| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1962 | ----- | z | ----- | z | ----- | z | ----- | z | 47.24 | f | 57.27 | 62.44 | f | 63.83 | j | 60.27 | 49.13 | e | 38.59 | h | 35.48 | f | 55.56 | |||
| 1963 | 25.39 | c | 40.82 | 37.83 | b | 39.53 | 52.79 | 56.12 | a | 61.65 | 64.77 | 64.05 | a | 51.25 | a | 38.55 | 31.90 | b | 47.05 | |||||||
| 1964 | 28.18 | 30.00 | 33.57 | a | 40.87 | 47.85 | g | 56.65 | 66.03 | ----- | z | 55.58 | 52.10 | a | 34.36 | a | 29.44 | e | 42.68 | |||||||
| 1965 | 29.84 | 35.52 | c | 37.31 | b | 45.53 | a | 48.59 | c | 58.09 | a | 65.66 | 63.68 | 52.45 | 52.53 | 39.17 | d | 29.69 | d | 46.50 | ||||||
| 1966 | 28.77 | g | 28.88 | h | 38.78 | d | 45.31 | c | 54.79 | 56.84 | e | 63.60 | 65.27 | 60.31 | c | 48.38 | e | 40.12 | q | 31.06 | d | 51.59 | ||||
| 1967 | 30.38 | g | 35.10 | b | 36.31 | g | 36.52 | d | 50.11 | c | 59.10 | d | 68.42 | 70.27 | 63.48 | 48.10 | b | 38.43 | c | 27.00 | c | 49.65 | ||||
| 1968 | 30.63 | d | 39.21 | a | 40.93 | a | 41.55 | 51.11 | 59.53 | 68.56 | 60.37 | 56.90 | 47.02 | b | 37.75 | 27.42 | e | 46.75 | ||||||||
| 1969 | 26.74 | 28.48 | a | 34.87 | a | 43.42 | 53.97 | 59.45 | 64.08 | 64.08 | 58.77 | 43.10 | 39.88 | d | 32.58 | k | 46.98 | |||||||||
| 1970 | 33.62 | g | 37.71 | 36.53 | 37.12 | b | 51.37 | 62.52 | a | 67.87 | 67.50 | 53.63 | 45.94 | 39.11 | c | 26.73 | e | 47.82 | ||||||||
| 1971 | 29.74 | 33.11 | a | 33.32 | 42.26 | a | 52.15 | 55.12 | b | 66.89 | 70.61 | 53.75 | 44.45 | 37.00 | g | 25.73 | g | 48.14 | ||||||||
| 1972 | 26.48 | g | 32.60 | c | 42.08 | f | 41.36 | e | 53.43 | a | 61.21 | d | 65.32 | 66.55 | 53.28 | 47.26 | 36.20 | 24.96 | f | 50.80 | ||||||
| 1973 | 26.42 | f | 36.11 | 36.66 | c | 42.28 | 52.61 | 59.13 | 66.31 | 64.65 | 57.52 | 46.87 | 34.43 | 33.93 | b | 48.23 | ||||||||||
| 1974 | 24.10 | b | 33.00 | 36.96 | c | 42.62 | d | 48.00 | 62.83 | a | 64.82 | 65.11 | ----- | z | ----- | z | ----- | z | ----- | z | 47.18 | |||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 27.80 | 34.70 | 36.68 | 41.53 | 51.72 | 58.76 | 65.77 | 65.72 | 57.50 | 48.01 | 37.54 | 29.65 | 46.77 | |||||||||||||
| S.D. | 2.47 | 3.75 | 2.32 | 2.78 | 2.15 | 2.40 | 2.06 | 2.94 | 3.96 | 2.91 | 2.06 | 2.56 | 0.28 | |||||||||||||
| SKEW | -0.33 | -0.02 | 0.14 | -0.41 | -0.41 | 0.32 | -0.39 | 0.20 | 0.33 | 0.08 | -0.63 | 0.35 | 0.00 | |||||||||||||
| MAX | 30.63 | 40.82 | 40.93 | 45.53 | 54.79 | 62.83 | 68.56 | 70.61 | 64.05 | 52.53 | 39.88 | 33.93 | 47.05 | |||||||||||||
| MIN | 24.10 | 28.48 | 33.32 | 36.52 | 48.00 | 55.12 | 61.65 | 60.37 | 52.45 | 43.10 | 34.36 | 26.73 | 46.50 | |||||||||||||
| NO YRS | 7 | 11 | 10 | 12 | 11 | 13 | 12 | 11 | 12 | 12 | 9 | 8 | 3 | |||||||||||||