| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.10 | 44.00 | a | 36.23 | 26.48 | a | 25.32 | 36.83 | g | |||
| 1962 | 25.77 | 24.07 | a | 20.58 | 39.23 | 34.39 | 44.14 | a | 49.79 | g | 45.59 | d | 51.73 | d | 39.57 | j | 29.90 | 30.07 | b | 34.55 | b | |||||
| 1963 | 24.61 | 31.39 | 24.71 | 23.53 | 39.06 | 40.00 | 52.45 | 53.07 | c | 45.67 | 41.48 | 32.17 | 30.39 | 36.55 | ||||||||||||
| 1964 | 25.03 | 22.86 | 23.53 | a | 28.40 | 34.52 | 44.97 | 54.90 | 54.00 | 45.73 | 44.35 | 29.10 | 28.80 | a | 36.35 | |||||||||||
| 1965 | 28.00 | 26.18 | 25.14 | b | 28.48 | a | 36.10 | 41.00 | 53.61 | 53.87 | 42.17 | 45.45 | 33.17 | a | 23.94 | 36.43 | ||||||||||
| 1966 | 21.68 | 24.35 | b | 31.45 | 36.20 | 40.42 | 45.07 | 53.13 | 53.71 | 47.03 | 39.84 | 31.40 | 29.67 | a | 37.83 | |||||||||||
| 1967 | 28.13 | 27.56 | a | 26.58 | 18.79 | a | 36.16 | 39.90 | a | 55.97 | 55.58 | 45.10 | 42.00 | 35.17 | a | 19.26 | 35.85 | |||||||||
| 1968 | 24.52 | 30.66 | ----- | z | ----- | z | 37.00 | 47.83 | 51.71 | ----- | z | 48.90 | 38.94 | 31.07 | 25.26 | 37.32 | c | |||||||||
| 1969 | 29.29 | 18.86 | 24.03 | 30.14 | a | 40.68 | 43.13 | 50.87 | ----- | z | ----- | z | ----- | z | ----- | z | 24.13 | 32.64 | 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 | 33.55 | 30.50 | 22.97 | 29.01 | i | |||
| 1972 | 30.32 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.32 | k | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 26.37 | 25.74 | 25.15 | 29.25 | 37.29 | 43.25 | 53.24 | 52.56 | 46.29 | 40.23 | 31.00 | 25.98 | 36.60 | |||||||||||||
| S.D. | 2.75 | 4.14 | 3.33 | 6.98 | 2.49 | 2.80 | 1.78 | 3.25 | 2.96 | 3.99 | 2.48 | 3.66 | 0.74 | |||||||||||||
| SKEW | -0.14 | -0.11 | 0.74 | -0.00 | 0.26 | 0.17 | 0.25 | -1.60 | 0.56 | -0.35 | -0.13 | -0.29 | 0.99 | |||||||||||||
| MAX | 30.32 | 31.39 | 31.45 | 39.23 | 40.68 | 47.83 | 55.97 | 55.58 | 51.73 | 45.45 | 35.17 | 30.39 | 37.83 | |||||||||||||
| MIN | 21.68 | 18.86 | 20.58 | 18.79 | 34.39 | 39.90 | 50.87 | 45.59 | 42.17 | 33.55 | 26.48 | 19.26 | 35.85 | |||||||||||||
| YRS | 9 | 8 | 7 | 7 | 8 | 8 | 7 | 7 | 8 | 8 | 9 | 10 | 5 | |||||||||||||