Untitled

## [1] 74.7

## Warning in plot.window(xlim, ylim, "", ...): "weight" 不是一個繪圖參數

## Warning in plot.window(xlim, ylim, "", ...): "high" 不是一個繪圖參數

## Warning in title(main = main, sub = sub, xlab = xlab, ylab = ylab, ...):
## "weight" 不是一個繪圖參數

## Warning in title(main = main, sub = sub, xlab = xlab, ylab = ylab, ...): "high"
## 不是一個繪圖參數

## Warning in axis(1, ...): "weight" 不是一個繪圖參數

## Warning in axis(1, ...): "high" 不是一個繪圖參數

## Warning in axis(2, at = yt, ...): "weight" 不是一個繪圖參數

## Warning in axis(2, at = yt, ...): "high" 不是一個繪圖參數