| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | 0.08 | 0.25 | 0.30 | 0.00 | 0.20 | ----- | z | ||||||
| 1949 | 0.24 | 0.40 | 0.15 | 0.03 | 0.28 | 0.03 | m | 0.00 | h | 0.13 | c | 0.00 | 0.00 | 0.39 | 0.04 | 0.40 | x | |||||||||
| 1950 | 0.04 | 0.25 | 0.65 | 0.00 | 0.00 | 0.00 | 0.11 | 0.05 | 1.17 | 0.29 | 0.35 | 0.05 | b | 1.17 | b | |||||||||||
| 1951 | 0.04 | ----- | z | 0.39 | 0.42 | 0.30 | 0.21 | 0.09 | 0.15 | 0.00 | 0.04 | 0.00 | 1.18 | ----- | z | |||||||||||
| 1952 | 1.67 | 0.00 | 1.50 | 1.10 | 0.00 | 0.30 | 0.45 | 0.00 | 0.05 | 0.00 | 0.23 | 0.20 | f | 1.67 | f | |||||||||||
| 1953 | 0.08 | 0.15 | 0.29 | 0.00 | 0.30 | 0.00 | 0.24 | 0.00 | 0.00 | 0.06 | 0.25 | 0.02 | 0.30 | |||||||||||||
| 1954 | 0.31 | 0.85 | 0.80 | 1.00 | 0.10 | 0.47 | 0.30 | 0.00 | 0.03 | 0.00 | 0.31 | 0.23 | 1.00 | |||||||||||||
| 1955 | 0.50 | 0.11 | 0.00 | 0.22 | 1.01 | ----- | z | 0.00 | ----- | z | ----- | z | 0.00 | 0.01 | ----- | z | ----- | z | ||||||||
| 1956 | 1.07 | 0.00 | 0.00 | 1.43 | 0.19 | 0.00 | 0.33 | 0.00 | 0.00 | 0.25 | 0.00 | 0.00 | 1.43 | |||||||||||||
| 1957 | 0.66 | i | 0.24 | 0.02 | 0.53 | 0.65 | 0.02 | 0.05 | 0.10 | 0.20 | 0.67 | 0.20 | 0.12 | c | 0.67 | l | ||||||||||
| 1958 | 0.98 | 0.90 | 0.65 | 0.73 | 0.21 | 0.00 | 0.00 | 0.10 | 0.22 | 0.03 | 0.17 | 0.00 | 0.98 | |||||||||||||
| 1959 | 0.04 | 1.33 | 0.00 | 0.04 | 0.07 | 0.00 | 0.13 | 0.49 | 0.17 | 0.00 | 0.00 | 0.00 | c | 1.33 | c | |||||||||||
| 1960 | 0.00 | j | 0.05 | g | 0.00 | e | 0.08 | 0.00 | 0.00 | 0.03 | 0.00 | 0.36 | 0.03 | 0.98 | 0.00 | 0.98 | v | |||||||||
| 1961 | 0.30 | 0.31 | 0.00 | 0.00 | 0.04 | 0.17 | 0.00 | 0.25 | 0.00 | 0.00 | 0.08 | 0.71 | 0.71 | |||||||||||||
| 1962 | 0.21 | 2.10 | 0.71 | 0.00 | 0.65 | o | ----- | z | ----- | z | ----- | z | 0.48 | 0.00 | 0.00 | ----- | z | ----- | z | |||||||
| 1963 | 0.15 | 0.94 | 0.32 | 0.07 | 0.26 | a | 0.53 | 0.00 | 0.24 | 0.12 | 0.08 | 0.13 | 0.02 | 0.94 | a | |||||||||||
| 1964 | 0.30 | 0.00 | 0.22 | 0.05 | 0.33 | 0.00 | 0.45 | 0.61 | 0.00 | 0.24 | 0.04 | 0.09 | 0.61 | |||||||||||||
| 1965 | 0.23 | 0.00 | 0.27 | 0.24 | 0.12 | ----- | z | 0.55 | 0.29 | 0.28 | 0.00 | 1.00 | 0.90 | ----- | z | |||||||||||
| 1966 | ----- | z | ----- | z | 0.05 | 0.00 | 0.04 | 0.01 | 0.01 | 0.00 | 0.25 | 0.00 | 0.06 | 2.51 | ----- | z | ||||||||||
| 1967 | 1.88 | 0.00 | 0.01 | 0.50 | 0.05 | 0.05 | 0.75 | 0.14 | 0.49 | 0.00 | 0.60 | ----- | z | ----- | z | |||||||||||
| 1968 | 0.00 | 0.37 | 0.00 | 0.05 | 0.02 | 0.00 | 0.42 | 0.34 | 0.00 | 0.13 | ----- | z | 0.24 | ----- | z | |||||||||||
| 1969 | 1.25 | 0.45 | 0.48 | 0.01 | 0.24 | 0.40 | ----- | z | 0.22 | 0.16 | 0.01 | 0.21 | 0.00 | ----- | z | |||||||||||
| 1970 | 0.07 | 0.38 | 0.15 | 0.08 | 0.00 | 0.00 | 0.29 | 0.06 | 0.00 | 0.05 | 1.40 | 0.36 | 1.40 | |||||||||||||
| 1971 | 0.06 | ----- | z | 0.00 | 0.00 | 1.14 | ----- | z | 0.26 | ----- | z | 0.00 | 0.13 | 0.03 | 0.56 | ----- | z | |||||||||
| 1972 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.59 | 0.03 | 0.05 | 0.05 | 0.60 | 0.57 | 0.01 | 0.60 | |||||||||||||
| 1973 | 1.40 | 0.42 | 0.30 | 0.08 | 0.27 | 0.10 | 0.01 | 0.17 | 0.00 | 0.00 | 0.50 | 0.00 | 1.40 | |||||||||||||
| 1974 | 0.20 | 0.00 | 0.30 | 0.10 | 0.07 | 0.00 | 0.37 | 0.00 | 0.00 | 0.41 | 0.16 | 0.17 | 0.41 | |||||||||||||
| 1975 | 0.00 | 0.12 | 0.04 | 0.27 | 0.00 | 0.09 | 0.20 | 0.00 | 0.81 | 0.02 | 0.02 | 0.00 | 0.81 | |||||||||||||
| 1976 | 0.00 | 0.50 | 0.29 | 1.01 | 0.45 | 0.04 | 0.89 | 0.03 | 0.84 | 0.42 | 0.00 | 0.00 | 1.01 | |||||||||||||
| 1977 | 0.46 | 0.00 | 0.06 | 0.01 | 1.11 | 1.13 | 0.00 | 0.70 | 0.04 | 0.02 | 0.00 | 1.10 | 1.13 | |||||||||||||
| 1978 | ----- | z | 1.56 | 0.90 | 0.19 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.38 | ----- | z | ----- | z | ----- | z | ||||
| 1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | 0.56 | ----- | z | ||
| 1980 | 0.31 | 0.97 | 0.30 | 0.63 | 0.41 | 0.02 | 0.74 | 0.01 | 0.21 | 0.00 | 0.11 | 0.39 | 0.97 | |||||||||||||
| 1981 | 0.52 | 0.10 | 0.45 | 1.04 | 0.71 | 0.03 | 0.00 | 0.53 | 0.09 | 0.15 | 0.61 | 0.00 | 1.04 | |||||||||||||
| 1982 | 0.46 | 0.00 | 0.31 | 0.65 | 0.03 | 0.34 | 0.21 | 1.83 | 0.31 | ----- | z | ----- | z | ----- | z | ----- | z | |||||||||
| 1983 | 0.00 | m | ----- | z | 1.75 | 3.00 | d | ----- | z | ----- | z | 0.09 | 1.45 | 0.23 | 0.13 | 0.39 | 0.25 | ----- | z | |||||||
| 1984 | 0.00 | 0.31 | 0.02 | 0.00 | 0.00 | 0.03 | 1.36 | 0.35 | l | 0.38 | 0.16 | 0.90 | 1.37 | 1.37 | l | |||||||||||
| 1985 | 0.00 | a | 0.00 | 0.32 | a | 0.00 | ----- | z | ----- | z | 0.92 | 0.00 | 0.36 | 0.00 | a | ----- | z | ----- | z | ----- | z | |||||
| 1986 | ----- | z | 0.43 | 0.35 | b | 0.91 | b | ----- | z | 0.00 | 0.00 | 0.55 | 0.00 | 0.04 | 0.18 | 0.35 | h | ----- | z | |||||||
| 1987 | ----- | z | ----- | z | 0.21 | 0.12 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.15 | 0.50 | ----- | z | ----- | z | ||||
| 1988 | ----- | z | ----- | z | 0.00 | ----- | z | 0.00 | 0.00 | 0.00 | 0.50 | a | 0.75 | ----- | z | 0.00 | 0.00 | d | ----- | z | ||||||
| 1989 | 0.00 | 0.00 | a | 0.01 | 0.15 | a | 0.41 | 0.52 | 0.45 | 0.48 | 0.27 | 0.00 | 0.16 | 0.00 | 0.52 | b | ||||||||||
| 1990 | 0.40 | 0.19 | 0.00 | 0.81 | 0.35 | 0.31 | 0.45 | 0.23 | 0.37 | 0.00 | 0.00 | 0.00 | 0.81 | |||||||||||||
| 1991 | 0.00 | 0.60 | 0.62 | 0.00 | 0.00 | a | 0.00 | 0.55 | 0.31 | 0.14 | a | 0.32 | 0.00 | 0.57 | 0.62 | b | ||||||||||
| 1992 | 1.29 | 1.19 | 1.75 | 0.08 | 0.19 | 0.01 | 0.80 | 0.30 | 0.00 | 0.82 | 0.00 | 0.14 | b | 1.75 | b | |||||||||||
| 1993 | 0.30 | 0.79 | 0.85 | a | 0.00 | a | 0.10 | a | ----- | z | 0.00 | 0.06 | b | 0.00 | 0.11 | 0.07 | 0.00 | a | ----- | z | ||||||
| 1994 | 0.00 | 0.00 | j | 0.48 | g | 0.05 | 0.32 | 0.00 | 0.00 | 0.00 | k | 0.29 | 0.34 | 0.04 | 0.82 | ----- | z | |||||||||
| 1995 | ----- | z | 0.05 | a | 1.00 | 0.27 | 0.47 | 0.13 | 0.16 | 0.04 | 0.75 | 0.00 | 0.00 | 0.57 | a | ----- | z | |||||||||
| 1996 | 0.09 | e | 0.45 | 1.10 | 0.04 | 0.40 | 0.00 | 0.15 | 0.14 | 0.03 | 0.60 | 0.37 | 1.49 | i | 1.49 | n | ||||||||||
| 1997 | 1.60 | 0.00 | ----- | z | ----- | z | ----- | z | 0.30 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | ----- | z | ||||
| 1998 | 0.27 | 0.67 | 0.48 | 0.80 | 0.44 | 0.34 | 0.83 | 0.01 | 0.08 | 0.06 | 1.03 | 0.02 | 1.03 | |||||||||||||
| 1999 | 0.17 | 0.00 | 0.00 | 0.39 | 0.12 | 0.02 | 0.91 | 1.90 | 1.39 | 0.00 | 0.00 | 0.00 | 1.90 | |||||||||||||
| 2000 | 0.04 | 0.80 | 0.54 | 0.60 | 0.00 | 0.23 | 0.00 | 0.00 | ----- | z | 0.00 | x | 0.01 | 0.01 | ----- | z | ||||||||||
| 2001 | 0.15 | h | 0.90 | 0.52 | 0.33 | 2.00 | 0.00 | 0.50 | c | 0.14 | 0.75 | b | ----- | z | 0.30 | 0.00 | w | ----- | z | |||||||
| 2002 | ----- | z | 0.15 | ----- | z | ----- | z | 0.01 | 0.01 | f | 0.00 | 0.00 | 0.00 | 0.00 | 1.52 | i | 0.36 | g | ----- | z | ||||||
| 2003 | 0.00 | 0.75 | a | 0.53 | g | 0.05 | 1.56 | h | 0.00 | k | 0.20 | q | 1.38 | b | 0.69 | 0.00 | r | ----- | z | ----- | z | ----- | z | |||
| 2004 | 0.75 | a | 0.53 | a | 0.18 | 0.18 | ----- | z | ----- | z | 0.75 | a | 0.10 | e | 0.01 | e | 0.49 | e | 1.12 | 0.34 | ----- | z | ||||
| 2005 | 0.50 | v | ----- | z | 0.24 | x | 0.07 | 0.05 | ----- | z | 0.01 | w | 0.01 | j | 0.64 | c | 0.00 | 0.02 | 0.00 | ----- | z | |||||
| 2006 | 0.00 | 0.00 | 0.30 | c | 0.62 | 0.29 | 0.10 | a | 0.09 | m | 0.00 | 0.00 | 1.42 | a | 0.00 | 0.08 | 1.42 | r | ||||||||
| 2007 | 0.24 | 0.08 | 0.36 | 0.18 | 0.00 | 0.00 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 0.39 | 0.42 | 0.38 | 0.35 | 0.28 | 0.15 | 0.30 | 0.29 | 0.26 | 0.17 | 0.26 | 0.30 | 0.99 | |||||||||||||
| S.D. | 0.51 | 0.47 | 0.43 | 0.51 | 0.38 | 0.23 | 0.34 | 0.45 | 0.32 | 0.27 | 0.35 | 0.49 | 0.40 | |||||||||||||
| SKEW | 1.55 | 1.44 | 1.62 | 2.86 | 2.52 | 2.17 | 1.07 | 2.36 | 1.56 | 2.47 | 1.58 | 2.56 | 0.40 | |||||||||||||
| MAX | 1.88 | 2.10 | 1.75 | 3.00 | 2.00 | 1.13 | 1.36 | 1.90 | 1.39 | 1.42 | 1.40 | 2.51 | 1.90 | |||||||||||||
| 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 | 0.30 | |||||||||||||
| YRS | 46 | 49 | 53 | 55 | 49 | 43 | 49 | 49 | 53 | 52 | 52 | 46 | 24 | |||||||||||||