221.0
- Fill.Ounces        1   31.701 -2220.9
- Brand.CodeC        1   31.711 -2220.3
- Carb.Flow          1   31.727 -2219.4
- Alch.Rel           1   31.729 -2219.3
- Brand.CodeB        1   31.733 -2219.0
- Brand.CodeD        1   31.762 -2217.4
- Density            1   31.790 -2215.7
- Pressure.Setpoint  1   31.804 -2214.9
- Balling            1   31.814 -2214.3
- Oxygen.Filler      1   31.817 -2214.2
- Hyd.Pressure3      1   31.944 -2206.8
- Balling.Lvl        1   32.045 -2200.9
- Bowl.Setpoint      1   32.191 -2192.6
- Temperature        1   32.200 -2192.0
- Usage.cont         1   32.337 -2184.2
- Carb.Pressure1     1   33.110 -2140.5
- Mnf.Flow           1   34.645 -2056.7

Step:  AIC=-2226.47
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
<none>                   31.606 -2226.5
- Hyd.Pressure2      1   31.643 -2226.3
- PSC                1   31.653 -2225.7
- PC.Volume          1   31.660 -2225.3
- Carb.Temp          1   31.683 -2223.9
- Pressure.Vacuum    1   31.691 -2223.4
- Filler.Level       1   31.722 -2221.7
- Fill.Ounces        1   31.728 -2221.3
- Brand.CodeC        1   31.735 -2220.9
- Carb.Flow          1   31.742 -2220.5
- Alch.Rel           1   31.751 -2220.0
- Brand.CodeB        1   31.756 -2219.7
- Brand.CodeD        1   31.785 -2218.0
- Density            1   31.811 -2216.5
- Pressure.Setpoint  1   31.828 -2215.5
- Oxygen.Filler      1   31.834 -2215.2
- Balling            1   31.834 -2215.1
- Hyd.Pressure3      1   31.966 -2207.5
- Balling.Lvl        1   32.063 -2201.9
- Bowl.Setpoint      1   32.206 -2193.7
- Temperature        1   32.226 -2192.5
- Usage.cont         1   32.355 -2185.1
- Carb.Pressure1     1   33.133 -2141.2
- Mnf.Flow           1   34.672 -2057.3
Start:  AIC=-2475.57
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Pressure + Carb.Temp + PSC + 
    PSC.Fill + PSC.CO2 + Mnf.Flow + Carb.Pressure1 + Fill.Pressure + 
    Hyd.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + MFR + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Air.Pressurer + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Pressure      1   34.830 -2477.6
- Carb.Temp          1   34.833 -2477.3
- Fill.Pressure      1   34.834 -2477.3
- MFR                1   34.834 -2477.3
- Air.Pressurer      1   34.834 -2477.3
- Hyd.Pressure4      1   34.838 -2477.0
- Filler.Speed       1   34.844 -2476.7
- Hyd.Pressure1      1   34.846 -2476.6
- Carb.Volume        1   34.850 -2476.3
- PSC.CO2            1   34.859 -2475.8
- PSC.Fill           1   34.862 -2475.7
- PSC                1   34.863 -2475.6
<none>                   34.829 -2475.6
- Carb.Rel           1   34.867 -2475.4
- PC.Volume          1   34.900 -2473.4
- Carb.Flow          1   34.907 -2473.0
- Brand.CodeB        1   34.909 -2472.9
- Fill.Ounces        1   34.909 -2472.9
- Hyd.Pressure2      1   34.919 -2472.3
- Filler.Level       1   34.932 -2471.5
- Alch.Rel           1   34.963 -2469.7
- Pressure.Vacuum    1   34.989 -2468.2
- Pressure.Setpoint  1   34.992 -2468.0
- Brand.CodeD        1   35.034 -2465.6
- Brand.CodeC        1   35.039 -2465.3
- Density            1   35.082 -2462.7
- Balling            1   35.091 -2462.2
- Oxygen.Filler      1   35.135 -2459.6
- Hyd.Pressure3      1   35.223 -2454.5
- Balling.Lvl        1   35.270 -2451.7
- Bowl.Setpoint      1   35.352 -2447.0
- Temperature        1   35.481 -2439.5
- Usage.cont         1   35.576 -2434.0
- Carb.Pressure1     1   36.487 -2382.0
- Mnf.Flow           1   38.310 -2281.8

Step:  AIC=-2477.56
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Fill.Pressure + Hyd.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + 
    Filler.Speed + Temperature + Usage.cont + Carb.Flow + Density + 
    MFR + Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Air.Pressurer + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Fill.Pressure      1   34.834 -2479.3
- MFR                1   34.834 -2479.3
- Air.Pressurer      1   34.834 -2479.3
- Hyd.Pressure4      1   34.838 -2479.0
- Filler.Speed       1   34.844 -2478.7
- Hyd.Pressure1      1   34.846 -2478.6
- PSC.CO2            1   34.859 -2477.8
- Carb.Volume        1   34.861 -2477.7
- PSC.Fill           1   34.862 -2477.7
- PSC                1   34.863 -2477.6
<none>                   34.830 -2477.6
- Carb.Rel           1   34.867 -2477.3
- Carb.Temp          1   34.879 -2476.6
- PC.Volume          1   34.901 -2475.4
- Carb.Flow          1   34.907 -2475.0
- Brand.CodeB        1   34.909 -2474.9
- Fill.Ounces        1   34.909 -2474.9
- Hyd.Pressure2      1   34.919 -2474.3
- Filler.Level       1   34.932 -2473.5
- Alch.Rel           1   34.964 -2471.7
- Pressure.Vacuum    1   34.989 -2470.2
- Pressure.Setpoint  1   34.992 -2470.0
- Brand.CodeD        1   35.034 -2467.6
- Brand.CodeC        1   35.039 -2467.2
- Density            1   35.082 -2464.7
- Balling            1   35.091 -2464.2
- Oxygen.Filler      1   35.136 -2461.6
- Hyd.Pressure3      1   35.224 -2456.4
- Balling.Lvl        1   35.270 -2453.7
- Bowl.Setpoint      1   35.352 -2449.0
- Temperature        1   35.483 -2441.4
- Usage.cont         1   35.576 -2436.0
- Carb.Pressure1     1   36.491 -2383.8
- Mnf.Flow           1   38.312 -2283.7

Step:  AIC=-2479.31
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + MFR + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Air.Pressurer + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- MFR                1   34.837 -2481.1
- Air.Pressurer      1   34.838 -2481.0
- Hyd.Pressure4      1   34.842 -2480.8
- Hyd.Pressure1      1   34.848 -2480.4
- Filler.Speed       1   34.849 -2480.4
- PSC.CO2            1   34.863 -2479.6
- Carb.Volume        1   34.865 -2479.5
- PSC.Fill           1   34.866 -2479.4
- PSC                1   34.867 -2479.4
<none>                   34.834 -2479.3
- Carb.Rel           1   34.870 -2479.2
- Carb.Temp          1   34.884 -2478.3
- PC.Volume          1   34.908 -2476.9
- Fill.Ounces        1   34.912 -2476.7
- Brand.CodeB        1   34.913 -2476.7
- Carb.Flow          1   34.914 -2476.6
- Hyd.Pressure2      1   34.926 -2475.9
- Filler.Level       1   34.944 -2474.8
- Alch.Rel           1   34.970 -2473.3
- Pressure.Vacuum    1   34.995 -2471.8
- Pressure.Setpoint  1   35.025 -2470.0
- Brand.CodeD        1   35.034 -2469.5
- Brand.CodeC        1   35.044 -2469.0
- Density            1   35.085 -2466.6
- Balling            1   35.103 -2465.5
- Oxygen.Filler      1   35.139 -2463.4
- Hyd.Pressure3      1   35.252 -2456.8
- Balling.Lvl        1   35.282 -2455.0
- Bowl.Setpoint      1   35.378 -2449.4
- Temperature        1   35.505 -2442.1
- Usage.cont         1   35.577 -2437.9
- Carb.Pressure1     1   36.491 -2385.8
- Mnf.Flow           1   38.312 -2285.7

Step:  AIC=-2481.11
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Air.Pressurer + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Air.Pressurer      1   34.842 -2482.8
- Hyd.Pressure4      1   34.844 -2482.7
- Hyd.Pressure1      1   34.851 -2482.3
- PSC.CO2            1   34.865 -2481.5
- Filler.Speed       1   34.866 -2481.4
- Carb.Volume        1   34.869 -2481.2
- PSC.Fill           1   34.870 -2481.2
- PSC                1   34.870 -2481.2
<none>                   34.837 -2481.1
- Carb.Rel           1   34.874 -2480.9
- Carb.Temp          1   34.887 -2480.2
- PC.Volume          1   34.911 -2478.8
- Brand.CodeB        1   34.914 -2478.6
- Carb.Flow          1   34.915 -2478.5
- Fill.Ounces        1   34.915 -2478.5
- Hyd.Pressure2      1   34.928 -2477.8
- Filler.Level       1   34.946 -2476.7
- Alch.Rel           1   34.971 -2475.2
- Pressure.Vacuum    1   34.996 -2473.8
- Pressure.Setpoint  1   35.030 -2471.8
- Brand.CodeD        1   35.035 -2471.5
- Brand.CodeC        1   35.051 -2470.5
- Density            1   35.087 -2468.4
- Balling            1   35.103 -2467.5
- Oxygen.Filler      1   35.140 -2465.3
- Hyd.Pressure3      1   35.255 -2458.6
- Balling.Lvl        1   35.282 -2457.0
- Bowl.Setpoint      1   35.379 -2451.4
- Temperature        1   35.512 -2443.7
- Usage.cont         1   35.596 -2438.8
- Carb.Pressure1     1   36.496 -2387.5
- Mnf.Flow           1   38.318 -2287.4

Step:  AIC=-2482.84
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Hyd.Pressure4 + Filler.Level + Filler.Speed + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure4      1   34.849 -2484.4
- Hyd.Pressure1      1   34.857 -2483.9
- PSC.CO2            1   34.869 -2483.2
- Filler.Speed       1   34.871 -2483.1
- PSC.Fill           1   34.874 -2482.9
<none>                   34.842 -2482.8
- PSC                1   34.876 -2482.8
- Carb.Volume        1   34.877 -2482.8
- Carb.Rel           1   34.881 -2482.5
- Carb.Temp          1   34.891 -2481.9
- PC.Volume          1   34.916 -2480.5
- Carb.Flow          1   34.918 -2480.3
- Brand.CodeB        1   34.918 -2480.3
- Fill.Ounces        1   34.921 -2480.2
- Hyd.Pressure2      1   34.928 -2479.7
- Filler.Level       1   34.952 -2478.3
- Alch.Rel           1   34.977 -2476.9
- Pressure.Vacuum    1   35.011 -2474.9
- Pressure.Setpoint  1   35.038 -2473.3
- Brand.CodeD        1   35.039 -2473.2
- Brand.CodeC        1   35.056 -2472.3
- Density            1   35.093 -2470.1
- Balling            1   35.107 -2469.3
- Oxygen.Filler      1   35.154 -2466.5
- Hyd.Pressure3      1   35.258 -2460.4
- Balling.Lvl        1   35.285 -2458.8
- Bowl.Setpoint      1   35.394 -2452.5
- Temperature        1   35.519 -2445.3
- Usage.cont         1   35.596 -2440.8
- Carb.Pressure1     1   36.496 -2389.5
- Mnf.Flow           1   38.318 -2289.4

Step:  AIC=-2484.42
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure1 + Hyd.Pressure2 + 
    Hyd.Pressure3 + Filler.Level + Filler.Speed + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Hyd.Pressure1      1   34.864 -2485.5
- Filler.Speed       1   34.871 -2485.1
- PSC.CO2            1   34.876 -2484.8
- PSC.Fill           1   34.881 -2484.5
- PSC                1   34.882 -2484.4
<none>                   34.849 -2484.4
- Carb.Volume        1   34.883 -2484.4
- Carb.Rel           1   34.888 -2484.1
- Carb.Temp          1   34.898 -2483.5
- Brand.CodeB        1   34.921 -2482.2
- PC.Volume          1   34.922 -2482.1
- Carb.Flow          1   34.924 -2482.0
- Fill.Ounces        1   34.930 -2481.6
- Hyd.Pressure2      1   34.937 -2481.2
- Filler.Level       1   34.956 -2480.1
- Alch.Rel           1   34.984 -2478.5
- Pressure.Vacuum    1   35.027 -2476.0
- Brand.CodeD        1   35.042 -2475.0
- Pressure.Setpoint  1   35.044 -2474.9
- Brand.CodeC        1   35.071 -2473.3
- Density            1   35.104 -2471.4
- Balling            1   35.131 -2469.8
- Oxygen.Filler      1   35.160 -2468.2
- Hyd.Pressure3      1   35.268 -2461.9
- Balling.Lvl        1   35.311 -2459.4
- Bowl.Setpoint      1   35.395 -2454.5
- Temperature        1   35.523 -2447.0
- Usage.cont         1   35.599 -2442.6
- Carb.Pressure1     1   36.508 -2390.8
- Mnf.Flow           1   38.323 -2291.2

Step:  AIC=-2485.51
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Filler.Level + Filler.Speed + Temperature + Usage.cont + 
    Carb.Flow + Density + Balling + Pressure.Vacuum + Oxygen.Filler + 
    Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + Carb.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
- Filler.Speed       1   34.882 -2486.5
- PSC.CO2            1   34.892 -2485.9
- PSC.Fill           1   34.895 -2485.7
<none>                   34.864 -2485.5
- PSC                1   34.900 -2485.4
- Carb.Volume        1   34.901 -2485.4
- Carb.Rel           1   34.906 -2485.1
- Carb.Temp          1   34.911 -2484.8
- PC.Volume          1   34.926 -2483.9
- Brand.CodeB        1   34.934 -2483.4
- Hyd.Pressure2      1   34.937 -2483.2
- Carb.Flow          1   34.943 -2482.9
- Fill.Ounces        1   34.944 -2482.8
- Filler.Level       1   34.968 -2481.4
- Alch.Rel           1   35.004 -2479.3
- Pressure.Vacuum    1   35.029 -2477.8
- Brand.CodeD        1   35.055 -2476.3
- Pressure.Setpoint  1   35.055 -2476.3
- Brand.CodeC        1   35.089 -2474.3
- Density            1   35.122 -2472.4
- Balling            1   35.149 -2470.8
- Oxygen.Filler      1   35.182 -2468.9
- Hyd.Pressure3      1   35.292 -2462.5
- Balling.Lvl        1   35.326 -2460.5
- Bowl.Setpoint      1   35.426 -2454.7
- Temperature        1   35.540 -2448.1
- Usage.cont         1   35.621 -2443.4
- Carb.Pressure1     1   36.509 -2392.8
- Mnf.Flow           1   38.334 -2292.6

Step:  AIC=-2486.47
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + PSC.CO2 + 
    Mnf.Flow + Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + 
    Filler.Level + Temperature + Usage.cont + Carb.Flow + Density + 
    Balling + Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + 
    Pressure.Setpoint + Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- PSC.CO2            1   34.909 -2486.9
- PSC.Fill           1   34.913 -2486.6
- PSC                1   34.915 -2486.5
<none>                   34.882 -2486.5
- Carb.Volume        1   34.917 -2486.4
- Carb.Rel           1   34.923 -2486.1
- Carb.Temp          1   34.930 -2485.6
- Hyd.Pressure2      1   34.948 -2484.6
- PC.Volume          1   34.952 -2484.4
- Fill.Ounces        1   34.958 -2484.0
- Brand.CodeB        1   34.969 -2483.3
- Filler.Level       1   34.996 -2481.8
- Alch.Rel           1   35.008 -2481.1
- Pressure.Vacuum    1   35.030 -2479.8
- Carb.Flow          1   35.045 -2478.9
- Brand.CodeD        1   35.076 -2477.1
- Pressure.Setpoint  1   35.089 -2476.3
- Brand.CodeC        1   35.090 -2476.2
- Density            1   35.141 -2473.3
- Balling            1   35.154 -2472.5
- Oxygen.Filler      1   35.200 -2469.8
- Hyd.Pressure3      1   35.323 -2462.7
- Balling.Lvl        1   35.328 -2462.4
- Bowl.Setpoint      1   35.501 -2452.3
- Usage.cont         1   35.623 -2445.3
- Temperature        1   35.634 -2444.7
- Carb.Pressure1     1   36.513 -2394.6
- Mnf.Flow           1   38.353 -2293.5

Step:  AIC=-2486.86
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Carb.Volume + 
    Fill.Ounces + PC.Volume + Carb.Temp + PSC + PSC.Fill + Mnf.Flow + 
    Carb.Pressure1 + Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + 
    Temperature + Usage.cont + Carb.Flow + Density + Balling + 
    Pressure.Vacuum + Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + 
    Alch.Rel + Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Volume        1   34.942 -2486.9
<none>                   34.909 -2486.9
- PSC                1   34.945 -2486.7
- Carb.Rel           1   34.950 -2486.4
- PSC.Fill           1   34.953 -2486.3
- Carb.Temp          1   34.955 -2486.1
- Hyd.Pressure2      1   34.971 -2485.2
- PC.Volume          1   34.974 -2485.1
- Fill.Ounces        1   34.984 -2484.4
- Brand.CodeB        1   34.996 -2483.8
- Filler.Level       1   35.020 -2482.3
- Alch.Rel           1   35.042 -2481.1
- Pressure.Vacuum    1   35.057 -2480.2
- Carb.Flow          1   35.069 -2479.5
- Brand.CodeD        1   35.096 -2477.9
- Brand.CodeC        1   35.120 -2476.5
- Pressure.Setpoint  1   35.122 -2476.4
- Density            1   35.170 -2473.6
- Balling            1   35.180 -2473.0
- Oxygen.Filler      1   35.231 -2470.0
- Hyd.Pressure3      1   35.341 -2463.6
- Balling.Lvl        1   35.350 -2463.1
- Bowl.Setpoint      1   35.523 -2453.1
- Usage.cont         1   35.650 -2445.7
- Temperature        1   35.668 -2444.7
- Carb.Pressure1     1   36.537 -2395.2
- Mnf.Flow           1   38.387 -2293.7

Step:  AIC=-2486.91
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC + PSC.Fill + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Carb.Rel + Balling.Lvl

                    Df Deviance     AIC
- Carb.Rel           1   34.963 -2487.7
<none>                   34.942 -2486.9
- PSC                1   34.982 -2486.6
- PSC.Fill           1   34.985 -2486.4
- Hyd.Pressure2      1   35.004 -2485.3
- PC.Volume          1   35.004 -2485.3
- Carb.Temp          1   35.012 -2484.8
- Fill.Ounces        1   35.041 -2483.1
- Filler.Level       1   35.043 -2483.0
- Brand.CodeB        1   35.054 -2482.4
- Pressure.Vacuum    1   35.087 -2480.4
- Alch.Rel           1   35.088 -2480.4
- Brand.CodeD        1   35.102 -2479.6
- Carb.Flow          1   35.112 -2479.0
- Brand.CodeC        1   35.128 -2478.0
- Pressure.Setpoint  1   35.164 -2475.9
- Density            1   35.206 -2473.5
- Balling            1   35.226 -2472.3
- Oxygen.Filler      1   35.257 -2470.5
- Hyd.Pressure3      1   35.387 -2462.9
- Balling.Lvl        1   35.405 -2461.9
- Bowl.Setpoint      1   35.542 -2454.0
- Temperature        1   35.688 -2445.5
- Usage.cont         1   35.698 -2444.9
- Carb.Pressure1     1   36.578 -2394.9
- Mnf.Flow           1   38.453 -2292.2

Step:  AIC=-2487.69
.outcome ~ Brand.CodeB + Brand.CodeC + Brand.CodeD + Fill.Ounces + 
    PC.Volume + Carb.Temp + PSC + PSC.Fill + Mnf.Flow + Carb.Pressure1 + 
    Hyd.Pressure2 + Hyd.Pressure3 + Filler.Level + Temperature + 
    Usage.cont + Carb.Flow + Density + Balling + Pressure.Vacuum + 
    Oxygen.Filler + Bowl.Setpoint + Pressure.Setpoint + Alch.Rel + 
    Balling.Lvl

                    Df Deviance     AIC
<none>                   34.963 -2487.7
- PSC                1   35.003 -2487.3
- PSC.Fill           1   35.006 -2487.2
- Hyd.Pressure2      1   35.021 -2486.3
- PC.Volume          1   35.025 -2486.1
- Carb.Temp          1   35.032 -2485.6
- Filler.Level       1   35.062 -2483.9
- Fill.Ounces        1   35.067 -2483.6
- Brand.CodeB        1   35.080 -2482.8
- Pressure.Vacuum    1   35.108 -2481.2
- Carb.Flow          1   35.126 -2480.1
- Alch.Rel           1   35.127 -2480.1
- Brand.CodeD        1   35.140 -2479.3
- Brand.CodeC        1   35.148 -2478.9
- Pressure.Setpoint  1   35.181 -2476.9
- Density            1   35.212 -2475.1
- Balling            1   35.270 -2471.7
- Oxygen.Filler      1   35.280 -2471.2
- Hyd.Pressure3      1   35.405 -2463.9
- Balling.Lvl        1   35.502 -2458.3
- Bowl.Setpoint      1   35.569 -2454.4
- Temperature        1   35.691 -2447.3
- Usage.cont         1   35.727 -2445.3
- Carb.Pressure1     1   36.624 -2394.3
- Mnf.Flow           1   38.498 -2291.8
lm_fit
Generalized Linear Model with Stepwise Feature Selection 

2055 samples
  32 predictor

No pre-processing
Resampling: Cross-Validated (10 fold) 
Summary of sample sizes: 1849, 1850, 1849, 1850, 1849, 1849, ... 
Resampling results:

  RMSE      Rsquared   MAE      
  0.134204  0.3982181  0.1040103
varImp(lm_fit)
loess r-squared variable importance

  only 20 most important variables shown (out of 32)

                  Overall
Oxygen.Filler      100.00
Filler.Level        74.95
Mnf.Flow            63.59
Filler.Speed        61.64
Balling             58.82
Bowl.Setpoint       53.25
Hyd.Pressure3       51.18
Hyd.Pressure2       48.47
Hyd.Pressure1       48.38
Fill.Pressure       47.50
Usage.cont          46.35
Pressure.Setpoint   39.28
Density             34.55
Carb.Pressure1      32.96
Brand.Code          32.26
Balling.Lvl         31.53
Carb.Rel            30.69
Alch.Rel            24.56
Carb.Flow           24.41
Pressure.Vacuum     24.40
lm_predictions <- predict(lm_fit, test_df_imputed)
postResample(pred = lm_predictions, obs = test_df_imputed$PH)
     RMSE  Rsquared       MAE 
0.1394404 0.3521655 0.1063868