| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1955 | 0.23 | u | 0.40 | 0.52 | 0.52 | 0.39 | 0.17 | 0.00 | 0.00 | 0.75 | 1.57 | 1.25 | 1.00 | 1.57 | ||||||||||||
| 1956 | 0.87 | 1.36 | 0.50 | 0.18 | 1.20 | 1.05 | a | 0.36 | 0.00 | 0.90 | 1.97 | 0.45 | 1.45 | 1.97 | ||||||||||||
| 1957 | 0.90 | 1.08 | 1.05 | 0.44 | 0.33 | 0.21 | 0.08 | 0.00 | 0.50 | 0.68 | 1.47 | 0.80 | 1.47 | |||||||||||||
| 1958 | 1.69 | 1.33 | 0.32 | 0.19 | 0.39 | 1.21 | 0.51 | 0.17 | 0.22 | 0.91 | 1.38 | 0.74 | 1.69 | |||||||||||||
| 1959 | 0.52 | 0.48 | 0.36 | 0.84 | 0.58 | 0.18 | 0.00 | 0.70 | 0.49 | a | 0.47 | 0.08 | 0.63 | 0.84 | ||||||||||||
| 1960 | 0.93 | 1.02 | 0.83 | 0.57 | 1.05 | 0.00 | 0.51 | 0.40 | 0.32 | 0.78 | 1.77 | 0.82 | 1.77 | |||||||||||||
| 1961 | 0.34 | 0.60 | 0.61 | 0.57 | 0.67 | 0.51 | 0.09 | 0.46 | 0.79 | 1.52 | 0.93 | 0.87 | 1.52 | |||||||||||||
| 1962 | 0.51 | 0.38 | 0.48 | 0.47 | 0.69 | 0.14 | l | 0.00 | 0.71 | 0.43 | 2.00 | 0.59 | 1.54 | 2.00 | ||||||||||||
| 1963 | 0.27 | 0.91 | 0.34 | 1.01 | 0.97 | 0.41 | 0.11 | 0.21 | 1.19 | 1.03 | 0.77 | 0.34 | 1.19 | |||||||||||||
| 1964 | 1.45 | 0.25 | 0.86 | A | 0.54 | 0.54 | 0.61 | 0.12 | 0.03 | 0.21 | 0.30 | 0.63 | 2.40 | 2.40 | ||||||||||||
| 1965 | 0.89 | 1.15 | 0.20 | 1.10 | 0.50 | 0.51 | 0.10 | 1.04 | 0.00 | 0.51 | 0.75 | 1.04 | 1.15 | |||||||||||||
| 1966 | 1.08 | 0.62 | 0.90 | 0.35 | 0.19 | 0.81 | 0.82 | 0.17 | 1.27 | 0.41 | 1.16 | 1.88 | 1.88 | |||||||||||||
| 1967 | 0.78 | 0.80 | 0.68 | 0.77 | 1.48 | 0.26 | 0.00 | 0.01 | 0.19 | 0.83 | 0.39 | 1.15 | 1.48 | |||||||||||||
| 1968 | 0.52 | 0.77 | 9999.00 | z | 0.45 | 0.45 | 0.17 | 0.00 | 0.66 | 0.17 | 0.40 | A | 0.93 | A | 0.64 | 0.77 | ||||||||||
| 1969 | 0.99 | 0.72 | 0.78 | 0.61 | 0.70 | 0.70 | 0.10 | 0.00 | 0.16 | 1.00 | 1.12 | 1.64 | 1.64 | |||||||||||||
| 1970 | 1.17 | A | 0.31 | 0.96 | 0.64 | 0.84 | A | 0.71 | A | 0.00 | 0.06 | 0.42 | 0.86 | A | 1.30 | A | 1.02 | A | 0.96 | |||||||
| 1971 | 1.59 | 1.14 | A | 1.50 | A | 9999.00 | z | 0.43 | f | 0.54 | 0.11 | 0.20 | 0.65 | 0.43 | 0.98 | 0.57 | 1.59 | |||||||||
| 1972 | 2.72 | 0.10 | p | 4.56 | A | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 2.72 | ||
| 1973 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1974 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1975 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1976 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1977 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1978 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1979 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1980 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1981 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1982 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1983 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1984 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1985 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1986 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1987 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1988 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1989 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1990 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1991 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1992 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1993 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1994 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1995 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1996 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1997 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1998 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | |
| 1999 | 9999.00 | z | 1.00 | 0.37 | a | 0.37 | 0.46 | 0.00 | 0.00 | 1.14 | 0.00 | 0.75 | 0.70 | 0.69 | 1.14 | |||||||||||
| 2000 | 1.40 | 0.70 | 0.85 | 1.33 | 0.23 | 0.20 | 0.60 | 0.00 | 0.30 | 1.05 | 0.42 | b | 0.24 | 1.40 | ||||||||||||
| 2001 | 0.50 | 0.50 | 0.64 | 0.46 | 0.60 | 0.46 | 0.00 | 0.00 | 0.50 | 0.40 | 0.65 | A | 0.80 | 0.80 | ||||||||||||
| 2002 | 0.64 | c | 0.86 | 0.50 | a | 0.90 | 0.39 | 0.10 | 0.10 | 0.00 | 0.14 | 0.14 | 1.62 | 2.20 | 2.20 | |||||||||||
| 2003 | 0.51 | 0.65 | 0.73 | 0.55 | 0.42 | 0.00 | 0.00 | 0.00 | z | 1.18 | a | 0.10 | 0.76 | 0.88 | 1.18 | |||||||||||
| 2004 | 0.60 | 1.25 | 0.58 | 0.43 | 0.87 | 0.20 | 0.00 | 0.80 | 0.24 | 1.38 | 1.08 | 1.79 | a | 1.79 | ||||||||||||
| 2005 | 0.00 | 9999.00 | z | 0.58 | 0.50 | 0.88 | 0.13 | b | 0.03 | 0.00 | 0.45 | 0.45 | a | 1.62 | 1.34 | d | 1.62 | |||||||||
| 2006 | 1.00 | 0.65 | 1.45 | A | 0.59 | a | 0.68 | 0.54 | 0.00 | 0.00 | 0.10 | 0.10 | b | 1.06 | c | 1.28 | c | 1.28 | ||||||||
| 2007 | 0.72 | b | 1.95 | c | 0.78 | 0.68 | 0.00 | 0.15 | 1.03 | 0.13 | 0.43 | 1.35 | 0.94 | b | 0.84 | A | 1.95 | |||||||||
| 2008 | 9999.00 | z | 0.45 | h | 1.34 | a | 0.67 | b | 0.60 | A | 0.29 | 0.00 | 0.16 | 0.00 | 0.55 | 1.02 | 3.00 | f | 3.00 | |||||||
| 2009 | 1.25 | 0.33 | a | 0.48 | b | 0.45 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.25 | |||||||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 0.92 | 0.82 | 0.82 | 0.60 | 0.60 | 0.37 | 0.17 | 0.26 | 0.43 | 0.78 | 0.92 | 1.07 | 1.52 | |||||||||||||
| S.D. | 0.55 | 0.40 | 0.80 | 0.26 | 0.34 | 0.32 | 0.28 | 0.35 | 0.37 | 0.55 | 0.44 | 0.59 | 0.45 | |||||||||||||
| SKEW | 1.27 | 0.82 | 3.91 | 0.98 | 0.51 | 0.91 | 1.85 | 1.23 | 0.91 | 0.69 | -0.09 | 0.51 | 0.12 | |||||||||||||
| MAX | 2.72 | 1.95 | 4.56 | 1.33 | 1.48 | 1.21 | 1.03 | 1.14 | 1.27 | 2.00 | 1.77 | 2.40 | 2.40 | |||||||||||||
| MIN | 0.00 | 0.25 | 0.20 | 0.18 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.80 | |||||||||||||
| NO YRS | 26 | 26 | 27 | 27 | 27 | 27 | 28 | 27 | 28 | 28 | 28 | 26 | 18 | |||||||||||||