Statistical Analysis

This text is focusing on the basic statistic analysis of maximum daily ozone trend in HONG KONG areas!

We can get the pollution data from HongKong pollution stations and the meteorological data from meteorological stations.

Download the data from SQL and parepare the data for analysis

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TSUEN WAN(TW) station

##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##     3.0    26.0    48.0    53.9    73.0   323.0

• 3212 samples that happend between 0 o’clock to 10 o’clock;

• 3825 samples that between 11 o’clock to 24 o’clock;

• 110 days that exceed the limitation 160 ug/m3(the imitation that the HK goverment set);

• 6927 days that did not exceed 160 ug/m3;

Tai Po(TP) station

Tai Po is a general sits in the unban area

##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##     2.0    37.0    66.0    69.7    96.0   360.0

• 1467 samples that happend between 0 o’clock to 10 o’clock;

• 4864 samples that happend between 11 o’clock to 24 o’clock;

• 138 out of 6331 days exceeds the 160 ug/m3;

• 6193 out of 6331 days did not exceed the 160 ug/m3

Sham Shui Po(SSP)

SSP is a general sits in the unban area

##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##     3.0    28.0    49.0    55.2    74.0   302.0

• 2834 samples that happend between 0 o’clock to 10 o’ clock;

• 2949 samples that happend between 11 o’clock to 24 o’clock;

• 100 days that exceed 160 ug/m2;

• 5683 days that did not exceed 160 ug/m2

Mong Kok (MK) station

Mong Kok(MK) is a roadside monitorning station

##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##     2.0     7.0    17.0    23.3    34.2   157.0

• 537 samples that happend between 0 o’clock to 10 o’clock;

• 451 samples that happend between 11 o’clock to 24 o’clock;

• No days that the maximum ozone level exceed 160 ug/m2.

TUNG CHUNG(TC)

Tung Chung(TC) is in the new developed town under a rapid growth

##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##       3      46      72      85     105     395

• 5449 records

• 1507 samples that happend between 0 o’clock to 10 o’clock;

• 3942 samples that happend between 11 o’clock to 24 o’clock;

• 477 days that exceed 160 ug/m3;

• 4972 days that did not exceed 160 ug/m3

The days that exceeds and unexceed the limitation corresponding to different stations