| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.87 | 54.84 | 52.03 | 41.37 | 36.26 | 20.87 | 13.19 | 38.63 | ||||||||
| 1960 | 11.71 | 21.17 | 28.32 | 33.86 | a | 39.13 | 49.48 | a | 56.77 | 49.61 | 42.20 | 32.87 | 26.60 | 18.52 | 34.19 | |||||||||||
| 1961 | 19.52 | 28.04 | a | 29.97 | 30.37 | 39.39 | c | 50.43 | 55.68 | 57.58 | 39.86 | a | 33.10 | 21.63 | 18.10 | 35.31 | ||||||||||
| 1962 | 10.16 | 21.46 | 24.78 | d | 34.63 | 39.84 | 46.50 | 51.22 | d | 48.48 | 43.90 | 33.84 | 28.03 | 22.61 | 33.79 | |||||||||||
| 1963 | 13.06 | 30.50 | 25.39 | 28.93 | 42.39 | 44.53 | 50.90 | b | 52.52 | b | 46.44 | c | 34.54 | c | 25.90 | 21.52 | 34.72 | |||||||||
| 1964 | 21.35 | h | 19.31 | ----- | z | ----- | z | ----- | z | 44.97 | ----- | z | ----- | z | ----- | z | 32.70 | d | 27.33 | 24.35 | 29.73 | |||||
| 1965 | ----- | z | ----- | z | 24.06 | 34.37 | 35.00 | 42.63 | ----- | z | ----- | z | 37.93 | 33.39 | 24.80 | 17.42 | 31.20 | |||||||||
| 1966 | 20.61 | 20.21 | 24.42 | 30.33 | ----- | z | 45.93 | 50.55 | 50.84 | ----- | z | ----- | z | 27.40 | ----- | z | 33.79 | |||||||||
| 1967 | ----- | z | ----- | z | ----- | z | 31.35 | d | 38.77 | 47.37 | 57.13 | 52.94 | 44.93 | 28.39 | 24.40 | 18.00 | 38.14 | |||||||||
| 1968 | 16.48 | 26.26 | b | 27.74 | 23.66 | a | 31.39 | 43.13 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.11 | |||||
| 1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.61 | 44.21 | a | 28.68 | 19.46 | d | 25.90 | 33.57 | ||||
| 1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.23 | 51.42 | 47.87 | ----- | z | ----- | z | ----- | z | ----- | z | 48.84 | ||||
| 1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1972 | ----- | z | 25.00 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.00 | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 15.26 | 23.99 | 26.38 | 30.94 | 37.99 | 46.73 | 53.56 | 51.28 | 42.61 | 32.64 | 24.64 | 19.96 | 34.50 | |||||||||||||
| S.D. | 4.28 | 4.06 | 2.28 | 3.62 | 3.63 | 2.94 | 2.81 | 2.95 | 2.81 | 2.57 | 3.02 | 3.96 | 0.66 | |||||||||||||
| SKEW | 0.13 | 0.36 | 0.46 | -0.90 | -0.82 | 0.31 | 0.14 | 0.96 | -0.34 | -0.65 | -0.56 | -0.05 | 0.25 | |||||||||||||
| MAX | 20.61 | 30.50 | 29.97 | 34.63 | 42.39 | 51.87 | 57.13 | 57.58 | 46.44 | 36.26 | 28.03 | 25.90 | 35.31 | |||||||||||||
| MIN | 10.16 | 19.31 | 24.06 | 23.66 | 31.39 | 42.63 | 50.55 | 47.87 | 37.93 | 28.39 | 19.46 | 13.19 | 33.79 | |||||||||||||
| NO YRS | 6 | 8 | 7 | 8 | 7 | 11 | 8 | 9 | 8 | 9 | 10 | 9 | 4 | |||||||||||||