| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.28 | b | 0.17 | ----- | z | |
| 1966 | 0.08 | 0.12 | 0.12 | 0.16 | 0.39 | 1.14 | 1.33 | 0.11 | 1.08 | 0.00 | 0.15 | 0.63 | 1.33 | |||||||||||||
| 1967 | 0.22 | 0.13 | 0.42 | 0.37 | 0.15 | 0.42 | 0.29 | 0.16 | 0.42 | 0.09 | 0.14 | 0.11 | 0.42 | |||||||||||||
| 1968 | 0.30 | 0.42 | 0.09 | 0.23 | 0.20 | 0.83 | 0.14 | 1.44 | 0.03 | 0.69 | 0.10 | 0.17 | 1.44 | |||||||||||||
| 1969 | 0.38 | 0.32 | 0.04 | 0.29 | 0.40 | 1.22 | 0.32 | 0.15 | 0.02 | 0.16 | 0.22 | 0.45 | 1.22 | |||||||||||||
| 1970 | 0.16 | 0.07 | 0.12 | 0.26 | 0.38 | 0.29 | 0.22 | 1.18 | 0.21 | 0.04 | 0.20 | 0.16 | 1.18 | |||||||||||||
| 1971 | 0.46 | 0.09 | 0.06 | 0.50 | 0.36 | 0.07 | 0.15 | 0.12 | 0.07 | 0.06 | 0.64 | 0.50 | 0.64 | |||||||||||||
| 1972 | 0.04 | 0.10 | 0.08 | 0.05 | 0.08 | 0.62 | 0.05 | 0.54 | 0.50 | 0.48 | 0.18 | 0.23 | 0.62 | |||||||||||||
| 1973 | 0.09 | 0.29 | 0.14 | 0.07 | 0.05 | 0.57 | 0.38 | 0.28 | 0.04 | 0.65 | 0.17 | 0.17 | 0.65 | |||||||||||||
| 1974 | 0.18 | 0.15 | 0.18 | 0.29 | 0.06 | 0.00 | 0.50 | 0.30 | 0.00 | 0.50 | 0.39 | 0.10 | 0.50 | |||||||||||||
| 1975 | 0.35 | 0.15 | 0.29 | 0.34 | 0.37 | 0.20 | 0.03 | 0.87 | 0.45 | 0.56 | 0.14 | 0.05 | 0.87 | |||||||||||||
| 1976 | 0.13 | 0.35 | 0.18 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
| 1977 | 0.60 | 0.00 | b | ----- | z | ----- | z | 0.65 | 0.22 | ----- | z | 0.56 | 0.08 | 0.00 | 0.00 | 0.40 | y | ----- | z | |||||||
| 1978 | 0.60 | h | ----- | z | 0.52 | h | 1.10 | d | ----- | z | 0.00 | 0.07 | 0.05 | 0.26 | 0.00 | 0.40 | 0.30 | ----- | z | |||||||
| 1979 | 0.30 | a | 0.20 | 0.52 | 0.30 | ----- | z | 0.03 | 0.42 | 0.62 | 0.14 | 0.22 | a | 0.21 | 0.28 | ----- | z | |||||||||
| 1980 | 0.63 | 0.12 | ----- | z | 0.25 | 0.50 | b | 0.06 | 0.62 | 0.02 | 0.17 | 0.00 | b | 0.42 | 0.00 | ----- | z | |||||||||
| 1981 | 0.06 | 0.00 | j | 0.38 | b | 0.22 | 0.78 | 0.05 | 0.15 | 0.09 | 0.03 | 0.19 | a | 0.10 | 0.16 | a | 0.78 | n | ||||||||
| 1982 | 1.00 | g | 0.09 | c | 0.15 | d | 0.32 | 0.36 | w | 0.16 | b | 0.55 | 0.46 | 0.58 | c | 0.40 | a | 0.36 | e | 0.19 | e | ----- | z | |||
| 1983 | 0.37 | b | 0.15 | e | 0.10 | h | 0.25 | b | 0.03 | e | ----- | z | 0.00 | a | 1.03 | b | 0.87 | 0.51 | a | 0.53 | b | 0.50 | c | ----- | z | |
| 1984 | 0.07 | a | 0.17 | b | 0.28 | 0.38 | c | 0.22 | a | 0.55 | 0.38 | 1.02 | a | 0.56 | 0.13 | a | 0.20 | d | 0.15 | 1.02 | m | |||||
| 1985 | ----- | z | 0.00 | d | 0.10 | e | 0.08 | 1.05 | 0.26 | a | 0.38 | 0.00 | 0.29 | 0.33 | b | 0.38 | d | 0.11 | d | ----- | z | |||||
| 1986 | ----- | z | ----- | z | ----- | z | ----- | z | 0.02 | f | 0.02 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 0.26 | 0.16 | 0.20 | 0.30 | 0.35 | 0.35 | 0.33 | 0.47 | 0.31 | 0.26 | 0.26 | 0.23 | 0.89 | |||||||||||||
| S.D. | 0.19 | 0.11 | 0.14 | 0.23 | 0.29 | 0.38 | 0.31 | 0.44 | 0.31 | 0.24 | 0.16 | 0.17 | 0.37 | |||||||||||||
| SKEW | 0.62 | 0.77 | 1.00 | 2.35 | 0.95 | 1.09 | 1.84 | 0.76 | 1.09 | 0.41 | 0.70 | 0.97 | 0.25 | |||||||||||||
| MAX | 0.63 | 0.42 | 0.52 | 1.10 | 1.05 | 1.22 | 1.33 | 1.44 | 1.08 | 0.69 | 0.64 | 0.63 | 1.44 | |||||||||||||
| MIN | 0.04 | 0.00 | 0.04 | 0.05 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.42 | |||||||||||||
| YRS | 17 | 18 | 16 | 18 | 16 | 19 | 18 | 19 | 19 | 19 | 20 | 19 | 10 | |||||||||||||