| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.69 | 70.17 | 54.77 | 44.67 | 38.31 | 57.12 | ||||||
| 1968 | 37.40 | 42.71 | 48.97 | 51.08 | 59.69 | 66.55 | 74.11 | 69.23 | 65.15 | 51.84 | 43.92 | 35.40 | 53.84 | |||||||||||||
| 1969 | 24.18 | 36.32 | 46.45 | 52.00 | 63.11 | 69.85 | 71.26 | 69.23 | 64.70 | 50.74 | 44.25 | 37.32 | 52.45 | |||||||||||||
| 1970 | 33.77 | 43.20 | 47.16 | 49.80 | 59.84 | 70.60 | 73.25 | a | 72.55 | 60.63 | 50.77 | 42.38 | 36.50 | 53.37 | ||||||||||||
| 1971 | 40.02 | 41.96 | 42.90 | 50.00 | 60.26 | 61.68 | 73.79 | 75.23 | 60.42 | 51.89 | 43.20 | 37.71 | 53.25 | |||||||||||||
| 1972 | 36.52 | 39.12 | 48.37 | 49.00 | 62.11 | 67.12 | 73.15 | 73.92 | 59.85 | 51.81 | 44.28 | 28.56 | 52.82 | |||||||||||||
| 1973 | 32.11 | 39.79 | 47.26 | 53.90 | 61.06 | 65.68 | 74.24 | 70.06 | 64.08 | 53.81 | 41.07 | 40.61 | 53.64 | |||||||||||||
| 1974 | 31.10 | 42.23 | 45.63 | 51.25 | 56.66 | 68.41 | a | 70.27 | 73.32 | 66.92 | 53.24 | 44.97 | 40.53 | 53.71 | ||||||||||||
| 1975 | 37.08 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 37.08 | ||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 34.02 | 40.76 | 46.68 | 51.00 | 60.39 | 67.13 | 72.87 | 72.65 | 63.99 | 52.36 | 43.59 | 36.87 | 53.30 | |||||||||||||
| S.D. | 4.96 | 2.47 | 2.00 | 1.63 | 2.06 | 2.98 | 1.52 | 3.03 | 3.58 | 1.45 | 1.31 | 3.81 | 0.51 | |||||||||||||
| SKEW | -0.86 | -0.79 | -0.84 | 0.60 | -0.55 | -0.69 | -0.77 | 0.28 | 0.36 | 0.47 | -0.90 | -1.30 | -0.30 | |||||||||||||
| MAX | 40.02 | 43.20 | 48.97 | 53.90 | 63.11 | 70.60 | 74.24 | 77.69 | 70.17 | 54.77 | 44.97 | 40.61 | 53.84 | |||||||||||||
| MIN | 24.18 | 36.32 | 42.90 | 49.00 | 56.66 | 61.68 | 70.27 | 69.23 | 59.85 | 50.74 | 41.07 | 28.56 | 52.45 | |||||||||||||
| NO YRS | 8 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 7 | |||||||||||||