Number/Duration

Total days

Intensity

Spring 1971

2004

2008

2012

1/14.0

4/9.8

7/9.9

2/8.5

14

39

69

17

2.25

3.13

2.50

4.27

Summer 1971

2004

2008

2012

2/5.5

7/11.3

3/9.7

1/12

11

80

29

12

2.29

2.60

1.75

1.99