| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.03 | 30.03 | ||
| 1955 | 24.13 | 23.50 | 27.48 | 34.80 | 49.45 | 63.53 | 68.26 | 75.68 | 61.47 | 50.97 | 29.77 | 29.15 | d | 44.85 | ||||||||||||
| 1956 | 28.03 | 24.17 | 33.32 | 44.63 | 53.90 | 60.07 | 73.03 | 69.71 | 65.16 | e | 44.58 | 38.80 | 29.79 | g | 48.67 | |||||||||||
| 1957 | 19.58 | 31.89 | 33.65 | 40.43 | 50.45 | 62.41 | a | 72.58 | 71.00 | 65.87 | 43.19 | 32.90 | 31.52 | 46.29 | ||||||||||||
| 1958 | 31.19 | 32.36 | 29.42 | 37.03 | 59.94 | 60.47 | 70.55 | 74.65 | 60.83 | 54.71 | 35.73 | 35.03 | 48.49 | |||||||||||||
| 1959 | 27.87 | 26.46 | 32.13 | 45.40 | 47.06 | 65.57 | 76.29 | 69.29 | 53.53 | 48.77 | 40.17 | 33.45 | 47.17 | |||||||||||||
| 1960 | 21.87 | 23.45 | 36.13 | 42.77 | 49.16 | 66.90 | 79.13 | 68.29 | 65.37 | 48.71 | 33.60 | 33.03 | 47.37 | |||||||||||||
| 1961 | 31.21 | q | 30.86 | 33.00 | 39.90 | 53.32 | 70.43 | 75.87 | 76.97 | 53.60 | 46.55 | 32.93 | 24.10 | 48.87 | ||||||||||||
| 1962 | 26.26 | 27.68 | 29.26 | 46.70 | 47.94 | 62.50 | 69.61 | 69.43 | a | 64.30 | 51.13 | 37.73 | 35.97 | 47.38 | ||||||||||||
| 1963 | 24.19 | 37.96 | 33.90 | b | 36.08 | d | 52.19 | 55.22 | c | 69.48 | 73.68 | 66.67 | 53.48 | 35.87 | 32.77 | 47.62 | ||||||||||
| 1964 | 25.48 | 28.00 | ----- | z | 40.47 | 51.94 | 57.00 | 74.35 | 69.77 | 59.33 | 55.23 | 34.93 | c | 25.30 | h | 49.65 | ||||||||||
| 1965 | 31.93 | b | 32.04 | a | 32.97 | a | 43.00 | ----- | z | 60.96 | b | 72.32 | c | 67.23 | a | ----- | z | 58.63 | a | 39.44 | c | 31.07 | a | 46.96 | ||
| 1966 | 28.27 | e | 26.56 | a | 38.26 | d | ----- | z | 61.06 | 62.00 | 74.52 | 73.32 | 68.20 | 50.45 | b | 39.97 | 29.96 | f | 52.26 | |||||||
| 1967 | 27.88 | e | 32.63 | a | ----- | z | 33.88 | d | 54.10 | b | 62.54 | d | 75.94 | 79.26 | 69.00 | 49.80 | a | ----- | z | 26.61 | c | 51.16 | ||||
| 1968 | 31.64 | f | 40.95 | j | 38.58 | 40.47 | 51.13 | ----- | z | 76.37 | a | ----- | z | 61.37 | 48.75 | c | 33.07 | 27.75 | k | 49.96 | ||||||
| 1969 | 22.17 | m | 25.04 | 32.21 | g | 45.30 | 58.65 | 62.23 | 73.10 | 76.23 | a | 66.33 | 44.75 | c | 42.18 | h | 34.06 | 53.97 | ||||||||
| 1970 | 27.06 | 37.12 | b | 31.03 | 34.27 | 52.55 | 64.07 | 73.35 | 77.32 | 59.32 | b | 49.33 | a | 37.00 | b | ----- | z | 49.31 | ||||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 26.44 | 29.31 | 33.01 | 40.34 | 52.86 | 62.39 | 73.42 | 72.79 | 62.69 | 49.94 | 35.85 | 31.40 | 47.02 | |||||||||||||
| S.D. | 3.44 | 4.67 | 3.31 | 4.31 | 4.20 | 3.69 | 2.95 | 3.79 | 4.79 | 4.15 | 3.16 | 3.48 | 1.16 | |||||||||||||
| SKEW | -0.33 | 0.41 | 0.17 | -0.14 | 0.68 | 0.15 | -0.03 | 0.14 | -0.68 | 0.30 | -0.20 | -0.76 | -0.86 | |||||||||||||
| MAX | 31.93 | 37.96 | 38.58 | 46.70 | 61.06 | 70.43 | 79.13 | 79.26 | 69.00 | 58.63 | 40.17 | 35.97 | 48.49 | |||||||||||||
| MIN | 19.58 | 23.45 | 27.48 | 33.88 | 47.06 | 55.22 | 68.26 | 67.23 | 53.53 | 43.19 | 29.77 | 24.10 | 44.85 | |||||||||||||
| NO YRS | 13 | 15 | 13 | 15 | 15 | 15 | 16 | 15 | 15 | 16 | 14 | 12 | 7 | |||||||||||||