| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | 0.11 | 0.30 | 0.53 | 0.00 | 0.28 | 1.22 | f | ||||||
| 1949 | 0.61 | 0.40 | 0.15 | 0.03 | 1.20 | 0.03 | m | 0.00 | h | 0.13 | c | 0.00 | 0.00 | 0.43 | 0.04 | 2.99 | b | |||||||||
| 1950 | 0.04 | 0.25 | 0.65 | 0.00 | 0.00 | 0.00 | 0.26 | 0.11 | 1.46 | 0.29 | 0.55 | 0.05 | b | 3.66 | ||||||||||||
| 1951 | 0.04 | ----- | z | 0.39 | 1.23 | 0.30 | 0.25 | 0.31 | 0.25 | 0.00 | 0.04 | 0.00 | 1.98 | 4.79 | a | |||||||||||
| 1952 | 2.07 | 0.00 | 1.55 | 2.58 | 0.00 | 0.30 | 0.91 | 0.00 | 0.08 | 0.00 | 0.25 | 0.37 | f | 7.74 | a | |||||||||||
| 1953 | 0.08 | 0.15 | 0.29 | 0.00 | 0.30 | 0.00 | 0.50 | 0.00 | 0.00 | 0.06 | 0.42 | 0.02 | 1.82 | |||||||||||||
| 1954 | 0.64 | 0.97 | 2.05 | 1.00 | 0.20 | 0.47 | 0.52 | 0.00 | 0.03 | 0.00 | 0.42 | 0.23 | 6.53 | |||||||||||||
| 1955 | 0.94 | 0.11 | 0.00 | 0.22 | 1.36 | ----- | z | 0.00 | ----- | z | ----- | z | 0.00 | 0.01 | ----- | z | 2.64 | d | ||||||||
| 1956 | 1.26 | 0.00 | 0.00 | 3.80 | 0.34 | 0.00 | 0.66 | 0.00 | 0.00 | 0.42 | 0.00 | 0.00 | 6.48 | |||||||||||||
| 1957 | 0.67 | i | 0.31 | 0.02 | 0.66 | 1.46 | 0.02 | 0.06 | 0.13 | 0.20 | 1.42 | 0.28 | 0.12 | c | 4.68 | a | ||||||||||
| 1958 | 0.98 | 1.66 | 1.52 | 1.33 | 0.52 | 0.00 | 0.00 | 0.19 | 0.32 | 0.03 | 0.17 | 0.00 | 6.72 | |||||||||||||
| 1959 | 0.04 | 1.61 | 0.00 | 0.04 | 0.17 | 0.00 | 0.15 | 0.49 | 0.17 | 0.00 | 0.00 | 0.00 | c | 2.67 | ||||||||||||
| 1960 | 0.00 | j | 0.06 | g | 0.00 | e | 0.13 | 0.00 | 0.00 | 0.05 | 0.00 | 0.36 | 0.03 | 3.46 | 0.00 | 4.03 | b | |||||||||
| 1961 | 0.30 | 0.40 | 0.00 | 0.00 | 0.07 | 0.17 | 0.00 | 1.18 | 0.00 | 0.00 | 0.12 | 0.71 | 2.95 | |||||||||||||
| 1962 | 0.56 | 3.43 | 0.73 | 0.00 | 1.63 | o | ----- | z | ----- | z | ----- | z | 0.48 | 0.00 | 0.00 | ----- | z | 5.20 | e | |||||||
| 1963 | 0.22 | 0.94 | 0.58 | 0.12 | 0.60 | a | 1.77 | 0.00 | 0.40 | 0.47 | 0.16 | 0.23 | 0.03 | 5.52 | ||||||||||||
| 1964 | 0.34 | 0.00 | 0.36 | 0.07 | 0.49 | 0.00 | 0.51 | 0.66 | 0.00 | 0.28 | 0.10 | 0.14 | 2.95 | |||||||||||||
| 1965 | 0.52 | 0.00 | 0.35 | 1.21 | 0.16 | ----- | z | 0.78 | 0.72 | 0.30 | 0.00 | 2.60 | 1.11 | 7.75 | a | |||||||||||
| 1966 | ----- | z | ----- | z | 0.05 | 0.00 | 0.04 | 0.01 | 0.01 | 0.00 | 0.48 | 0.00 | 0.08 | 3.68 | 4.35 | b | ||||||||||
| 1967 | 2.14 | 0.00 | 0.03 | 1.80 | 0.16 | 0.05 | 1.12 | 0.35 | 1.85 | 0.00 | 1.53 | ----- | z | 9.03 | a | |||||||||||
| 1968 | 0.00 | 0.37 | 0.00 | 0.05 | 0.03 | 0.00 | 0.95 | 0.64 | 0.00 | 0.13 | ----- | z | 0.24 | 2.41 | a | |||||||||||
| 1969 | 3.49 | 2.56 | 0.75 | 0.01 | 0.35 | 1.24 | ----- | z | 0.22 | 0.16 | 0.01 | 0.23 | 0.00 | 9.02 | a | |||||||||||
| 1970 | 0.16 | 1.29 | 0.21 | 0.11 | 0.00 | 0.00 | 0.35 | 0.09 | 0.00 | 0.05 | 1.93 | 0.53 | 4.72 | |||||||||||||
| 1971 | 0.06 | ----- | z | 0.00 | 0.00 | 2.17 | ----- | z | 0.42 | ----- | z | 0.00 | 0.17 | 0.03 | 1.31 | 4.16 | c | |||||||||
| 1972 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 1.44 | 0.03 | 0.05 | 0.11 | 1.22 | 1.03 | 0.01 | 3.92 | |||||||||||||
| 1973 | 1.68 | 1.83 | 0.59 | 0.08 | 0.36 | 0.10 | 0.01 | 0.30 | 0.00 | 0.00 | 0.71 | 0.00 | 5.66 | |||||||||||||
| 1974 | 0.65 | 0.00 | 0.65 | 0.10 | 0.12 | 0.00 | 0.49 | 0.00 | 0.00 | 1.33 | 0.16 | 0.17 | 3.67 | |||||||||||||
| 1975 | 0.00 | 0.27 | 0.17 | 0.50 | 0.00 | 0.09 | 0.30 | 0.00 | 2.72 | 0.02 | 0.02 | 0.00 | 4.09 | |||||||||||||
| 1976 | 0.00 | 1.35 | 0.29 | 1.59 | 0.55 | 0.07 | 2.54 | 0.03 | 2.51 | 0.44 | 0.00 | 0.00 | 9.37 | |||||||||||||
| 1977 | 0.51 | 0.00 | 0.14 | 0.01 | 2.10 | 1.13 | 0.00 | 0.82 | 0.04 | 0.02 | 0.00 | 1.33 | 6.10 | |||||||||||||
| 1978 | ----- | z | 3.18 | 3.18 | 0.41 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.49 | ----- | z | ----- | z | 7.26 | h | ||||
| 1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | 0.56 | 0.56 | j | ||
| 1980 | 0.93 | 2.64 | 0.41 | 1.19 | 0.96 | 0.03 | 1.24 | 0.01 | 0.29 | 0.00 | 0.14 | 0.39 | 8.23 | |||||||||||||
| 1981 | 0.65 | 0.10 | 1.45 | 1.26 | 1.10 | 0.03 | 0.00 | 0.56 | 0.11 | 0.22 | 1.04 | 0.00 | 6.52 | |||||||||||||
| 1982 | 0.98 | 0.00 | 0.91 | 0.65 | 0.07 | 0.84 | 0.42 | 2.45 | 0.44 | ----- | z | ----- | z | ----- | z | 6.76 | c | |||||||||
| 1983 | 0.00 | m | ----- | z | 2.43 | 3.02 | d | ----- | z | ----- | z | 0.09 | 4.86 | 0.75 | 0.23 | 0.72 | 0.30 | 12.40 | d | |||||||
| 1984 | 0.00 | 0.33 | 0.02 | 0.00 | 0.00 | 0.08 | 4.18 | 1.30 | l | 0.54 | 0.16 | 1.33 | 3.16 | 9.80 | a | |||||||||||
| 1985 | 0.00 | a | 0.00 | 0.32 | a | 0.00 | ----- | z | ----- | z | 1.65 | 0.00 | 0.64 | 0.00 | a | ----- | z | ----- | z | 2.61 | d | |||||
| 1986 | ----- | z | 1.40 | 0.63 | b | 1.12 | b | ----- | z | 0.00 | 0.00 | 1.31 | 0.00 | 0.04 | 0.18 | 0.45 | h | 4.68 | c | |||||||
| 1987 | ----- | z | ----- | z | 0.36 | 0.12 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.43 | 1.46 | ----- | z | 2.37 | h | ||||
| 1988 | ----- | z | ----- | z | 0.00 | ----- | z | 0.00 | 0.00 | 0.00 | 0.50 | a | 0.75 | ----- | z | 0.00 | 0.00 | d | 1.25 | d | ||||||
| 1989 | 0.00 | 0.00 | a | 0.01 | 0.15 | a | 0.75 | 0.87 | 0.47 | 0.80 | 0.34 | 0.00 | 0.16 | 0.00 | 3.55 | |||||||||||
| 1990 | 0.91 | 0.19 | 0.00 | 1.13 | 0.35 | 0.31 | 0.94 | 0.24 | 0.66 | 0.00 | 0.00 | 0.00 | 4.73 | |||||||||||||
| 1991 | 0.00 | 0.60 | 2.68 | 0.00 | 0.00 | a | 0.00 | 0.55 | 0.53 | 0.28 | a | 0.32 | 0.00 | 1.28 | 6.24 | |||||||||||
| 1992 | 1.58 | 2.81 | 2.93 | 0.08 | 0.34 | 0.01 | 1.07 | 0.48 | 0.00 | 0.87 | 0.00 | 0.15 | b | 10.32 | ||||||||||||
| 1993 | 0.95 | 1.97 | 1.39 | a | 0.00 | a | 0.11 | a | ----- | z | 0.00 | 0.06 | b | 0.00 | 0.11 | 0.07 | 0.00 | a | 4.66 | a | ||||||
| 1994 | 0.00 | 0.00 | j | 0.71 | g | 0.19 | 1.25 | 0.00 | 0.00 | 0.00 | k | 0.44 | 0.34 | 0.06 | 0.82 | 3.10 | c | |||||||||
| 1995 | ----- | z | 0.10 | a | 1.49 | 0.57 | 1.11 | 0.31 | 0.16 | 0.04 | 0.79 | 0.00 | 0.00 | 0.94 | a | 5.51 | a | |||||||||
| 1996 | 0.15 | e | 0.73 | 1.55 | 0.04 | 0.43 | 0.00 | 0.32 | 0.14 | 0.03 | 0.96 | 0.71 | 1.71 | i | 5.06 | a | ||||||||||
| 1997 | 3.40 | 0.00 | ----- | z | ----- | z | ----- | z | 0.54 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | 3.94 | h | ||||
| 1998 | 0.30 | 2.96 | 0.73 | 1.46 | 1.24 | 0.99 | 1.58 | 0.01 | 0.19 | 0.14 | 1.03 | 0.03 | 10.66 | |||||||||||||
| 1999 | 0.19 | 0.00 | 0.00 | 0.50 | 0.34 | 0.02 | 1.57 | 1.92 | 1.39 | 0.00 | 0.00 | 0.00 | 5.93 | |||||||||||||
| 2000 | 0.05 | 2.13 | 0.86 | 0.60 | 0.00 | 0.23 | 0.00 | 0.00 | ----- | z | 0.00 | x | 0.01 | 0.01 | 3.89 | b | ||||||||||
| 2001 | 0.29 | h | 1.53 | 0.98 | 0.33 | 2.00 | 0.00 | 0.68 | c | 0.14 | 0.75 | b | ----- | z | 0.45 | 0.00 | w | 6.86 | c | |||||||
| 2002 | ----- | z | 0.15 | ----- | z | ----- | z | 0.01 | 0.02 | f | 0.00 | 0.00 | 0.00 | 0.00 | 1.91 | i | 0.51 | g | 0.16 | f | ||||||
| 2003 | 0.00 | 0.75 | a | 0.56 | g | 0.05 | 1.58 | h | 0.00 | k | 0.24 | q | 2.25 | b | 1.04 | 0.00 | r | ----- | z | ----- | z | 4.09 | g | |||
| 2004 | 0.75 | a | 1.48 | a | 0.18 | 0.18 | ----- | z | ----- | z | 1.50 | a | 0.10 | e | 0.01 | e | 0.88 | e | 1.56 | 0.46 | 7.10 | b | ||||
| 2005 | 1.00 | v | ----- | z | 0.24 | x | 0.09 | 0.07 | ----- | z | 0.02 | w | 0.02 | j | 0.76 | c | 0.00 | 0.04 | 0.00 | 0.96 | f | |||||
| 2006 | 0.00 | 0.00 | 0.69 | c | 1.00 | 0.45 | 0.10 | a | 0.09 | m | 0.00 | 0.00 | 1.90 | a | 0.00 | 0.08 | 4.22 | a | ||||||||
| 2007 | 0.24 | 0.13 | 0.37 | 0.24 | 0.00 | 0.00 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.98 | g | |||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 0.62 | 0.84 | 0.66 | 0.56 | 0.48 | 0.27 | 0.56 | 0.47 | 0.42 | 0.26 | 0.46 | 0.44 | 5.54 | |||||||||||||
| S.D. | 0.83 | 1.01 | 0.81 | 0.81 | 0.59 | 0.45 | 0.78 | 0.86 | 0.60 | 0.43 | 0.72 | 0.79 | 2.37 | |||||||||||||
| SKEW | 1.98 | 1.09 | 1.55 | 2.05 | 1.43 | 1.88 | 2.54 | 3.34 | 2.23 | 2.09 | 2.26 | 2.62 | 0.62 | |||||||||||||
| MAX | 3.49 | 3.43 | 3.18 | 3.80 | 2.17 | 1.77 | 4.18 | 4.86 | 2.72 | 1.90 | 3.46 | 3.68 | 10.66 | |||||||||||||
| MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.82 | |||||||||||||
| YRS | 46 | 49 | 53 | 55 | 49 | 43 | 49 | 49 | 53 | 52 | 52 | 46 | 24 | |||||||||||||