| 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 |