YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 77.31 | f | 76.52 | e | 74.00 | b | 70.04 | f | 62.50 | f | 49.29 | d | 45.95 | 61.44 | h | |
1962 | 43.84 | b | 51.09 | 49.11 | 65.53 | a | 67.28 | a | 75.10 | 75.32 | 78.74 | 73.10 | 65.55 | b | 56.69 | a | 47.47 | 62.40 | ||||||||
1963 | 44.21 | c | 51.64 | 53.23 | a | 60.19 | a | 70.90 | 74.97 | 78.48 | 74.05 | 73.42 | 66.16 | ----- | z | 46.68 | a | 63.09 | a | |||||||
1964 | 41.89 | ----- | z | ----- | z | 58.22 | a | 68.58 | 75.38 | 78.08 | a | 74.55 | 69.14 | b | 64.45 | a | 49.80 | b | 48.00 | 62.81 | b | |||||
1965 | 47.55 | ----- | z | ----- | z | 59.76 | c | ----- | z | ----- | z | 77.42 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.58 | i | ||
1966 | ----- | z | ----- | z | ----- | z | ----- | z | 69.10 | 75.67 | 77.39 | 73.79 | 70.32 | 61.97 | 55.13 | 45.26 | 66.08 | d | ||||||||
1967 | 46.73 | 49.04 | 56.95 | 57.55 | 65.48 | 72.22 | 75.86 | b | 75.18 | a | 70.37 | ----- | z | ----- | z | 42.50 | 61.19 | b | ||||||||
1968 | 44.71 | 52.12 | 51.25 | a | 57.15 | 67.03 | 76.92 | 75.77 | ----- | z | 70.98 | 65.18 | 52.67 | 45.18 | 59.91 | a | ||||||||||
1969 | 50.27 | 47.93 | 49.19 | 62.50 | 68.03 | a | 75.60 | 78.03 | 78.17 | a | 73.15 | 62.74 | 52.45 | a | 48.13 | 62.18 | ||||||||||
1970 | 46.15 | 51.02 | 51.03 | 57.21 | a | 67.03 | 75.65 | 76.31 | 74.73 | 70.10 | a | 59.85 | 54.83 | 49.50 | a | 61.12 | ||||||||||
1971 | 48.22 | a | 48.62 | 56.15 | 58.90 | 65.13 | 74.60 | 78.11 | 73.25 | a | 71.22 | 58.97 | 52.48 | 45.55 | a | 60.93 | ||||||||||
1972 | 47.63 | 51.33 | 59.90 | 61.03 | 65.57 | c | 74.30 | 77.98 | 73.98 | 70.33 | 62.48 | 49.07 | 46.91 | b | 61.71 | |||||||||||
1973 | 43.48 | a | 47.48 | 47.78 | a | 55.21 | a | 67.17 | a | 75.29 | a | 75.97 | 76.24 | 72.58 | 64.35 | 55.03 | 48.69 | 60.77 | ||||||||
1974 | 46.61 | 48.30 | 56.24 | 60.64 | a | 70.31 | 81.02 | 76.90 | 74.26 | 69.63 | 61.42 | 51.68 | 43.69 | b | 61.73 | |||||||||||
1975 | 46.35 | 47.18 | 51.74 | 55.87 | 65.61 | 76.82 | 76.79 | 77.35 | 70.00 | 62.66 | b | 52.78 | 46.95 | 60.84 | ||||||||||||
1976 | 45.10 | 51.43 | 53.63 | 59.70 | 67.98 | 75.78 | 74.26 | 75.32 | 68.90 | ----- | z | 50.57 | 44.98 | a | 60.70 | a | ||||||||||
1977 | 43.31 | 50.04 | 49.24 | 58.87 | 63.52 | 76.63 | 76.45 | 76.38 | a | 72.92 | 63.91 | b | 54.45 | 50.55 | 61.36 | |||||||||||
1978 | 46.58 | a | 46.43 | 54.97 | 58.09 | c | 66.80 | i | 78.38 | f | 78.40 | 74.29 | 70.30 | 64.29 | 52.15 | ----- | z | 60.61 | c | |||||||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 78.50 | 73.65 | 73.65 | 67.10 | 50.48 | 47.73 | 65.18 | f | ||||||
1980 | 46.39 | 48.71 | a | 50.69 | ----- | z | ----- | z | 78.36 | b | 80.10 | 75.24 | b | 73.52 | a | 60.65 | a | 51.11 | c | ----- | z | 62.75 | c | |||
1981 | 46.84 | 51.77 | 51.31 | 61.88 | 66.74 | 78.03 | 76.56 | 76.68 | 71.98 | a | 62.33 | a | 55.93 | 50.47 | 62.54 | |||||||||||
1982 | ----- | z | ----- | z | 53.98 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.98 | k |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | 68.67 | a | 77.83 | 79.10 | b | 77.13 | a | 76.43 | 68.78 | a | 52.87 | 49.19 | 68.75 | d | ||||
1993 | 50.15 | 50.79 | 57.48 | 64.92 | 71.65 | 79.42 | 78.21 | 76.00 | b | 73.58 | 65.68 | 55.52 | b | 50.26 | 64.47 | |||||||||||
1994 | 51.24 | d | 50.54 | 56.78 | a | 62.79 | a | 70.03 | a | 83.03 | a | 81.61 | 79.91 | b | 75.20 | 64.62 | c | 53.93 | 49.27 | 64.91 | ||||||
1995 | 47.74 | 54.79 | b | 57.14 | b | 60.71 | a | 66.43 | a | 76.58 | 81.05 | 80.64 | b | 75.98 | a | 70.10 | 60.38 | b | 52.16 | c | 65.31 | |||||
1996 | 52.87 | 55.98 | a | 56.48 | a | 65.23 | b | 74.45 | 81.87 | 79.27 | a | 77.34 | b | 71.78 | a | ----- | z | ----- | z | ----- | z | 68.36 | c | |||
1997 | 43.98 | e | ----- | z | 56.17 | e | 56.69 | d | 69.70 | f | 74.14 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.75 | h |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 46.60 | 50.31 | 53.66 | 59.94 | 67.94 | 76.75 | 77.63 | 75.87 | 72.02 | 63.96 | 53.15 | 47.50 | 62.33 | |||||||||||||
S.D. | 2.71 | 2.44 | 3.39 | 2.96 | 2.53 | 2.60 | 1.73 | 2.04 | 2.11 | 2.78 | 2.73 | 2.42 | 1.58 | |||||||||||||
SKEW | 0.50 | 0.53 | -0.09 | 0.41 | 0.70 | 0.87 | 0.42 | 0.79 | 0.44 | 0.31 | 0.64 | -0.12 | 0.89 | |||||||||||||
MAX | 52.87 | 55.98 | 59.90 | 65.53 | 74.45 | 83.03 | 81.61 | 80.64 | 76.43 | 70.10 | 60.38 | 52.16 | 65.31 | |||||||||||||
MIN | 41.89 | 46.43 | 47.78 | 55.21 | 63.52 | 72.22 | 74.26 | 73.25 | 68.90 | 58.97 | 49.07 | 42.50 | 60.77 | |||||||||||||
YRS | 23 | 20 | 22 | 22 | 21 | 23 | 26 | 24 | 24 | 21 | 22 | 22 | 13 |