| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1966 | ----- | z | ----- | z | ----- | z | ----- | z | 0.70 | 0.18 | 0.34 | 0.12 | 0.30 | 0.05 | 0.51 | 0.42 | ----- | z | ||||||||
| 1967 | 0.45 | 0.08 | 0.50 | 0.80 | 0.55 | 1.01 | 0.33 | 0.30 | 0.53 | 0.42 | 0.25 | 0.58 | 1.01 | |||||||||||||
| 1968 | 0.08 | 0.53 | 0.14 | 0.60 | 0.43 | 0.53 | 0.47 | 0.40 | 0.40 | 0.27 | 0.24 | 0.20 | 0.60 | |||||||||||||
| 1969 | 0.35 | 0.90 | 0.22 | 1.70 | 0.01 | 0.50 | 0.07 | 0.30 | 0.00 | 0.83 | 0.32 | ----- | z | ----- | z | |||||||||||
| 1970 | ----- | z | 0.21 | 0.18 | 0.52 | p | 0.06 | 0.38 | 0.35 | 0.27 | 0.72 | ----- | z | ----- | z | ----- | z | ----- | z | |||||||
| 1971 | ----- | z | ----- | z | ----- | z | ----- | z | 0.63 | 0.24 | 0.10 | 0.23 | 0.31 | 0.30 | 0.15 | 0.20 | ----- | z | ||||||||
| 1972 | 0.12 | 0.50 | 0.00 | 0.29 | 0.15 | 0.58 | c | 0.20 | 0.30 | 0.63 | 0.44 | 0.15 | 0.22 | 0.63 | c | |||||||||||
| 1973 | 0.26 | 0.10 | 0.56 | 0.75 | 0.26 | 0.50 | 0.65 | 0.40 | 0.16 | 0.51 | 0.60 | 0.03 | 0.75 | |||||||||||||
| 1974 | 0.38 | 0.25 | 0.35 | 0.50 | a | 0.45 | 0.00 | 0.34 | 0.00 | 0.04 | 0.22 | 0.11 | j | ----- | z | ----- | z | |||||||||
| 1975 | 0.12 | 0.01 | 0.31 | 0.53 | 0.83 | 0.20 | 0.60 | 0.11 | 0.35 | 0.55 | 0.12 | 0.15 | 0.83 | |||||||||||||
| 1976 | 0.07 | 0.25 | 0.20 | 0.30 | 0.14 | 0.00 | 0.32 | 0.17 | 0.41 | 0.90 | 0.10 | 0.01 | 0.90 | |||||||||||||
| 1977 | 0.15 | h | 0.02 | 0.56 | 0.10 | 1.75 | 0.25 | 0.30 | 1.00 | 0.35 | 0.20 | 0.25 | 0.12 | 1.75 | h | |||||||||||
| 1978 | 0.20 | 0.50 | 0.62 | 0.70 | 0.50 | 0.10 | 0.10 | 0.38 | 0.50 | 0.07 | 0.31 | 0.51 | 0.70 | |||||||||||||
| 1979 | 0.95 | 0.35 | 0.15 | 0.04 | 0.33 | 0.36 | 0.30 | 0.12 | 0.03 | 1.25 | 0.03 | 0.01 | 1.25 | |||||||||||||
| 1980 | 1.50 | 0.40 | 0.41 | 0.55 | 0.91 | 0.93 | 0.05 | 0.20 | 0.35 | 0.20 | ----- | z | 0.63 | ----- | z | |||||||||||
| 1981 | 0.14 | 0.13 | 0.52 | 0.65 | 0.63 | 0.15 | 0.15 | 0.10 | 0.60 | 1.02 | 0.05 | 0.60 | 1.02 | |||||||||||||
| 1982 | 0.15 | 0.40 | 0.25 | 0.20 | 0.50 | 0.35 | 0.72 | 0.50 | a | 3.50 | 0.60 | 0.25 | 0.26 | 3.50 | a | |||||||||||
| 1983 | 0.52 | 0.30 | 0.45 | 2.20 | 1.45 | 0.40 | 0.20 | 1.60 | 0.28 | 0.50 | 0.40 | 0.26 | 2.20 | |||||||||||||
| 1984 | 0.10 | 0.44 | 0.55 | 0.75 | 0.27 | 0.66 | 1.10 | 1.15 | 0.60 | 0.60 | 0.05 | 0.03 | 1.15 | |||||||||||||
| 1985 | 0.30 | 0.30 | 0.30 | 0.15 | 0.90 | 0.70 | 1.75 | 0.00 | 0.75 | 0.35 | 1.80 | 0.20 | 1.80 | |||||||||||||
| 1986 | 0.45 | 0.51 | 0.31 | 0.55 | 0.85 | 0.50 | 0.10 | 1.00 | 1.00 | 0.30 | ----- | z | ----- | z | ----- | z | ||||||||||
| 1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.22 | 0.00 | 1.06 | 0.32 | 0.16 | g | ----- | z | ||||
| 1988 | 0.30 | 0.00 | 0.17 | a | 0.28 | 0.42 | 0.33 | 0.11 | 0.95 | 0.55 | 0.15 | 0.31 | 0.12 | a | 0.95 | b | ||||||||||
| 1989 | 0.06 | 0.35 | 0.24 | 0.10 | 0.69 | 0.20 | 0.65 | 2.00 | 0.73 | 0.23 | 0.23 | a | 0.25 | 2.00 | a | |||||||||||
| 1990 | 0.10 | 0.15 | 0.68 | 0.42 | 0.39 | 0.18 | d | 0.57 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 0.33 | 0.30 | 0.35 | 0.58 | 0.57 | 0.38 | 0.41 | 0.49 | 0.55 | 0.48 | 0.32 | 0.25 | 1.29 | |||||||||||||
| S.D. | 0.35 | 0.22 | 0.18 | 0.52 | 0.41 | 0.26 | 0.38 | 0.52 | 0.68 | 0.33 | 0.38 | 0.20 | 0.79 | |||||||||||||
| SKEW | 2.22 | 0.70 | 0.12 | 1.88 | 1.19 | 0.71 | 2.01 | 1.52 | 3.54 | 0.82 | 3.16 | 0.66 | 1.65 | |||||||||||||
| MAX | 1.50 | 0.90 | 0.68 | 2.20 | 1.75 | 1.01 | 1.75 | 2.00 | 3.50 | 1.25 | 1.80 | 0.63 | 3.50 | |||||||||||||
| MIN | 0.06 | 0.00 | 0.00 | 0.04 | 0.01 | 0.00 | 0.05 | 0.00 | 0.00 | 0.05 | 0.03 | 0.01 | 0.60 | |||||||||||||
| YRS | 20 | 22 | 22 | 21 | 24 | 24 | 24 | 24 | 24 | 23 | 20 | 19 | 15 | |||||||||||||