| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.03 | 36.47 | 28.77 | 39.42 | ||||
| 1966 | 25.68 | 25.75 | 33.26 | 40.10 | 53.29 | 53.90 | 66.10 | 67.48 | 61.10 | 44.71 | 35.17 | 28.00 | 44.54 | |||||||||||||
| 1967 | 27.39 | 29.71 | 29.27 | a | 32.43 | 45.45 | 55.87 | 70.06 | 75.10 | 65.33 | 43.52 | 36.17 | ----- | z | 46.39 | |||||||||||
| 1968 | 26.74 | 34.93 | 35.97 | 34.10 | 45.81 | 54.97 | ----- | z | 58.90 | a | 52.61 | g | 45.64 | q | 31.77 | 22.74 | 38.44 | |||||||||
| 1969 | 23.90 | a | 24.50 | 32.71 | 39.67 | 51.00 | 56.63 | 65.13 | 68.52 | 59.00 | 38.16 | 39.53 | 30.13 | 44.07 | ||||||||||||
| 1970 | 26.10 | 33.82 | 29.60 | a | 31.00 | 46.19 | 57.76 | a | ----- | z | 71.10 | 49.97 | 42.00 | 32.37 | 23.13 | 40.28 | ||||||||||
| 1971 | 25.13 | 29.64 | 28.10 | 37.80 | 48.23 | 50.33 | 67.48 | 74.23 | a | 49.33 | 41.16 | 31.40 | 21.40 | a | 42.02 | |||||||||||
| 1972 | 22.55 | 29.00 | 35.10 | 34.03 | 49.58 | 55.27 | 64.97 | 69.19 | 49.87 | 45.77 | 30.77 | 21.42 | 42.29 | |||||||||||||
| 1973 | 22.73 | a | 30.43 | 30.52 | 38.03 | 50.10 | 56.33 | 69.65 | 68.42 | 54.33 | 43.26 | 27.50 | 28.45 | 43.31 | ||||||||||||
| 1974 | 21.23 | 26.57 | 30.77 | 35.83 | 42.55 | 60.97 | 65.16 | 65.71 | 62.67 | 50.19 | 34.53 | 24.77 | 43.41 | |||||||||||||
| 1975 | 24.13 | 24.33 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.23 | ||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 24.56 | 28.87 | 31.70 | 35.89 | 48.02 | 55.78 | 66.94 | 68.74 | 56.45 | 44.65 | 33.57 | 25.42 | 43.28 | |||||||||||||
| S.D. | 1.99 | 3.65 | 2.71 | 3.22 | 3.32 | 2.87 | 2.18 | 4.80 | 6.39 | 4.57 | 3.47 | 3.43 | 0.98 | |||||||||||||
| SKEW | -0.19 | 0.31 | 0.33 | -0.10 | -0.05 | -0.11 | 0.53 | -0.66 | 0.08 | 0.59 | -0.01 | 0.08 | -0.04 | |||||||||||||
| MAX | 27.39 | 34.93 | 35.97 | 40.10 | 53.29 | 60.97 | 70.06 | 75.10 | 65.33 | 53.03 | 39.53 | 30.13 | 44.54 | |||||||||||||
| MIN | 21.23 | 24.33 | 28.10 | 31.00 | 42.55 | 50.33 | 64.97 | 58.90 | 49.33 | 38.16 | 27.50 | 21.40 | 42.02 | |||||||||||||
| NO YRS | 10 | 10 | 9 | 9 | 9 | 9 | 7 | 9 | 8 | 9 | 10 | 9 | 6 | |||||||||||||