| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1975 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 1.57 | 2.55 | 0.14 | 1.52 | 1.21 | 6.99 | ||||||
| 1976 | 0.20 | 1.67 | 0.12 | 1.11 | 2.15 | 0.00 | 3.67 | 2.36 | 2.88 | 0.86 | 0.65 | 0.09 | 15.76 | |||||||||||||
| 1977 | 1.90 | 0.16 | 1.47 | 0.35 | 0.13 | 0.12 | 1.79 | 2.09 | 1.91 | 2.02 | 0.48 | 0.46 | 12.88 | |||||||||||||
| 1978 | 3.05 | 2.23 | 2.97 | 0.24 | 0.50 | 0.20 | 1.90 | 1.07 | 0.42 | 1.98 | 4.75 | 4.55 | 23.86 | |||||||||||||
| 1979 | 5.74 | 1.28 | 2.94 | 0.50 | 2.56 | 0.32 | 1.62 | 4.70 | 0.30 | 0.80 | 0.36 | 0.55 | 21.67 | |||||||||||||
| 1980 | 3.03 | 6.11 | 1.78 | 0.11 | 0.00 | z | 0.61 | 3.14 | 3.34 | 2.11 | 0.22 | 0.14 | 0.69 | 21.28 | ||||||||||||
| 1981 | 1.45 | 0.74 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 2.19 | |||
| 1982 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1983 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1984 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1985 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1986 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1987 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1988 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1989 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1990 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1991 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1992 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1993 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1994 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1995 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1996 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1997 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1998 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1999 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 2000 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 2001 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 1.59 | 1.64 | 0.71 | 1.17 | a | 0.25 | 1.10 | 6.46 | ||||||
| 2002 | 0.02 | 0.00 | 0.66 | 0.11 | 0.00 | 0.00 | 1.02 | 1.08 | 0.77 | 0.17 | 0.76 | 1.03 | 5.62 | |||||||||||||
| 2003 | 0.65 | 4.03 | 0.80 | 0.25 | 0.00 | 0.00 | 1.75 | 1.17 | 1.67 | 0.21 | 0.85 | 0.50 | 11.88 | |||||||||||||
| 2004 | 1.53 | 0.60 | 1.98 | 1.22 | 0.00 | 0.00 | z | 1.57 | 0.00 | z | 0.00 | z | 0.00 | z | 0.87 | 2.45 | 10.22 | |||||||||
| 2005 | 3.57 | 5.78 | 1.11 | 0.37 | u | 0.05 | 0.00 | 1.24 | 2.75 | 0.50 | 0.32 | 0.00 | 0.00 | 15.32 | ||||||||||||
| 2006 | 0.00 | 0.00 | 3.30 | 0.27 | 0.00 | 0.17 | 1.91 | 1.02 | 0.81 | 2.50 | 0.00 | 0.26 | 10.24 | |||||||||||||
| 2007 | 1.43 | 0.87 | 1.35 | 0.08 | 0.23 | 0.00 | 2.64 | 2.13 | 0.55 | 0.03 | 0.55 | 3.65 | 13.51 | |||||||||||||
| 2008 | 3.41 | 2.00 | 0.10 | 0.00 | 1.32 | 0.00 | 2.70 | 5.04 | 0.75 | 0.80 | 1.53 | 1.49 | a | 19.14 | ||||||||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 2.00 | 1.96 | 1.55 | 0.39 | 0.63 | 0.13 | 2.04 | 2.30 | 1.23 | 0.86 | 0.91 | 1.29 | 14.95 | |||||||||||||
| S.D. | 1.69 | 2.09 | 1.09 | 0.41 | 0.94 | 0.19 | 0.77 | 1.34 | 0.88 | 0.83 | 1.21 | 1.36 | 5.79 | |||||||||||||
| SKEW | 0.66 | 1.05 | 0.29 | 1.26 | 1.21 | 1.53 | 0.80 | 0.99 | 0.70 | 0.82 | 2.49 | 1.36 | 0.09 | |||||||||||||
| MAX | 5.74 | 6.11 | 3.30 | 1.22 | 2.56 | 0.61 | 3.67 | 5.04 | 2.88 | 2.50 | 4.75 | 4.55 | 23.86 | |||||||||||||
| MIN | 0.00 | 0.00 | 0.10 | 0.00 | 0.00 | 0.00 | 1.02 | 1.02 | 0.30 | 0.03 | 0.00 | 0.00 | 5.62 | |||||||||||||
| NO YRS | 13 | 13 | 12 | 11 | 11 | 11 | 13 | 13 | 13 | 13 | 14 | 14 | 9 | |||||||||||||