YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1968 | ----- | z | ----- | z | 60.87 | 67.37 | 77.56 | 87.08 | 89.97 | 86.56 | 84.47 | 71.77 | 58.14 | b | 48.00 | a | 73.18 | b | ||||||||
1969 | 54.38 | a | 52.31 | a | 55.52 | 67.35 | 76.89 | 82.07 | 91.13 | a | 92.84 | 84.72 | 67.80 | a | 60.80 | c | 52.92 | a | 69.89 | |||||||
1970 | 50.38 | b | 58.28 | c | 57.98 | a | 62.47 | 77.35 | 85.58 | 91.81 | e | 90.45 | 80.76 | a | 67.58 | 59.76 | a | 50.87 | 69.44 | |||||||
1971 | 50.79 | 54.89 | 61.48 | b | 66.60 | 73.37 | a | 84.17 | i | 91.74 | b | 87.22 | b | 82.07 | c | 66.72 | a | 57.88 | 48.34 | b | 67.37 | a | ||||
1972 | 50.15 | a | 56.78 | b | 68.24 | b | 68.18 | 76.48 | b | 86.29 | b | 92.74 | 89.23 | c | 83.93 | 70.98 | 54.90 | 49.83 | a | 70.65 | ||||||
1973 | 48.48 | 54.33 | a | 54.32 | c | 64.91 | a | 79.02 | ----- | z | 91.93 | a | 90.57 | b | ----- | z | ----- | z | 58.58 | 52.50 | c | 66.07 | c | |||
1974 | 50.64 | b | 54.06 | b | 61.91 | b | 67.65 | c | 76.45 | j | 87.48 | f | 88.76 | d | ----- | z | 84.15 | d | 73.04 | c | 58.59 | b | 48.15 | a | 65.22 | c |
1975 | 49.52 | i | ----- | z | 57.40 | e | 60.94 | d | 72.34 | c | 81.63 | c | 90.31 | j | 89.50 | d | 84.36 | h | 70.84 | f | 59.56 | e | 53.00 | 67.77 | e | |
1976 | 53.53 | b | 59.03 | 59.25 | e | 68.37 | c | 81.31 | b | 89.69 | c | 93.45 | k | 91.28 | b | 83.55 | j | 69.67 | h | 61.44 | e | ----- | z | 70.49 | d | |
1977 | 52.17 | b | 57.59 | a | 57.21 | e | 71.96 | f | 72.07 | c | 88.58 | d | 93.41 | b | 91.47 | 83.66 | a | 76.48 | g | 61.39 | h | 56.80 | f | 74.52 | d | |
1978 | 53.38 | e | 55.98 | f | 63.19 | 65.58 | 74.60 | 86.03 | a | 89.80 | h | 88.04 | f | 83.50 | 74.87 | a | 58.33 | d | ----- | z | 69.94 | d | ||||
1979 | 47.32 | n | 52.00 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.30 | d | 56.20 | 53.73 | 60.07 | i | ||
1980 | 54.89 | 58.59 | 58.79 | 67.42 | 72.44 | 83.40 | 90.24 | 87.36 | b | 80.88 | 68.29 | 57.18 | 55.23 | 69.56 | ||||||||||||
1981 | 53.74 | 55.55 | 57.45 | 68.12 | 71.65 | 83.97 | 89.53 | 89.56 | 81.77 | 66.35 | 59.10 | 52.55 | a | 69.11 | ||||||||||||
1982 | 50.55 | c | 55.95 | 60.33 | a | 66.45 | 75.47 | a | 80.08 | 87.23 | 87.79 | b | 79.93 | b | 66.79 | 55.92 | 49.47 | 68.00 | ||||||||
1983 | 51.85 | a | 53.46 | 57.26 | 60.13 | c | 72.71 | b | 82.72 | a | 88.17 | a | 87.71 | b | 84.73 | 72.45 | 59.23 | 53.50 | 68.66 | |||||||
1984 | 53.44 | 55.45 | 62.35 | 66.75 | b | 80.98 | 83.72 | 89.77 | a | 89.15 | 85.90 | a | 69.13 | 58.81 | a | 52.31 | 70.65 | |||||||||
1985 | 51.35 | a | 54.59 | a | 60.32 | 71.22 | c | 77.20 | a | 84.93 | 90.45 | a | 89.52 | b | 78.66 | e | 70.25 | a | 56.33 | c | ----- | z | 71.35 | a | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 51.98 | 55.78 | 59.64 | 66.22 | 75.71 | 84.70 | 90.49 | 89.35 | 82.79 | 69.74 | 58.28 | 51.46 | 69.49 | |||||||||||||
S.D. | 1.85 | 2.03 | 3.31 | 2.88 | 3.14 | 2.71 | 1.76 | 1.78 | 2.13 | 2.65 | 1.74 | 2.33 | 0.92 | |||||||||||||
SKEW | -0.08 | 0.14 | 0.79 | -0.78 | 0.32 | 0.19 | -0.15 | 0.20 | -0.47 | 0.38 | -0.18 | -0.23 | -0.17 | |||||||||||||
MAX | 54.89 | 59.03 | 68.24 | 71.22 | 81.31 | 89.69 | 93.41 | 92.84 | 85.90 | 74.87 | 61.44 | 55.23 | 70.65 | |||||||||||||
MIN | 48.48 | 52.31 | 54.32 | 60.13 | 71.65 | 80.08 | 87.23 | 86.56 | 78.66 | 66.35 | 54.90 | 48.00 | 68.00 | |||||||||||||
YRS | 15 | 14 | 17 | 16 | 16 | 14 | 14 | 15 | 14 | 14 | 17 | 14 | 8 |