YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.64 | a | 54.97 | a | 58.30 | j |
1960 | 50.25 | a | 52.93 | b | 58.66 | 62.07 | a | 66.08 | 70.64 | b | 76.33 | a | 74.60 | 76.39 | b | 65.25 | a | 57.71 | a | 52.37 | 63.61 | |||||
1961 | 56.19 | 56.56 | a | 57.34 | b | 61.48 | a | 63.08 | a | 69.57 | a | 73.94 | 75.55 | 70.45 | b | 66.17 | b | 58.07 | 53.74 | 63.51 | ||||||
1962 | 52.88 | a | 53.02 | 52.34 | 63.20 | c | 62.75 | a | 67.22 | 72.61 | 75.34 | 72.38 | 65.97 | a | 58.97 | a | 54.50 | a | 62.60 | |||||||
1963 | 51.94 | 60.89 | 55.69 | 57.29 | b | 64.47 | 66.37 | 72.08 | 74.98 | 75.77 | 67.29 | 58.28 | 53.29 | 63.19 | ||||||||||||
1964 | 50.85 | 52.10 | 55.10 | 59.02 | 62.13 | a | 67.50 | 74.28 | a | 73.68 | 70.73 | 70.48 | 56.57 | 53.50 | 62.16 | |||||||||||
1965 | 53.95 | 53.89 | 56.08 | 60.40 | a | 62.97 | 64.63 | 70.89 | 75.93 | a | 69.17 | a | 68.81 | 60.60 | 53.97 | 62.61 | ||||||||||
1966 | 52.11 | 52.14 | 58.68 | 62.62 | a | ----- | z | 69.38 | a | 73.60 | a | 76.71 | 72.72 | 67.45 | a | 60.95 | a | 54.98 | a | 63.76 | a | |||||
1967 | 53.56 | 56.23 | 57.98 | 54.22 | 64.48 | 65.80 | 74.98 | 78.95 | 75.20 | 69.48 | 63.35 | 52.27 | 63.88 | |||||||||||||
1968 | 53.15 | 59.64 | 58.85 | 61.05 | a | 64.55 | 68.62 | a | 75.17 | a | 73.73 | 72.95 | 66.74 | 60.23 | 51.55 | 63.85 | ||||||||||
1969 | 56.79 | 53.57 | 55.76 | 60.93 | 65.76 | 67.18 | 74.58 | 78.05 | 75.12 | 64.42 | 60.90 | 55.02 | 64.01 | |||||||||||||
1970 | 54.82 | 57.91 | 58.10 | 58.40 | 65.79 | 68.88 | a | 76.00 | 76.77 | 71.50 | 65.45 | 59.60 | 52.90 | 63.84 | ||||||||||||
1971 | 53.45 | 54.48 | 58.03 | 59.62 | 61.84 | 67.42 | 74.23 | 78.06 | 74.20 | 64.15 | 56.40 | 49.58 | 62.62 | |||||||||||||
1972 | 50.68 | 56.21 | 61.05 | 61.85 | 66.45 | 69.18 | 76.70 | a | 76.31 | 71.90 | 65.74 | 57.02 | 52.56 | 63.80 | ||||||||||||
1973 | 51.00 | 55.86 | 54.27 | a | 59.26 | a | 65.11 | 71.23 | 72.02 | 73.90 | a | 69.82 | 66.13 | 57.17 | 54.60 | 62.53 | ||||||||||
1974 | 53.92 | 54.27 | 58.10 | 60.80 | 64.32 | 70.98 | 74.78 | a | 73.29 | 74.18 | 65.79 | b | 58.90 | 51.63 | 63.41 | |||||||||||
1975 | 52.67 | a | 52.93 | 54.94 | 56.50 | 62.94 | 66.88 | 73.40 | b | 72.92 | 74.17 | 64.74 | 57.82 | 54.20 | a | 62.01 | ||||||||||
1976 | 55.37 | 56.27 | a | 57.55 | 58.52 | 66.27 | 71.41 | a | 73.60 | 73.77 | 72.85 | 68.55 | 61.62 | b | 53.71 | 64.12 | ||||||||||
1977 | 53.73 | c | 56.94 | c | 54.95 | 63.05 | 62.85 | a | 70.17 | 75.26 | 75.34 | 72.60 | 68.78 | b | 61.64 | a | 59.18 | c | 64.54 | |||||||
1978 | 56.29 | 56.38 | 60.45 | a | 60.40 | 66.87 | 73.57 | 74.80 | a | 73.53 | 71.52 | f | 70.27 | i | 57.22 | g | 50.37 | 63.63 | c | |||||||
1979 | 52.18 | a | 53.10 | c | 57.02 | 62.02 | 65.31 | 71.62 | 72.96 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.21 | f | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 53.29 | 55.27 | 57.05 | 60.13 | 64.42 | 68.91 | 74.17 | 75.34 | 72.89 | 66.74 | 59.34 | 53.44 | 63.31 | |||||||||||||
S.D. | 1.92 | 2.44 | 2.15 | 2.32 | 1.57 | 2.28 | 1.52 | 1.78 | 2.07 | 1.83 | 2.03 | 2.03 | 0.75 | |||||||||||||
SKEW | 0.23 | 0.64 | -0.19 | -0.85 | -0.10 | 0.07 | -0.38 | 0.50 | -0.09 | 0.49 | 0.21 | 0.64 | -0.29 | |||||||||||||
MAX | 56.79 | 60.89 | 61.05 | 63.20 | 66.87 | 73.57 | 76.70 | 78.95 | 76.39 | 70.48 | 63.35 | 59.18 | 64.54 | |||||||||||||
MIN | 50.25 | 52.10 | 52.34 | 54.22 | 61.84 | 64.63 | 70.89 | 72.92 | 69.17 | 64.15 | 56.40 | 49.58 | 62.01 | |||||||||||||
YRS | 20 | 20 | 20 | 20 | 19 | 20 | 19 | 19 | 18 | 18 | 19 | 20 | 17 |