YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 65.37 | d | 54.38 | f | 43.26 | h | 34.11 | c | 19.12 | n | 49.74 | j |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 55.91 | s | 48.57 | a | 40.04 | f | 25.86 | c | 37.21 | j |
1963 | 11.75 | g | 32.18 | k | 34.08 | g | 37.67 | r | 56.88 | o | 58.20 | o | 71.96 | f | 65.32 | f | 61.15 | q | 47.62 | r | 36.21 | f | 23.52 | j | ----- | z |
1964 | 22.23 | 23.90 | 31.00 | c | 41.48 | c | 53.30 | d | 54.00 | 63.00 | d | 66.62 | e | 58.32 | e | 51.85 | e | 32.19 | d | 29.27 | e | 43.93 | ||||
1965 | 26.44 | d | 26.00 | f | 30.61 | c | 41.68 | h | ----- | z | 58.39 | g | 66.21 | b | 64.36 | c | 58.04 | d | 48.70 | d | 42.64 | e | 27.42 | e | 45.55 | d |
1966 | 21.78 | d | 24.17 | d | 35.96 | c | 43.80 | e | 55.89 | c | 63.55 | a | 72.59 | b | 71.04 | e | 59.04 | b | 46.37 | a | 37.29 | b | 26.86 | b | 46.53 | |
1967 | 21.96 | c | 28.96 | c | 38.93 | d | 39.54 | b | 51.11 | d | 59.18 | b | 68.61 | c | 66.14 | c | 57.50 | d | 47.87 | a | 37.97 | 17.00 | b | 44.56 | ||
1968 | 17.20 | a | 33.52 | d | 35.90 | b | 39.63 | c | 50.07 | a | 62.36 | e | 66.29 | c | 61.18 | c | 56.75 | f | 47.74 | d | 37.29 | m | 21.57 | x | 45.99 | c |
1969 | 28.43 | c | 29.14 | 31.97 | 42.11 | b | 54.55 | 57.00 | e | 68.96 | c | 67.70 | d | 60.21 | b | 41.30 | d | 31.63 | c | 27.54 | c | 45.04 | ||||
1970 | 24.87 | a | 32.77 | b | 32.36 | c | 34.31 | d | 53.64 | c | 60.48 | c | 66.89 | d | 68.54 | g | 55.58 | f | 40.82 | c | 32.00 | e | 27.52 | d | 40.57 | b |
1971 | 24.79 | b | 28.85 | b | 30.62 | g | 40.81 | d | 47.13 | h | 65.56 | c | 71.12 | g | 67.45 | t | 56.96 | e | 43.33 | d | 32.96 | c | 24.04 | e | 39.66 | d |
1972 | 24.26 | 28.89 | a | 40.29 | c | 45.11 | c | 51.23 | 62.69 | a | 68.60 | a | 65.87 | a | 58.76 | a | 46.66 | b | 31.04 | b | 20.93 | b | 45.36 | |||
1973 | 15.38 | o | 26.54 | d | 32.26 | l | 38.96 | d | 51.76 | b | 59.40 | e | ----- | z | 66.32 | 56.68 | e | 47.29 | 37.50 | b | 26.45 | b | 45.66 | c | ||
1974 | 19.50 | a | 22.44 | a | 41.17 | b | 41.69 | d | 55.83 | b | 64.21 | f | 66.57 | h | 66.15 | e | 58.92 | d | 49.30 | d | 34.41 | c | 25.52 | h | 43.27 | c |
1975 | 19.83 | b | 27.69 | b | 33.18 | c | 37.64 | b | 48.25 | g | 59.48 | c | 65.52 | d | 65.36 | c | 58.44 | l | 41.96 | f | 32.38 | a | 25.73 | a | 40.76 | c |
1976 | 20.22 | h | 32.68 | g | 36.44 | o | 43.08 | f | 53.23 | e | 59.07 | a | 67.37 | a | 63.39 | 57.10 | 41.55 | 31.40 | 24.62 | g | 53.30 | e | ||||
1977 | 18.87 | a | 29.50 | 31.27 | a | 43.23 | 47.87 | 64.20 | e | 65.81 | o | 66.78 | d | 60.50 | b | 48.54 | e | 35.83 | 32.62 | b | 43.56 | a | ||||
1978 | 28.86 | c | 30.18 | 40.83 | g | 44.28 | e | 49.48 | d | ----- | z | 68.81 | d | 66.46 | c | 58.37 | c | 50.21 | c | 37.24 | a | 18.61 | 45.25 | b | ||
1979 | 19.16 | 24.56 | a | 34.28 | b | 44.60 | e | 51.12 | g | 61.22 | c | 69.00 | b | 65.58 | 62.07 | c | 50.87 | a | 30.57 | 25.45 | 44.30 | a | ||||
1980 | 30.03 | a | 31.85 | b | 32.53 | a | 42.50 | 49.10 | b | 63.60 | 69.00 | 67.87 | 59.03 | a | 45.10 | 35.27 | 32.74 | 46.55 | ||||||||
1981 | 28.65 | 29.07 | 35.39 | 47.07 | 51.77 | 64.86 | b | 68.19 | 65.42 | 59.07 | 45.42 | 39.08 | e | 29.29 | c | 46.94 | ||||||||||
1982 | 25.84 | 26.00 | 36.16 | 42.07 | a | 51.35 | 59.59 | a | 66.03 | 63.29 | 55.83 | 38.45 | 31.25 | b | 25.32 | 43.43 | ||||||||||
1983 | 23.61 | 30.00 | 34.32 | 34.87 | 47.23 | a | 56.18 | b | 61.96 | e | 62.66 | b | 56.53 | 44.83 | b | 36.87 | 29.84 | 43.24 | ||||||||
1984 | 23.06 | 27.76 | 35.10 | 40.23 | 58.20 | a | 60.70 | c | 67.03 | a | 64.40 | f | 58.12 | d | 41.32 | f | 35.43 | 28.27 | a | 43.39 | b | |||||
1985 | 25.03 | 26.27 | b | 36.28 | b | 45.14 | b | 54.93 | b | 64.93 | 69.42 | 68.03 | a | 54.46 | b | 47.93 | a | 35.70 | 28.10 | 46.35 | ||||||
1986 | 30.03 | 34.82 | 41.19 | 44.90 | 52.28 | b | 65.37 | 67.29 | 67.39 | 56.10 | 43.82 | c | 36.47 | 28.55 | 47.35 | |||||||||||
1987 | 24.17 | b | 30.71 | 33.94 | 45.90 | 53.39 | 64.07 | b | 64.84 | 64.48 | 58.57 | 49.69 | b | 34.53 | 23.45 | 45.65 | ||||||||||
1988 | 20.84 | 29.44 | b | 34.33 | d | 43.13 | 58.77 | 55.43 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.87 | 35.40 | f | ||||
1989 | 20.13 | a | 28.64 | 42.00 | 49.96 | g | 57.27 | e | 62.63 | 67.80 | a | 64.34 | b | 58.96 | b | 49.76 | f | 34.48 | g | 25.56 | d | 47.48 | c | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 23.73 | 28.57 | 35.37 | 41.87 | 52.83 | 61.37 | 67.31 | 65.73 | 58.14 | 46.36 | 34.82 | 26.35 | 45.41 | |||||||||||||
S.D. | 3.73 | 3.07 | 3.44 | 3.31 | 3.16 | 3.16 | 2.32 | 2.08 | 1.70 | 3.50 | 3.02 | 3.72 | 1.39 | |||||||||||||
SKEW | 0.15 | -0.04 | 0.58 | -0.71 | 0.16 | -0.57 | -0.32 | 0.15 | 0.05 | -0.57 | 0.54 | -0.73 | -0.26 | |||||||||||||
MAX | 30.03 | 34.82 | 42.00 | 47.07 | 58.77 | 65.56 | 72.59 | 71.04 | 62.07 | 51.85 | 42.64 | 32.74 | 47.35 | |||||||||||||
MIN | 17.20 | 22.44 | 30.61 | 34.31 | 47.23 | 54.00 | 61.96 | 61.18 | 54.46 | 38.45 | 30.57 | 17.00 | 43.24 | |||||||||||||
YRS | 24 | 24 | 22 | 23 | 22 | 22 | 21 | 23 | 22 | 23 | 24 | 24 | 12 |