| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.45 | b | 65.79 | a | 56.32 | 45.39 | b | 41.81 | 56.75 | g | ||
| 1962 | 44.94 | 38.93 | a | 38.57 | a | 59.60 | 56.39 | 72.79 | a | 78.25 | g | 87.56 | d | 78.36 | e | 59.70 | h | 57.31 | a | 47.28 | b | 58.17 | b | |||
| 1963 | 40.13 | 49.75 | 43.52 | 48.83 | a | 63.35 | 66.30 | 76.81 | 75.39 | c | 69.87 | 59.50 | a | 48.13 | 47.42 | 57.42 | ||||||||||
| 1964 | 40.42 | 40.38 | e | 40.68 | 44.67 | 54.90 | 66.80 | 77.94 | 76.45 | 67.80 | 64.62 | b | 44.20 | 44.30 | a | 55.26 | ||||||||||
| 1965 | 43.13 | 44.43 | 41.55 | b | 43.23 | 56.29 | 64.40 | 74.84 | 75.60 | a | 62.72 | a | 65.29 | 47.87 | 40.39 | 54.98 | ||||||||||
| 1966 | 36.07 | b | 39.26 | a | 48.10 | 57.10 | a | 64.50 | a | 69.73 | d | 73.97 | b | 75.46 | c | 66.89 | c | 57.45 | b | 46.20 | 44.87 | a | 56.63 | |||
| 1967 | 45.33 | a | 47.00 | 40.29 | 35.67 | 56.10 | 63.96 | b | 77.97 | 77.03 | a | 63.23 | 61.90 | a | 50.10 | 37.13 | a | 54.64 | ||||||||
| 1968 | 40.03 | a | 45.10 | ----- | z | ----- | z | 60.17 | a | 71.57 | 72.81 | ----- | z | 69.70 | c | 62.74 | 48.17 | 41.76 | b | 56.89 | c | |||||
| 1969 | 42.80 | a | 33.93 | 38.77 | a | 47.70 | 61.52 | 66.60 | 72.48 | ----- | z | ----- | z | ----- | z | ----- | z | 43.00 | 50.85 | d | ||||||
| 1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
| 1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.61 | 46.97 | 35.23 | 44.60 | i | |||
| 1972 | 50.71 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.71 | k | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 42.62 | 42.35 | 41.64 | 48.11 | 59.15 | 67.77 | 75.26 | 77.42 | 68.05 | 59.93 | 48.26 | 42.32 | 55.79 | |||||||||||||
| S.D. | 4.17 | 5.13 | 3.31 | 8.21 | 3.71 | 3.25 | 2.33 | 4.54 | 4.93 | 4.65 | 3.81 | 3.99 | 1.18 | |||||||||||||
| SKEW | 0.44 | -0.15 | 1.09 | 0.05 | 0.28 | 0.40 | 0.06 | 1.90 | 1.06 | -0.53 | 1.55 | -0.41 | 0.47 | |||||||||||||
| MAX | 50.71 | 49.75 | 48.10 | 59.60 | 64.50 | 72.79 | 77.97 | 87.56 | 78.36 | 65.29 | 57.31 | 47.42 | 57.42 | |||||||||||||
| MIN | 36.07 | 33.93 | 38.57 | 35.67 | 54.90 | 63.96 | 72.48 | 74.45 | 62.72 | 51.61 | 44.20 | 35.23 | 54.64 | |||||||||||||
| YRS | 9 | 8 | 7 | 7 | 8 | 8 | 7 | 7 | 8 | 8 | 9 | 10 | 5 | |||||||||||||