| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.68 | k | 49.88 | a | 43.02 | 33.44 | 42.11 | |||
| 1952 | 30.71 | n | 35.88 | l | 38.39 | ----- | z | ----- | z | 57.03 | o | 68.11 | 66.52 | a | 64.63 | 61.10 | j | 39.43 | 36.52 | b | 52.27 | |||||
| 1953 | 41.60 | 41.02 | 42.18 | 47.82 | 50.40 | 56.78 | 67.11 | 66.60 | 66.87 | 54.05 | 47.73 | 39.47 | 51.80 | |||||||||||||
| 1954 | 36.05 | 42.68 | 42.81 | 50.38 | 58.42 | 57.67 | 66.37 | d | 61.15 | 58.19 | a | 51.31 | 44.52 | 34.53 | 50.34 | |||||||||||
| 1955 | 30.67 | s | 36.41 | 41.40 | a | 43.17 | a | 53.00 | a | 60.65 | 63.74 | 67.11 | 60.64 | a | 53.52 | 40.52 | a | 39.19 | 50.85 | |||||||
| 1956 | 38.56 | 35.64 | 40.90 | 51.45 | 57.48 | 60.23 | 68.67 | a | 65.85 | 61.73 | 50.08 | 42.83 | 37.69 | 50.93 | ||||||||||||
| 1957 | 31.37 | 42.07 | a | 45.17 | a | 50.13 | 57.73 | 62.77 | 64.72 | a | 62.89 | 65.63 | 49.82 | 40.65 | 37.48 | a | 50.87 | |||||||||
| 1958 | 39.03 | 45.66 | 41.52 | 47.95 | 61.06 | 62.60 | 71.31 | 72.10 | 61.02 | 55.45 | 44.02 | 42.74 | 53.70 | |||||||||||||
| 1959 | 39.66 | 39.12 | 44.55 | b | 51.32 | 52.19 | 61.88 | 70.00 | 65.31 | 58.95 | 53.32 | 43.32 | 36.42 | 51.34 | ||||||||||||
| 1960 | 36.06 | 39.38 | 47.18 | 49.02 | 52.82 | l | ----- | z | 68.65 | g | 63.81 | g | 63.56 | e | 51.81 | 40.58 | 37.12 | a | 45.59 | |||||||
| 1961 | 40.34 | 43.57 | 42.77 | 49.35 | 53.53 | 65.43 | 66.57 | p | 70.37 | 58.18 | 52.06 | 40.15 | 35.42 | 50.11 | ||||||||||||
| 1962 | 33.92 | 39.77 | 41.63 | 52.20 | 50.92 | 59.52 | 66.39 | 65.60 | 63.87 | 52.31 | 44.55 | 40.03 | 50.89 | |||||||||||||
| 1963 | 34.03 | 46.55 | 43.94 | 44.93 | 57.08 | 58.53 | 63.31 | ----- | z | ----- | z | ----- | z | 41.50 | n | ----- | z | 49.77 | ||||||||
| 1964 | 35.54 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1965 | ----- | z | ----- | z | 45.57 | c | 49.93 | 52.55 | 59.71 | b | 68.06 | 66.53 | 58.90 | 58.15 | 46.82 | 36.23 | 54.25 | |||||||||
| 1966 | 35.11 | 37.88 | 44.92 | 51.42 | 57.11 | 61.12 | 64.92 | 67.21 | 62.84 | b | 53.50 | 45.23 | 39.58 | 51.74 | ||||||||||||
| 1967 | 37.44 | 40.46 | 41.74 | b | 41.97 | a | 54.94 | 62.52 | 68.77 | 72.08 | 65.59 | b | 52.71 | 46.32 | 34.02 | 51.55 | ||||||||||
| 1968 | 37.26 | 46.41 | 47.48 | 47.07 | 52.92 | 61.13 | 69.73 | 65.26 | 61.54 | e | 50.91 | b | 43.78 | c | 35.90 | e | 51.62 | |||||||||
| 1969 | 33.52 | 37.52 | a | 43.91 | d | 48.56 | c | 58.93 | c | 63.68 | 66.10 | 65.71 | l | 63.12 | d | 49.76 | 43.78 | c | 39.47 | 49.85 | ||||||
| 1970 | 40.55 | 45.20 | 46.00 | h | 44.39 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.87 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 36.97 | 41.21 | 43.30 | 48.54 | 55.22 | 60.95 | 67.15 | 66.75 | 62.20 | 52.41 | 43.37 | 37.37 | 51.48 | |||||||||||||
| S.D. | 3.00 | 3.55 | 2.37 | 3.00 | 3.25 | 2.32 | 2.37 | 3.08 | 2.77 | 2.28 | 2.45 | 2.46 | 0.91 | |||||||||||||
| SKEW | -0.17 | 0.11 | 0.02 | -0.91 | 0.13 | -0.01 | -0.02 | 0.29 | -0.01 | 0.89 | 0.00 | 0.32 | 1.35 | |||||||||||||
| MAX | 41.60 | 46.55 | 47.48 | 52.20 | 61.06 | 65.43 | 71.31 | 72.10 | 66.87 | 58.15 | 47.73 | 42.74 | 53.70 | |||||||||||||
| MIN | 31.37 | 35.64 | 38.39 | 41.97 | 50.40 | 56.78 | 63.31 | 61.15 | 58.18 | 49.76 | 39.43 | 33.44 | 50.34 | |||||||||||||
| NO YRS | 15 | 16 | 17 | 16 | 15 | 15 | 15 | 14 | 16 | 16 | 17 | 17 | 10 | |||||||||||||