| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1969 | ----- | z | ----- | z | ----- | z | 46.05 | h | 56.92 | 62.67 | 62.60 | 61.03 | 57.78 | 46.00 | 40.65 | 32.77 | 52.55 | |||||||||
| 1970 | 31.02 | 38.20 | 40.81 | 41.90 | 52.63 | 62.07 | 64.39 | 63.56 | 53.50 | a | 46.18 | 37.63 | 31.94 | 46.98 | ||||||||||||
| 1971 | 36.11 | 36.23 | 35.58 | 42.92 | 52.44 | 54.12 | 65.19 | 66.10 | 53.13 | 45.26 | 38.58 | 33.48 | 46.60 | |||||||||||||
| 1972 | 32.08 | 35.69 | 42.73 | 41.02 | 53.87 | 58.45 | 64.77 | 64.90 | 53.22 | 47.02 | 39.97 | 27.08 | 46.73 | |||||||||||||
| 1973 | 28.89 | 35.71 | 40.13 | 46.17 | 52.87 | 56.52 | 64.48 | 60.39 | 56.50 | 47.02 | 34.70 | 35.73 | 46.59 | |||||||||||||
| 1974 | 27.13 | 36.73 | 39.50 | 44.17 | 48.65 | 60.23 | 61.63 | ----- | z | 59.50 | 49.11 | 39.68 | 36.02 | 45.67 | ||||||||||||
| 1975 | 34.06 | 32.34 | 37.08 | 40.88 | 51.53 | 55.87 | 64.97 | 58.97 | 58.77 | 46.29 | 37.15 | 36.08 | 46.17 | |||||||||||||
| 1976 | 35.16 | 34.62 | 36.55 | 43.57 | 50.79 | 53.85 | 61.92 | 59.55 | 58.95 | 48.55 | a | 39.97 | 34.87 | 46.53 | ||||||||||||
| 1977 | 27.44 | 37.29 | 39.23 | 49.37 | 47.05 | 60.57 | 61.21 | 67.55 | 53.27 | 47.39 | 36.62 | 34.08 | 46.75 | |||||||||||||
| 1978 | 31.63 | 35.86 | 43.89 | 44.25 | 49.40 | 60.35 | 63.40 | 61.35 | 53.68 | 49.27 | 33.42 | 29.73 | 46.35 | |||||||||||||
| 1979 | 19.02 | 32.91 | 42.06 | 45.32 | 53.47 | 59.68 | 64.32 | 62.24 | 59.68 | 51.29 | 35.35 | 36.03 | 46.78 | |||||||||||||
| 1980 | 25.32 | 32.52 | 38.97 | 47.12 | 51.58 | 53.92 | 64.02 | 60.23 | 58.13 | 49.26 | 40.18 | 37.08 | 46.53 | |||||||||||||
| 1981 | 34.79 | 36.05 | 42.00 | 45.85 | 51.21 | 55.78 | 63.43 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.02 | |||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 30.22 | 35.35 | 39.88 | 44.38 | 51.72 | 58.01 | 63.56 | 62.35 | 56.34 | 47.72 | 37.83 | 33.74 | 46.60 | |||||||||||||
| S.D. | 4.95 | 1.89 | 2.58 | 2.54 | 2.50 | 3.15 | 1.33 | 2.82 | 2.76 | 1.78 | 2.41 | 2.97 | 0.23 | |||||||||||||
| SKEW | -0.85 | -0.43 | -0.17 | 0.32 | 0.07 | -0.02 | -0.56 | 0.61 | -0.12 | 0.49 | -0.48 | -1.03 | -5.88 | |||||||||||||
| MAX | 36.11 | 38.20 | 43.89 | 49.37 | 56.92 | 62.67 | 65.19 | 67.55 | 59.68 | 51.29 | 40.65 | 37.08 | 46.98 | |||||||||||||
| MIN | 19.02 | 32.34 | 35.58 | 40.88 | 47.05 | 53.85 | 61.21 | 58.97 | 53.13 | 45.26 | 33.42 | 27.08 | 46.17 | |||||||||||||
| NO YRS | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 11 | 12 | 12 | 12 | 12 | 10 | |||||||||||||