| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.88 | b | 31.88 | |
| 1954 | ----- | z | 38.31 | d | 32.07 | d | 45.53 | 55.74 | 56.78 | 71.88 | a | 64.34 | 57.92 | 46.85 | a | 41.53 | 26.03 | 48.82 | ||||||||
| 1955 | 21.39 | 23.59 | 31.97 | 39.25 | 48.90 | 60.32 | 66.24 | 69.65 | 57.50 | a | 48.98 | 33.42 | 29.98 | 44.27 | ||||||||||||
| 1956 | 29.65 | 24.05 | 36.65 | 44.70 | 53.10 | 60.58 | 69.66 | 64.77 | 59.87 | 45.55 | 34.57 | a | 31.32 | 46.21 | ||||||||||||
| 1957 | 19.11 | 33.15 | a | 37.08 | 42.02 | 51.32 | 60.40 | 68.87 | 67.47 | 60.72 | a | 45.26 | 32.12 | 32.84 | 45.86 | |||||||||||
| 1958 | 29.31 | 36.91 | 32.56 | 40.48 | 58.90 | 59.98 | 68.02 | 70.61 | 58.25 | 51.56 | 38.77 | 37.44 | 48.57 | |||||||||||||
| 1959 | 32.21 | 30.41 | 36.19 | 46.37 | 46.98 | 63.33 | 71.03 | a | 66.39 | 54.27 | 49.02 | 38.17 | 29.16 | 46.96 | ||||||||||||
| 1960 | 23.55 | 25.78 | 38.55 | 44.90 | 50.50 | 63.95 | 74.44 | 65.56 | 60.48 | 48.00 | a | 36.20 | 29.73 | 46.80 | ||||||||||||
| 1961 | 31.70 | a | 35.07 | a | 36.67 | a | 43.23 | b | 52.57 | a | 68.24 | a | 72.64 | b | 70.63 | l | 52.90 | 46.20 | a | 34.60 | 27.50 | a | 45.57 | |||
| 1962 | 23.33 | a | 31.70 | 32.57 | a | 46.42 | f | 49.88 | b | 59.21 | a | 66.85 | a | 66.90 | b | 60.83 | 49.09 | c | 36.96 | f | 33.89 | c | 47.42 | |||
| 1963 | 25.18 | 39.29 | 36.11 | 39.84 | a | 54.61 | 55.92 | 66.95 | b | 67.78 | a | 63.35 | 52.55 | a | 38.20 | c | 29.65 | 47.45 | ||||||||
| 1964 | 25.06 | 26.81 | 30.95 | 41.93 | b | 49.88 | a | 56.35 | ----- | z | 66.80 | a | 55.83 | 51.78 | b | 34.27 | 29.32 | 42.64 | ||||||||
| 1965 | 30.98 | 33.41 | a | 33.39 | 44.73 | 48.08 | 57.69 | c | 67.77 | a | 64.52 | 52.20 | ----- | z | ----- | z | 28.32 | 46.11 | ||||||||
| 1966 | 27.44 | 27.27 | ----- | z | 45.02 | ----- | z | 59.68 | 69.05 | 69.03 | 62.68 | 48.27 | 38.43 | 29.66 | 47.65 | |||||||||||
| 1967 | 31.35 | 34.55 | 36.61 | 37.15 | 51.56 | 57.82 | 71.65 | 71.13 | 63.35 | 49.11 | 37.47 | 23.65 | 47.12 | |||||||||||||
| 1968 | 27.66 | 36.95 | 39.81 | 39.07 | 50.55 | 61.18 | 69.82 | 61.39 | 56.87 | 47.16 | 34.70 | 27.95 | 46.09 | |||||||||||||
| 1969 | 29.66 | 27.95 | 33.46 | c | 45.27 | 55.72 | a | 59.05 | 68.87 | 69.95 | 60.78 | 42.87 | l | 38.35 | g | ----- | z | 50.08 | ||||||||
| 1970 | ----- | z | 38.88 | x | 37.06 | o | 40.33 | c | 52.16 | 60.12 | 68.85 | 69.55 | 52.18 | 42.21 | 36.87 | 26.03 | 49.81 | |||||||||
| 1971 | 31.73 | 32.46 | 34.08 | 41.65 | 51.23 | 56.70 | 65.32 | 70.53 | 50.82 | 42.97 | 35.20 | 23.34 | 44.67 | |||||||||||||
| 1972 | 23.81 | 33.43 | 46.00 | r | 43.23 | b | 54.19 | d | 62.35 | d | 68.56 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.59 | |||
| 1973 | ----- | z | ----- | z | 36.83 | p | 42.00 | 54.39 | 62.07 | a | 67.24 | 68.74 | b | ----- | z | ----- | z | ----- | z | ----- | z | 58.89 | ||||
| 1974 | 33.29 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 27.24 | 31.73 | 34.92 | 42.46 | 52.12 | 60.09 | 69.14 | 67.51 | 57.82 | 47.79 | 36.30 | 29.32 | 46.40 | |||||||||||||
| S.D. | 4.04 | 4.87 | 2.61 | 2.61 | 2.97 | 2.98 | 2.34 | 2.66 | 4.04 | 2.93 | 2.48 | 3.48 | 1.28 | |||||||||||||
| SKEW | -0.44 | -0.21 | 0.19 | -0.29 | 0.39 | 0.87 | 0.53 | -0.56 | -0.29 | -0.23 | 0.30 | 0.32 | -0.17 | |||||||||||||
| MAX | 32.21 | 39.29 | 39.81 | 46.37 | 58.90 | 68.24 | 74.44 | 71.13 | 63.35 | 52.55 | 41.53 | 37.44 | 48.57 | |||||||||||||
| MIN | 19.11 | 23.59 | 30.95 | 37.15 | 46.98 | 55.92 | 65.32 | 61.39 | 50.82 | 42.21 | 32.12 | 23.34 | 44.27 | |||||||||||||
| NO YRS | 17 | 18 | 16 | 19 | 19 | 20 | 19 | 18 | 18 | 16 | 15 | 18 | 10 | |||||||||||||