Monday, March 24, 2008

Rox Talk - Weather?

And now for something completely off the wall and different. During my previous study on plate appearances, at bats, and left on base, I also annotated the weather data at Coors Field to determine what the weather does for home runs. The adage I have always heard was with the dog days of summer and the heat that homeruns increase. Is this true? Well look at the graph below.

Games

HR

Rate

Temp

Wind Speed

April

13

18

1.38

62

10

May

14

26

1.86

70

8

June

12

31

2.58

79

8

July

12

32

2.67

87

7

August

14

38

2.71

82

6

September

17

39

2.29

75

7

It would seem that as the summer temp go up the rate of home runs go up. What is interesting though is if you look at temperature and homeruns the trend isn't as nice. I mean overall the trend does increase as temperature rises but you don't really see a definite trend.



What about wind speed?


And finally wind direction?
Interesting it seems low wind speed good and wind out of right field.

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