YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1968 | ----- | z | ----- | z | 38.38 | b | 47.33 | c | 57.00 | d | 64.86 | a | 67.23 | 65.57 | a | 57.27 | 49.16 | 36.31 | a | 29.17 | a | 51.23 | b | |||
1969 | 33.07 | b | 34.68 | 31.84 | 50.27 | 56.77 | 64.93 | 71.55 | 69.73 | a | 62.63 | 50.10 | b | 38.90 | 33.03 | 49.79 | ||||||||||
1970 | 26.19 | 33.96 | a | 35.68 | 47.67 | 54.52 | 63.52 | a | 68.65 | 67.65 | 60.73 | 45.48 | 37.20 | 33.67 | a | 47.91 | ||||||||||
1971 | 30.68 | 29.86 | 38.16 | 47.50 | 55.94 | 64.03 | a | 67.65 | 63.84 | 59.07 | b | 50.90 | a | 39.93 | 33.52 | 48.42 | ||||||||||
1972 | 29.55 | b | 31.25 | a | 43.06 | 50.67 | 55.39 | 64.70 | c | 66.81 | d | 64.03 | 60.65 | d | 47.40 | a | 31.37 | 27.19 | 47.67 | |||||||
1973 | 25.71 | 29.07 | a | 38.65 | 41.31 | a | 53.52 | 61.20 | 65.61 | 65.39 | 59.50 | d | 49.45 | 40.90 | 26.90 | 46.43 | ||||||||||
1974 | 29.60 | a | 29.50 | 41.45 | b | 45.97 | 57.97 | 62.83 | 68.00 | f | 63.74 | d | 54.79 | a | 50.65 | 38.07 | 30.39 | 45.90 | a | |||||||
1975 | 29.67 | g | 32.30 | a | 36.97 | 44.27 | 52.47 | a | 61.83 | 64.39 | 65.23 | 56.10 | 47.90 | 36.30 | 29.23 | 47.91 | a | |||||||||
1976 | 27.38 | b | 37.38 | 40.07 | a | 49.66 | a | 51.97 | b | 63.37 | 64.67 | g | 64.84 | 59.63 | 42.60 | a | 31.57 | 26.87 | 45.03 | a | ||||||
1977 | 24.48 | 34.11 | 36.29 | 48.30 | 58.23 | 65.97 | 68.55 | 69.29 | 64.30 | 51.61 | 38.00 | 32.70 | a | 49.32 | ||||||||||||
1978 | 24.35 | 29.14 | 37.52 | 50.10 | 56.33 | a | 65.73 | d | 67.96 | h | 65.82 | c | 59.12 | e | 49.29 | g | 41.38 | d | 28.26 | 45.78 | b | |||||
1979 | 24.67 | a | 30.00 | a | 38.97 | b | 48.00 | 54.94 | 61.07 | 65.92 | g | 63.68 | 58.80 | 48.35 | 32.79 | a | 29.57 | c | 44.62 | a | ||||||
1980 | 30.27 | a | 30.55 | 36.10 | 42.82 | b | 55.03 | 67.72 | a | 70.46 | g | 65.50 | a | 60.10 | ----- | z | 34.63 | 31.77 | 45.45 | b | ||||||
1981 | 31.00 | 32.04 | 40.19 | 49.69 | a | 56.10 | 64.47 | 69.42 | 65.58 | 59.33 | 50.74 | 40.00 | 32.84 | 49.28 | ||||||||||||
1982 | 28.03 | b | 30.31 | b | 42.00 | a | 47.97 | a | 55.68 | 62.96 | d | 67.63 | a | 68.61 | c | 62.31 | a | 47.19 | d | 38.19 | d | 29.62 | e | 48.37 | ||
1983 | 28.25 | c | 33.27 | b | 40.67 | a | 42.66 | a | 51.16 | 60.74 | c | 68.43 | j | 67.96 | h | 61.90 | j | 52.62 | j | 39.73 | d | 24.70 | d | 40.15 | d | |
1984 | 27.07 | a | 32.62 | c | 36.93 | a | 46.79 | a | 59.03 | a | 65.55 | a | 67.81 | 67.31 | b | 58.50 | d | 48.68 | 39.39 | b | 34.00 | d | 48.64 | |||
1985 | 26.04 | c | 27.71 | g | 42.33 | d | 51.58 | d | 58.65 | 62.03 | 67.04 | d | 68.45 | 60.33 | 51.00 | 42.96 | c | 28.45 | 50.81 | a | ||||||
1986 | 31.42 | 35.79 | 43.55 | 51.67 | 56.26 | 63.77 | 67.32 | 67.45 | k | ----- | z | 51.17 | a | 37.83 | 32.93 | c | 47.17 | b | ||||||||
1987 | 30.03 | a | 36.46 | 37.23 | 45.10 | 56.06 | 63.30 | 66.94 | 66.60 | a | 58.63 | 51.13 | 38.34 | a | 29.87 | a | 48.31 | |||||||||
1988 | 28.70 | a | 32.45 | 38.20 | a | 46.17 | 55.81 | 65.03 | 67.35 | 67.79 | c | 59.47 | 51.42 | 41.70 | 29.10 | b | 48.60 | |||||||||
1989 | 30.26 | 30.93 | a | 39.32 | 49.00 | a | 59.45 | 62.87 | 69.07 | b | 67.35 | 57.97 | a | 48.37 | a | 37.48 | a | 24.00 | b | 48.01 | ||||||
1990 | 30.32 | 34.68 | 40.59 | b | 49.70 | 58.48 | b | 71.39 | b | 68.84 | 64.42 | 62.10 | 47.80 | a | 41.00 | a | 29.57 | c | 49.91 | |||||||
1991 | 28.74 | 34.96 | c | 40.80 | a | 47.83 | 57.97 | 65.37 | 66.61 | 66.29 | 56.62 | a | 47.97 | a | 34.07 | 32.26 | 48.29 | |||||||||
1992 | 29.57 | a | 36.07 | 41.45 | 49.34 | a | 55.37 | a | 62.90 | 66.67 | d | 64.71 | c | 59.47 | 50.74 | d | 34.00 | c | 31.38 | e | 48.47 | |||||
1993 | 32.75 | c | 33.44 | c | 39.07 | b | 47.93 | c | 55.18 | c | 64.80 | e | 70.48 | f | 68.61 | 59.37 | 47.87 | a | 35.10 | 31.22 | d | 46.85 | a | |||
1994 | 30.17 | a | 31.91 | e | 42.21 | b | 47.57 | b | 60.41 | b | 69.14 | a | 69.21 | b | 69.09 | h | 60.43 | 51.16 | 40.34 | a | 35.76 | f | 50.26 | b | ||
1995 | 31.48 | f | 37.12 | b | 41.21 | b | 46.60 | 57.62 | b | 64.87 | 70.04 | c | 70.26 | 60.76 | a | 50.06 | 40.75 | b | 33.81 | d | 52.10 | a | ||||
1996 | 29.26 | d | 37.04 | b | 36.00 | a | 48.97 | 64.45 | 69.00 | 70.13 | 68.03 | 59.33 | 48.62 | e | 38.90 | 33.10 | a | 50.24 | ||||||||
1997 | 29.97 | a | 32.57 | 41.77 | 45.21 | b | 57.13 | 64.27 | 69.23 | a | 68.32 | 63.80 | 49.45 | 37.20 | 27.76 | b | 48.89 | |||||||||
1998 | 32.17 | a | 33.46 | 38.29 | 44.80 | 60.84 | 68.20 | 71.19 | 68.33 | a | 65.10 | 54.06 | 44.73 | 32.30 | a | 51.12 | ||||||||||
1999 | 34.16 | 37.64 | 43.45 | b | 49.13 | 55.96 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.10 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 29.10 | 33.15 | 39.32 | 47.55 | 56.64 | 64.59 | 68.12 | 66.61 | 59.87 | 49.32 | 38.04 | 30.31 | 48.76 | |||||||||||||
S.D. | 2.57 | 2.63 | 2.68 | 2.56 | 2.70 | 2.48 | 1.70 | 1.96 | 2.33 | 2.23 | 3.22 | 2.74 | 1.07 | |||||||||||||
SKEW | -0.21 | 0.14 | -0.50 | -0.61 | 0.46 | 0.83 | 0.08 | 0.10 | 0.26 | -0.78 | -0.31 | -0.51 | 0.20 | |||||||||||||
MAX | 34.16 | 37.64 | 43.55 | 51.67 | 64.45 | 71.39 | 71.55 | 70.26 | 65.10 | 54.06 | 44.73 | 34.00 | 51.12 | |||||||||||||
MIN | 24.35 | 29.07 | 31.84 | 41.31 | 51.16 | 60.74 | 64.39 | 63.68 | 54.79 | 42.60 | 31.37 | 24.00 | 46.43 | |||||||||||||
YRS | 29 | 30 | 32 | 32 | 31 | 31 | 24 | 28 | 29 | 28 | 31 | 30 | 18 |