YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.08 | o | 1.10 | 0.12 | 0.75 | 0.75 | 0.12 | ----- | z | |||||
1947 | 0.33 | a | 0.11 | 0.11 | 0.32 | 0.50 | 0.95 | 0.52 | 0.34 | 0.35 | 0.90 | 0.33 | 0.51 | 0.95 | a | |||||||||||
1948 | 0.33 | 0.34 | 0.51 | 0.38 | 0.53 | 0.48 | 0.36 | 0.26 | 0.31 | 0.42 | 0.27 | 0.38 | 0.53 | |||||||||||||
1949 | 0.45 | 0.07 | 0.55 | 0.45 | 0.29 | 0.51 | 0.26 | 0.14 | 0.75 | 0.72 | 0.27 | 0.16 | 0.75 | |||||||||||||
1950 | 0.55 | 0.35 | 0.33 | 1.27 | 0.39 | 0.00 | 0.24 | 0.13 | 0.52 | 0.22 | 0.18 | 0.22 | 1.27 | |||||||||||||
1951 | 0.35 | 0.54 | 0.23 | 0.90 | 0.17 | 0.26 | 0.54 | 1.03 | 0.01 | 0.95 | 0.36 | 1.15 | 1.15 | |||||||||||||
1952 | 0.12 | 0.12 | 0.27 | 0.27 | 0.85 | 0.49 | 0.13 | 1.28 | 0.02 | 0.00 | 0.18 | 0.32 | 1.28 | |||||||||||||
1953 | 0.60 | 0.33 | 0.65 | 0.59 | 0.32 | 0.20 | 0.81 | 0.90 | 0.00 | 0.37 | 0.56 | 0.23 | 0.90 | |||||||||||||
1954 | 0.46 | 0.11 | 0.75 | 0.13 | 0.38 | 0.16 | 0.18 | 0.30 | 0.96 | 0.21 | 0.42 | 0.58 | 0.96 | |||||||||||||
1955 | 0.37 | 0.39 | 0.27 | 0.54 | 0.58 | 0.39 | 0.07 | 1.04 | 0.17 | 0.19 | 0.39 | 0.15 | 1.04 | |||||||||||||
1956 | 0.86 | 0.77 | 0.10 | 0.26 | 0.19 | 0.05 | 0.63 | 0.30 | 0.00 | 0.95 | 0.33 | 1.01 | 1.01 | |||||||||||||
1957 | 0.61 | 0.50 | 0.50 | 0.44 | a | 0.30 | 0.68 | 0.51 | 1.10 | 0.00 | 0.98 | 0.43 | 0.25 | 1.10 | a | |||||||||||
1958 | 0.13 | 0.42 | 0.45 | 0.47 | 0.21 | 0.01 | 0.25 | 0.04 | 0.50 | 0.03 | 0.52 | 0.25 | 0.52 | |||||||||||||
1959 | 0.15 | 0.32 | 0.31 | 0.43 | 0.10 | 0.41 | 0.17 | 0.59 | 0.65 | 0.44 | 0.08 | 0.12 | 0.65 | |||||||||||||
1960 | 0.11 | 0.25 | 0.55 | 0.46 | 1.03 | 0.62 | 0.12 | 0.43 | 0.51 | 0.34 | 0.39 | 0.37 | 1.03 | |||||||||||||
1961 | 0.04 | 0.22 | 0.37 | 0.60 | 0.55 | 0.21 | 0.10 | 0.45 | 1.51 | 0.90 | 0.41 | 0.24 | 1.51 | |||||||||||||
1962 | 0.26 | 0.80 | 0.11 | 0.75 | 0.25 | 0.25 | 0.05 | 0.06 | 0.62 | 0.14 | 0.52 | 0.65 | 0.80 | |||||||||||||
1963 | 0.10 | 0.10 | 0.14 | 0.44 | 0.06 | 0.29 | 0.53 | 0.80 | 0.17 | 0.18 | 0.42 | 0.15 | 0.80 | |||||||||||||
1964 | 0.15 | 0.14 | 0.23 | 0.54 | 0.54 | 0.43 | 0.34 | 0.50 | 0.47 | 0.02 | 0.80 | 0.70 | 0.80 | |||||||||||||
1965 | 0.38 | 0.35 | 0.25 | 0.30 | 0.76 | 0.50 | 0.42 | 0.20 | 0.61 | 0.32 | 0.40 | 0.63 | 0.76 | |||||||||||||
1966 | 0.20 | 0.30 | 0.35 | 0.15 | 1.14 | 0.07 | 0.16 | 0.20 | 0.18 | 0.30 | 0.15 | 0.88 | 1.14 | |||||||||||||
1967 | 0.19 | 0.25 | 0.15 | 0.45 | 0.58 | 0.62 | 0.29 | 0.98 | 0.60 | 0.41 | 0.30 | 0.50 | 0.98 | |||||||||||||
1968 | 0.32 | 0.20 | 0.21 | 1.09 | 0.55 | 0.12 | 0.93 | 0.87 | 0.24 | 0.45 | 0.15 | 0.16 | 1.09 | |||||||||||||
1969 | 0.26 | 0.14 | 0.21 | 0.70 | 0.26 | 1.13 | 0.48 | 0.64 | 0.49 | 0.59 | 0.46 | 0.26 | 1.13 | |||||||||||||
1970 | 0.12 | 0.10 | 0.25 | 0.31 | 0.13 | 0.82 | 0.24 | 0.63 | 0.37 | 0.77 | 0.45 | 0.33 | 0.82 | |||||||||||||
1971 | 0.41 | 0.28 | 0.34 | 0.64 | 0.44 | 0.06 | 0.14 | 0.23 | 0.69 | 0.72 | 0.50 | 0.23 | 0.72 | |||||||||||||
1972 | 0.16 | 0.15 | 0.22 | 0.49 | 0.90 | 0.27 | 0.61 | 0.30 | 0.34 | 0.56 | 0.61 | 0.56 | 0.90 | |||||||||||||
1973 | 0.29 | 0.01 | 0.44 | 0.62 | 0.56 | 0.54 | 0.94 | 0.54 | 0.43 | 0.55 | 0.91 | 0.48 | 0.94 | |||||||||||||
1974 | 0.31 | 0.06 | 0.88 | 0.61 | 0.03 | 0.69 | 0.78 | 0.29 | 0.17 | 0.25 | 0.18 | 0.22 | 0.88 | |||||||||||||
1975 | 0.25 | 0.22 | 0.35 | d | 0.69 | 0.61 | 1.04 | 1.16 | 0.14 | 0.57 | 0.87 | 0.19 | 0.42 | 1.16 | d | |||||||||||
1976 | 0.17 | 0.39 | 0.65 | 0.36 | 0.49 | 0.50 | 0.35 | 0.91 | 0.26 | 0.29 | 0.09 | 0.07 | 0.91 | |||||||||||||
1977 | 0.08 | 0.35 | 0.35 | 0.31 | 0.18 | 0.13 | 0.44 | 0.84 | 0.70 | 0.35 | 0.74 | 0.32 | 0.84 | |||||||||||||
1978 | 0.18 | 0.13 | 0.71 | 0.51 | 0.38 | 0.21 | 0.37 | 0.23 | 0.33 | 0.16 | 0.64 | 0.38 | 0.71 | |||||||||||||
1979 | 0.28 | 0.19 | 0.79 | 0.45 | 0.49 | 0.28 | 0.19 | 0.35 | 0.12 | 0.91 | 0.41 | 0.16 | 0.91 | |||||||||||||
1980 | 0.38 | 0.41 | 0.67 | ----- | z | 0.54 | ----- | z | 0.60 | 0.85 | 0.35 | 0.61 | 0.30 | a | 0.21 | ----- | z | |||||||||
1981 | 0.08 | 0.55 | 0.62 | 0.08 | a | 0.89 | 0.38 | 0.60 | 0.41 | 0.14 | 0.74 | 0.18 | 0.27 | a | 0.89 | b | ||||||||||
1982 | 0.16 | 0.24 | 0.23 | 0.14 | a | 1.64 | 0.24 | 0.32 | a | 0.44 | a | 0.68 | 0.28 | g | 0.72 | a | 0.21 | 1.64 | k | |||||||
1983 | 0.13 | a | 0.31 | 0.32 | 0.34 | 1.01 | 0.59 | 0.88 | 0.41 | 0.47 | 1.17 | 0.71 | b | 0.32 | a | 1.17 | d | |||||||||
1984 | 0.17 | 0.31 | 0.52 | 0.66 | 0.22 | 1.22 | 0.20 | 0.68 | a | 0.48 | 0.44 | a | 0.49 | 0.14 | 1.22 | b | ||||||||||
1985 | 0.43 | 0.26 | 0.33 | 0.85 | 0.39 | a | 0.61 | 0.81 | 0.05 | a | 0.37 | d | 0.52 | g | 0.82 | 0.34 | b | 0.85 | o | |||||||
1986 | 0.33 | 0.69 | 0.45 | 0.18 | 0.25 | 0.98 | 1.72 | 2.30 | 0.45 | 0.51 | 0.50 | 0.22 | b | 2.30 | b | |||||||||||
1987 | 0.27 | a | 0.54 | 0.47 | a | 0.16 | e | 0.52 | a | 0.23 | 0.46 | 0.55 | 0.25 | 0.53 | 0.36 | a | 0.90 | b | 0.90 | k | ||||||
1988 | 0.43 | 0.10 | b | 0.15 | b | 0.22 | 0.72 | e | 0.00 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.28 | a | ----- | z | ||
1989 | 0.29 | 0.45 | 0.60 | a | 0.92 | 0.33 | 0.47 | e | 0.98 | 0.71 | 0.40 | 0.58 | o | 0.32 | a | 0.29 | e | ----- | z | |||||||
1990 | 0.05 | 0.36 | ----- | z | 0.25 | 0.32 | 0.25 | a | 0.36 | ----- | z | ----- | z | ----- | z | ----- | z | 0.22 | ----- | z | ||||||
1991 | 0.41 | 0.52 | 0.36 | 0.78 | a | 0.44 | 0.20 | b | 0.34 | 0.80 | 0.28 | ----- | z | ----- | z | ----- | z | ----- | z | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.28 | 0.31 | 0.39 | 0.49 | 0.49 | 0.43 | 0.47 | 0.58 | 0.40 | 0.51 | 0.42 | 0.37 | 0.99 | |||||||||||||
S.D. | 0.17 | 0.19 | 0.20 | 0.26 | 0.32 | 0.31 | 0.34 | 0.42 | 0.29 | 0.30 | 0.21 | 0.25 | 0.31 | |||||||||||||
SKEW | 1.04 | 0.78 | 0.54 | 0.81 | 1.32 | 0.83 | 1.43 | 1.58 | 1.29 | 0.25 | 0.44 | 1.46 | 2.11 | |||||||||||||
MAX | 0.86 | 0.80 | 0.88 | 1.27 | 1.64 | 1.22 | 1.72 | 2.30 | 1.51 | 1.17 | 0.91 | 1.15 | 2.30 | |||||||||||||
MIN | 0.04 | 0.01 | 0.10 | 0.08 | 0.03 | 0.00 | 0.05 | 0.04 | 0.00 | 0.00 | 0.08 | 0.07 | 0.52 | |||||||||||||
YRS | 45 | 45 | 44 | 44 | 45 | 43 | 44 | 44 | 44 | 40 | 43 | 45 | 37 |