| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.50 | r | 37.92 | d | 30.81 | g | 37.92 | |
| 1967 | 30.70 | c | 32.46 | e | 33.65 | g | 34.92 | f | 48.96 | h | 55.96 | d | 65.05 | b | 65.70 | c | 59.44 | d | 44.62 | g | 39.36 | e | 23.02 | j | 49.81 | |
| 1968 | 25.26 | f | 35.62 | e | 38.24 | f | 41.27 | d | 47.23 | e | 56.65 | f | 64.81 | 58.08 | 55.80 | 44.48 | 34.58 | 27.67 | a | 45.51 | ||||||
| 1969 | 24.68 | c | 28.50 | 31.55 | 41.18 | 51.89 | 56.95 | 61.66 | 60.69 | 57.10 | 41.44 | 38.25 | 32.97 | a | 43.90 | |||||||||||
| 1970 | 31.94 | 35.45 | 38.45 | 37.88 | 49.55 | 58.60 | 64.23 | 62.16 | 51.43 | 44.21 | 38.62 | 27.23 | a | 44.98 | ||||||||||||
| 1971 | 29.60 | 33.04 | 32.00 | 39.93 | 48.65 | 53.33 | 63.15 | 65.47 | 52.18 | 42.98 | 36.15 | 26.35 | 43.57 | |||||||||||||
| 1972 | 25.26 | 33.28 | 41.56 | 39.30 | 50.24 | 57.30 | 64.06 | 63.26 | 51.90 | 46.19 | 35.85 | 24.12 | a | 44.36 | ||||||||||||
| 1973 | 25.85 | 33.52 | 35.92 | 43.77 | 53.50 | 57.57 | 64.79 | 62.52 | 55.30 | 45.52 | 36.62 | 34.23 | 45.76 | |||||||||||||
| 1974 | 26.82 | 31.38 | 36.66 | 40.13 | 47.85 | 59.28 | 62.03 | 63.29 | 58.92 | 46.66 | 38.07 | 31.34 | 45.20 | |||||||||||||
| 1975 | 25.82 | 29.93 | 33.52 | 36.82 | 48.40 | 54.92 | 62.95 | 59.92 | 58.38 | 44.08 | ----- | z | ----- | z | 45.47 | |||||||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 27.58 | 32.57 | 35.67 | 40.04 | 49.66 | 56.74 | 63.64 | 62.34 | 55.61 | 44.45 | 37.27 | 29.13 | 44.63 | |||||||||||||
| S.D. | 2.76 | 2.35 | 3.62 | 2.15 | 2.13 | 1.95 | 1.25 | 2.49 | 3.13 | 1.71 | 1.55 | 3.74 | 0.83 | |||||||||||||
| SKEW | 0.53 | -0.35 | 0.38 | 0.18 | 0.69 | -0.47 | -0.44 | -0.23 | -0.20 | -0.40 | -0.37 | 0.15 | 0.11 | |||||||||||||
| MAX | 31.94 | 35.62 | 41.56 | 43.77 | 53.50 | 59.28 | 65.05 | 65.70 | 59.44 | 46.66 | 39.36 | 34.23 | 45.76 | |||||||||||||
| MIN | 24.68 | 28.50 | 31.55 | 36.82 | 47.23 | 53.33 | 61.66 | 58.08 | 51.43 | 41.44 | 34.58 | 24.12 | 43.57 | |||||||||||||
| NO YRS | 8 | 9 | 7 | 8 | 8 | 8 | 9 | 9 | 9 | 8 | 9 | 7 | 6 | |||||||||||||