YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1959 | 61.53 | a | 63.19 | b | 70.43 | c | 76.63 | 87.65 | 95.17 | 93.10 | 92.97 | 91.93 | 78.71 | 62.40 | 58.58 | 77.69 | ||||||||||
1960 | 54.65 | 57.31 | 70.32 | 82.26 | c | 85.77 | 97.97 | 90.68 | 93.19 | 89.10 | 78.19 | 66.13 | 49.84 | 76.28 | ||||||||||||
1961 | 52.68 | 62.43 | 70.33 | a | 77.67 | 89.87 | 94.77 | 94.81 | 96.90 | 87.15 | c | 76.97 | a | 57.00 | a | 59.39 | 76.66 | |||||||||
1962 | 53.35 | 69.18 | 65.13 | 80.13 | 89.84 | 93.97 | 93.28 | b | 96.57 | a | 86.10 | 78.26 | 67.20 | 55.55 | 77.38 | |||||||||||
1963 | 52.35 | 63.18 | 72.97 | 82.14 | a | 88.03 | 93.70 | 96.10 | 90.55 | 85.87 | 80.39 | 67.30 | 54.29 | 77.24 | ||||||||||||
1964 | 54.32 | 56.28 | 67.03 | 77.77 | 86.32 | 91.93 | c | 96.00 | 94.19 | 85.50 | 77.32 | c | 66.70 | 57.52 | 75.91 | |||||||||||
1965 | 62.65 | h | 59.00 | 63.80 | a | 80.67 | 85.77 | 93.37 | 95.74 | 90.32 | 86.87 | 78.68 | 71.53 | 58.84 | 78.60 | a | ||||||||||
1966 | 52.61 | 55.96 | 72.71 | 78.33 | 86.16 | 91.10 | 97.16 | 88.26 | 85.13 | 77.68 | 71.03 | 60.23 | 76.36 | |||||||||||||
1967 | 60.32 | 61.85 | a | 75.77 | 81.73 | 85.29 | 92.13 | 93.68 | 90.29 | 83.80 | 80.87 | 67.53 | 53.16 | 77.20 | ||||||||||||
1968 | 54.97 | 61.07 | 64.10 | 75.53 | 86.94 | 94.40 | 90.00 | 90.65 | 85.97 | 80.13 | 65.13 | 57.45 | 75.53 | |||||||||||||
1969 | 63.52 | 64.46 | 61.00 | a | 81.27 | 87.94 | 94.00 | 96.84 | 96.61 | 85.33 | 76.52 | 61.47 | 58.23 | 77.26 | ||||||||||||
1970 | 56.61 | 60.64 | 64.74 | 76.77 | 85.81 | 91.13 | 91.68 | 92.13 | 84.93 | 69.29 | 66.17 | 62.55 | 75.20 | |||||||||||||
1971 | 58.90 | 62.32 | 71.61 | 76.33 | 84.94 | 93.97 | 93.39 | 85.58 | 85.07 | 74.55 | 67.03 | 58.42 | 76.01 | |||||||||||||
1972 | 61.71 | 64.17 | 75.68 | 82.30 | 84.13 | 91.24 | a | 91.68 | 86.94 | 84.10 | 77.00 | 59.03 | 56.00 | 76.16 | ||||||||||||
1973 | 50.87 | 53.75 | 66.13 | 72.53 | 83.81 | 91.50 | 91.48 | 91.97 | 86.97 | 80.10 | 70.17 | 60.71 | 75.00 | |||||||||||||
1974 | 56.94 | 62.29 | 75.19 | 78.73 | 89.94 | 95.97 | 92.52 | 87.26 | 78.33 | 73.94 | 63.10 | 55.81 | 75.83 | |||||||||||||
1975 | 55.00 | 59.50 | 70.00 | 75.47 | 83.65 | 94.63 | 87.29 | 90.65 | 81.67 | 78.42 | 67.03 | 56.45 | 74.98 | |||||||||||||
1976 | 56.16 | 66.72 | 70.35 | 78.93 | 82.26 | 94.63 | ----- | z | 93.23 | 81.27 | 70.03 | 53.63 | ----- | z | 74.72 | b | ||||||||||
1977 | 54.77 | a | 62.57 | 64.23 | 74.10 | 85.29 | 93.97 | 94.23 | 94.74 | 91.10 | 75.33 | a | 65.43 | 59.52 | 76.27 | |||||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 56.18 | 61.36 | 69.03 | 78.38 | 86.28 | 93.66 | 93.31 | 91.74 | 85.59 | 76.97 | 65.00 | 57.36 | 76.29 | |||||||||||||
S.D. | 3.64 | 3.78 | 4.45 | 2.91 | 2.18 | 1.81 | 2.60 | 3.30 | 3.18 | 3.19 | 4.64 | 3.00 | 0.85 | |||||||||||||
SKEW | 0.60 | -0.12 | -0.06 | -0.22 | 0.21 | 0.32 | -0.44 | -0.11 | -0.10 | -1.14 | -0.89 | -0.71 | 0.02 | |||||||||||||
MAX | 63.52 | 69.18 | 75.77 | 82.30 | 89.94 | 97.97 | 97.16 | 96.90 | 91.93 | 80.87 | 71.53 | 62.55 | 77.69 | |||||||||||||
MIN | 50.87 | 53.75 | 61.00 | 72.53 | 82.26 | 91.10 | 87.29 | 85.58 | 78.33 | 69.29 | 53.63 | 49.84 | 74.98 | |||||||||||||
YRS | 18 | 19 | 19 | 19 | 19 | 19 | 18 | 19 | 19 | 19 | 19 | 18 | 17 |