| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1953 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.82 | 0.00 | 0.59 | 0.44 | 1.18 | 4.32 | 1.42 | t | 7.35 | |||||||
| 1954 | 0.00 | z | 0.00 | z | 0.00 | z | 1.32 | 0.12 | 1.87 | 0.00 | 0.22 | 0.36 | 0.34 | 1.74 | 1.83 | 7.80 | ||||||||||
| 1955 | 1.49 | 0.50 | 0.43 | 0.00 | z | 0.00 | z | 0.79 | 0.26 | 0.01 | 0.78 | 0.92 | 2.95 | 7.79 | 15.92 | |||||||||||
| 1956 | 4.55 | 3.21 | 0.25 | 1.17 | 1.63 | 1.65 | 1.23 | 0.02 | a | 0.16 | 0.65 | S | 0.00 | z | 0.00 | z | 14.52 | |||||||||
| 1957 | 0.00 | z | 0.00 | z | 1.94 | k | 1.25 | 2.06 | 0.03 | 0.64 | 0.08 | 2.54 | 2.50 | 2.66 | e | 2.76 | a | 14.52 | ||||||||
| 1958 | 3.03 | 4.54 | 1.46 | 0.24 | 1.45 | 3.24 | 1.00 | 0.39 | 0.60 | 0.28 | 0.61 | 1.29 | 18.13 | |||||||||||||
| 1959 | 3.11 | 1.67 | 0.76 | 0.31 | 0.32 | 0.20 | 0.00 | 1.80 | 1.29 | 0.56 | 0.00 | 0.62 | 10.64 | |||||||||||||
| 1960 | 1.75 | 2.81 | 2.53 | 1.05 | 1.80 | 0.00 | 0.09 | 0.00 | 0.33 | 0.77 | 3.64 | 2.12 | 16.89 | |||||||||||||
| 1961 | 0.90 | 2.82 | 2.49 | 0.22 | 1.71 | 0.91 | 0.00 | 0.86 | 0.82 | 1.65 | 2.24 | 2.65 | 17.27 | |||||||||||||
| 1962 | 0.85 | 2.28 | 0.78 | 0.30 | 2.25 | 0.00 | 0.00 | 0.94 | 1.15 | 6.95 | 1.64 | 2.41 | 19.55 | |||||||||||||
| 1963 | 1.36 | 1.37 | 2.09 | 2.92 | 1.78 | 0.55 | 0.10 | 1.38 | 0.19 | 1.04 | 3.52 | 0.91 | 17.21 | |||||||||||||
| 1964 | 3.63 | 0.00 | z | 0.80 | 0.12 | 0.41 | 2.22 | 0.78 | 0.00 | 0.00 | 0.09 | 2.44 | 0.00 | z | 10.49 | |||||||||||
| 1965 | 0.00 | z | 0.00 | z | 0.00 | z | 1.36 | h | 0.34 | 1.96 | 0.00 | 2.81 | 0.00 | z | 0.13 | 3.63 | 1.39 | a | 10.26 | |||||||
| 1966 | 2.75 | 0.30 | 1.35 | 0.50 | 0.60 | 0.98 | 0.00 | z | 0.00 | z | 0.00 | z | 0.29 | 0.00 | z | 0.00 | z | 6.77 | ||||||||
| 1967 | 0.00 | z | 0.00 | z | 0.00 | z | 2.54 | 1.54 | 0.81 | 0.05 | 0.01 | 0.09 | 1.83 | 0.75 | 1.55 | 9.17 | ||||||||||
| 1968 | 2.15 | 1.84 | 0.11 | g | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 2.16 | 2.43 | 3.95 | 12.53 | ||||||
| 1969 | 5.79 | 0.91 | 0.92 | 0.67 | 0.61 | 2.65 | 0.12 | 0.00 | 0.45 | 0.99 | a | 0.92 | 5.74 | 19.77 | ||||||||||||
| 1970 | 5.92 | 1.30 | 1.32 | 0.40 | 0.19 | 0.49 | 0.00 | 0.00 | 0.06 | 2.06 | 5.27 | 2.27 | 19.28 | |||||||||||||
| 1971 | 2.18 | 0.52 | 3.18 | 0.82 | 2.16 | 1.24 | 0.21 | 0.13 | 0.84 | 0.61 | 1.91 | 2.04 | 15.84 | |||||||||||||
| 1972 | 2.76 | 1.78 | 2.44 | 0.99 | 0.46 | 0.72 | 0.00 | 0.36 | 0.86 | 1.82 | 1.20 | 2.45 | 15.84 | |||||||||||||
| 1973 | 2.33 | 1.22 | 1.34 | 0.29 | 0.53 | 0.00 | 0.16 | 0.16 | 0.84 | 2.49 | 6.58 | 2.70 | 18.64 | |||||||||||||
| 1974 | 3.85 | 1.43 | 3.74 | 1.11 | 0.20 | 0.00 | 0.20 | 0.24 | 0.00 | 0.25 | 0.81 | 2.18 | 14.01 | |||||||||||||
| 1975 | 1.33 | j | 0.00 | z | 0.00 | z | 0.81 | 0.23 | 0.78 | 0.99 | 0.51 | 0.25 | 2.23 | 0.99 | 1.24 | 8.03 | ||||||||||
| 1976 | 0.81 | 2.63 | 0.67 | 0.27 | 0.70 | 0.22 | 1.06 | 2.77 | 0.44 | 0.03 | 0.43 | 0.15 | 10.18 | |||||||||||||
| 1977 | 0.44 | 0.73 | 0.42 | 0.06 | 2.21 | 0.80 | 0.24 | 0.37 | 2.25 | 0.63 | 2.95 | 4.95 | 16.05 | |||||||||||||
| 1978 | 2.32 | 1.59 | 2.98 | 2.21 | 0.75 | 1.08 | 0.57 | 0.73 | 1.06 | 0.00 | 0.76 | 0.52 | 14.57 | |||||||||||||
| 1979 | 1.87 | 1.93 | 1.30 | 1.17 | 1.44 | 0.48 | 0.05 | 2.28 | 0.21 | 3.75 | 2.53 | 1.83 | 18.84 | |||||||||||||
| 1980 | 3.16 | 2.34 | 1.06 | 0.97 | 0.58 | 1.43 | 0.75 | 0.00 | 0.46 | 1.27 | 1.63 | 3.14 | 16.79 | |||||||||||||
| 1981 | 1.41 | 2.02 | 1.29 | 1.30 | 0.97 | 0.27 | 0.08 | 0.00 | 0.41 | 1.46 | 5.76 | 6.93 | 21.90 | |||||||||||||
| 1982 | 1.07 | 2.97 | 1.90 | 1.39 | 0.57 | 1.66 | a | 0.40 | 0.13 | 0.68 | b | 1.63 | 2.30 | 4.59 | 19.29 | |||||||||||
| 1983 | 1.60 | 3.16 | b | 3.61 | c | 1.78 | 0.18 | 0.56 | 0.68 | 0.68 | a | 0.16 | 1.22 | 3.38 | 3.31 | b | 20.32 | |||||||||
| 1984 | 0.00 | z | 1.88 | a | 1.23 | 0.70 | 0.64 | 1.28 | a | 0.14 | 2.29 | b | 0.13 | 1.61 | m | 3.64 | j | 0.00 | z | 8.29 | ||||||
| 1985 | 0.00 | z | 0.00 | l | 0.00 | z | 0.11 | 0.66 | b | 0.37 | 1.19 | 0.70 | 2.20 | 0.42 | 1.55 | 0.46 | d | 7.66 | ||||||||
| 1986 | 2.37 | e | 3.94 | f | 1.80 | b | 0.14 | 0.62 | 0.03 | 0.00 | f | 0.00 | 1.90 | b | 0.75 | 0.85 | c | 1.14 | 9.60 | |||||||
| 1987 | 1.42 | 0.42 | e | 1.67 | d | 0.53 | 0.96 | a | 1.35 | b | 1.38 | b | 0.00 | 0.00 | 0.04 | 0.55 | e | 3.39 | 11.71 | |||||||
| 1988 | 5.17 | a | 0.05 | 0.18 | z | 1.14 | f | 1.68 | b | 0.84 | 0.00 | 0.03 | 0.02 | 0.02 | 4.46 | 1.13 | 13.40 | |||||||||
| 1989 | 2.05 | d | 0.32 | b | 3.44 | c | 1.19 | 1.00 | b | 0.33 | 0.00 | 0.56 | 1.89 | 2.27 | 0.70 | 0.26 | 14.01 | |||||||||
| 1990 | 3.10 | 0.68 | 1.73 | 0.82 | c | 2.87 | 0.35 | b | 0.15 | 1.44 | 1.13 | 0.56 | 0.63 | 0.01 | 13.47 | |||||||||||
| 1991 | 0.48 | 0.78 | 3.03 | a | 1.44 | 0.70 | a | 0.79 | 0.61 | 0.16 | 0.07 | 0.57 | 1.26 | k | 1.08 | i | 8.63 | |||||||||
| 1992 | 0.87 | 0.98 | 0.67 | 1.26 | 0.78 | 1.21 | 0.25 | 0.17 | 0.10 | 2.49 | 1.00 | h | 3.32 | 12.10 | ||||||||||||
| 1993 | 2.64 | c | 1.89 | 3.05 | h | 1.75 | 3.30 | 0.74 | 0.13 | 0.76 | 0.32 | 0.81 | 0.00 | z | 0.00 | z | 12.34 | |||||||||
| 1994 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 1.28 | 0.50 | 1.10 | 0.00 | 0.07 | 0.17 | a | 2.55 | 2.04 | 7.71 | ||||||||
| 1995 | 5.42 | 0.86 | a | 4.35 | e | 1.65 | v | 0.68 | 1.42 | e | 0.86 | 0.00 | 0.00 | 0.18 | 0.80 | 6.92 | a | 21.49 | ||||||||
| 1996 | 4.15 | 4.45 | a | 1.10 | 1.52 | a | 2.35 | 0.57 | 0.05 | 0.20 | 0.78 | 0.82 | 2.46 | 6.72 | 25.17 | |||||||||||
| 1997 | 2.58 | 1.30 | 0.84 | 1.53 | 1.31 | 0.74 | 1.46 | 0.58 | 1.35 | 1.10 | 2.41 | 0.74 | 15.94 | |||||||||||||
| 1998 | 5.25 | 3.03 | a | 2.32 | 1.31 | 3.27 | 1.37 | 0.90 | 0.05 | 0.73 | 0.57 | 5.74 | d | 0.20 | a | 24.74 | ||||||||||
| 1999 | 2.05 | b | 1.77 | h | 0.49 | a | 0.75 | b | 0.74 | 0.02 | a | 0.03 | 1.04 | 0.00 | 1.10 | 0.74 | a | 0.00 | z | 6.96 | ||||||
| 2000 | 5.64 | h | 3.09 | f | 0.68 | a | 1.93 | 0.65 | a | 0.01 | 0.48 | 0.10 | 1.26 | 1.30 | 0.73 | 0.30 | b | 7.44 | ||||||||
| 2001 | 1.00 | b | 1.03 | e | 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 | 2.03 | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 2.55 | 1.72 | 1.69 | 1.00 | 1.14 | 0.86 | 0.41 | 0.56 | 0.66 | 1.17 | 2.24 | 2.50 | 17.16 | |||||||||||||
| S.D. | 1.52 | 1.11 | 1.07 | 0.68 | 0.83 | 0.73 | 0.45 | 0.76 | 0.67 | 1.21 | 1.64 | 2.06 | 3.74 | |||||||||||||
| SKEW | 0.73 | 0.74 | 0.77 | 0.71 | 0.96 | 1.13 | 0.86 | 1.71 | 1.20 | 2.59 | 0.91 | 1.05 | 0.18 | |||||||||||||
| MAX | 5.92 | 4.54 | 4.35 | 2.92 | 3.30 | 3.24 | 1.46 | 2.81 | 2.54 | 6.95 | 6.58 | 7.79 | 25.17 | |||||||||||||
| MIN | 0.44 | 0.05 | 0.25 | 0.06 | 0.12 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 10.18 | |||||||||||||
| NO YRS | 39 | 37 | 37 | 41 | 45 | 47 | 45 | 46 | 45 | 47 | 42 | 40 | 26 | |||||||||||||