YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.50 | 23.03 | 26.77 | j | ||
1961 | 27.32 | 34.61 | 34.63 | a | 35.83 | 42.90 | 52.53 | 56.03 | 59.00 | 42.93 | 33.42 | 20.83 | 24.10 | 38.68 | ||||||||||||
1962 | 19.32 | 26.46 | 29.00 | 36.47 | 40.10 | 46.13 | 52.18 | c | 52.59 | b | 45.40 | 39.33 | a | 34.90 | 30.26 | 37.68 | ||||||||||
1963 | 15.45 | 29.14 | 32.19 | 36.72 | a | 41.55 | 46.60 | 49.73 | a | 51.62 | e | 49.67 | 40.14 | b | 32.70 | 26.00 | 37.63 | |||||||||
1964 | 26.19 | 25.42 | c | 29.11 | d | 31.07 | a | 37.42 | 43.88 | d | 51.11 | v | 49.50 | e | 44.20 | 36.61 | 31.93 | 19.55 | 34.08 | a | ||||||
1965 | 25.84 | 29.71 | 26.81 | 38.60 | 40.61 | 48.60 | 54.77 | 55.10 | 43.36 | b | 40.36 | c | 35.13 | 26.10 | 38.75 | |||||||||||
1966 | 26.40 | a | 28.84 | c | 30.81 | 34.33 | 42.52 | 47.63 | 53.19 | 53.06 | 48.67 | 35.52 | 32.63 | 31.94 | 38.79 | |||||||||||
1967 | 31.71 | 30.54 | 30.68 | 33.47 | 41.47 | a | 51.50 | 54.71 | 55.86 | b | 51.75 | j | 38.55 | 29.43 | 23.84 | 38.34 | a | |||||||||
1968 | 27.29 | 31.07 | a | 33.87 | 33.00 | 42.81 | 49.97 | 56.19 | 52.32 | c | 46.73 | d | 36.68 | 33.52 | c | 22.48 | b | 38.83 | ||||||||
1969 | 11.48 | 22.96 | 33.13 | 38.13 | 46.16 | 57.69 | q | 55.27 | p | 51.52 | 48.92 | f | 34.84 | 31.10 | 29.26 | 33.18 | c | |||||||||
1970 | 25.39 | 32.18 | 31.23 | 34.27 | 42.42 | 54.03 | 58.24 | b | 52.81 | 43.33 | 35.55 | 30.97 | 25.52 | 38.83 | ||||||||||||
1971 | 28.45 | 27.79 | 29.23 | 35.07 | 44.77 | 48.27 | 57.43 | c | 58.13 | 44.32 | b | 32.58 | l | 32.10 | 23.20 | a | 38.98 | a | ||||||||
1972 | 22.96 | d | 26.97 | 33.59 | b | 34.10 | 46.16 | 52.38 | d | 55.77 | 56.63 | a | 43.87 | 35.09 | h | 31.68 | e | 19.26 | 38.49 | a | ||||||
1973 | 22.55 | 28.86 | 33.86 | b | 35.63 | 42.85 | d | 49.87 | 54.81 | 52.87 | 48.79 | b | 39.21 | b | 33.77 | h | 32.07 | d | 40.12 | a | ||||||
1974 | 19.06 | 32.11 | 33.35 | 38.63 | 41.81 | 52.04 | c | 54.06 | 53.58 | 46.25 | b | 35.50 | a | 34.35 | d | 30.48 | 39.27 | |||||||||
1975 | 21.84 | l | 25.89 | 31.10 | 32.72 | a | 42.17 | a | 48.77 | d | 59.19 | 51.34 | b | 45.17 | 41.07 | b | 30.67 | 26.45 | 39.50 | a | ||||||
1976 | 28.37 | d | 28.14 | a | 28.58 | 36.77 | 40.97 | 46.36 | b | 54.00 | 52.78 | d | 48.67 | c | 35.55 | b | 30.07 | b | 23.59 | d | 37.82 | |||||
1977 | 17.93 | d | 29.89 | 31.33 | g | 37.87 | 41.90 | a | 52.23 | d | 54.42 | e | 57.27 | e | 44.80 | e | 36.74 | h | 29.77 | 28.10 | 39.42 | b | ||||
1978 | 25.46 | e | 32.93 | m | 33.25 | g | 38.07 | 41.16 | f | 51.24 | i | 54.60 | k | 54.44 | f | 46.48 | g | 31.67 | j | 23.00 | 21.45 | 26.99 | h | |||
1979 | 6.68 | 27.89 | 33.57 | h | 37.21 | b | 44.37 | d | 50.16 | e | 55.94 | 55.20 | f | 47.52 | c | 41.39 | 28.20 | 30.00 | 36.94 | b | ||||||
1980 | 17.32 | 29.79 | a | 32.23 | 39.59 | h | 46.35 | 48.00 | e | 54.56 | d | 53.38 | o | 48.75 | f | 37.77 | 33.63 | c | 30.45 | 36.68 | c | |||||
1981 | 32.42 | 30.32 | 35.35 | k | 37.56 | e | 43.29 | 47.00 | h | 51.78 | d | 55.04 | d | 46.40 | e | 37.46 | g | 32.17 | 26.07 | a | 39.45 | c | ||||
1982 | 20.42 | 28.71 | 31.29 | c | 32.24 | a | 42.22 | d | 50.96 | g | 53.85 | k | 53.59 | i | 46.46 | f | 37.35 | 28.40 | 30.00 | x | 31.52 | e | ||||
1983 | 31.65 | 33.75 | 37.52 | 34.14 | h | 44.70 | d | 48.37 | c | 54.56 | m | 57.04 | e | 42.74 | c | 37.97 | a | 37.17 | 15.80 | a | 38.67 | b | ||||
1984 | 25.20 | a | 31.76 | 35.52 | 36.89 | b | 40.83 | b | 48.43 | g | 55.54 | g | 55.71 | g | 46.11 | c | 35.54 | e | 33.67 | l | 18.66 | b | 33.81 | d | ||
1985 | 21.83 | a | 20.79 | 30.04 | e | 37.71 | f | 44.77 | 49.33 | f | 57.50 | e | 52.70 | k | 43.92 | d | 38.35 | h | 18.17 | a | 14.32 | 31.42 | d | |||
1986 | 25.35 | 30.50 | 37.68 | 36.03 | 45.79 | b | 53.40 | e | 51.38 | o | 57.39 | h | 47.46 | d | 38.03 | 34.90 | 26.94 | 37.61 | b | |||||||
1987 | 22.17 | a | 30.79 | 36.06 | 39.88 | d | 47.29 | c | 50.00 | b | 55.88 | g | 54.22 | h | 47.67 | 34.62 | e | 34.10 | 25.16 | 36.77 | b | |||||
1988 | 25.30 | a | 28.03 | 31.87 | 40.52 | a | 43.35 | 49.54 | f | 56.41 | i | 52.28 | f | 44.54 | d | 42.11 | d | 35.47 | 25.45 | 35.18 | c | |||||
1989 | 27.93 | d | 16.93 | 32.77 | a | 41.00 | 43.46 | c | 52.24 | e | 54.62 | e | 53.43 | h | 45.87 | g | 37.84 | 35.56 | c | 27.58 | 36.99 | b | ||||
1990 | 32.24 | b | 28.57 | g | 32.03 | 40.40 | e | 46.15 | k | 50.53 | 58.16 | 57.92 | g | 49.11 | c | 38.11 | c | 35.43 | 17.10 | 39.24 | c | |||||
1991 | 20.00 | a | 32.89 | 31.00 | a | 36.82 | b | 44.30 | d | 47.33 | 54.46 | e | 56.28 | f | 47.80 | 35.43 | j | 34.00 | 31.26 | d | 37.99 | b | ||||
1992 | 31.58 | 34.34 | 34.90 | 40.63 | 44.80 | a | 54.27 | 56.63 | d | 53.77 | e | 45.17 | 39.15 | e | 33.37 | 22.61 | 40.94 | |||||||||
1993 | 14.87 | 21.21 | 30.07 | a | 38.89 | b | 48.81 | 50.03 | 52.06 | 51.16 | f | 44.68 | b | 38.77 | 21.27 | 30.19 | 35.53 | a | ||||||||
1994 | 31.10 | 28.30 | a | 32.00 | a | 41.18 | b | 46.45 | 47.60 | e | 56.04 | d | 54.83 | g | 48.59 | c | 37.71 | 31.75 | b | 27.74 | 38.95 | a | ||||
1995 | 26.79 | c | 32.79 | 32.48 | 35.90 | 44.57 | a | 50.83 | 55.45 | b | 50.21 | g | 49.59 | c | 36.96 | c | 34.00 | 27.43 | a | 38.80 | a | |||||
1996 | 22.23 | 22.62 | 30.94 | 39.53 | 41.52 | 47.03 | 55.23 | a | 53.65 | h | 43.93 | b | 38.35 | 29.86 | a | 23.03 | b | 35.84 | a | |||||||
1997 | 25.03 | a | 29.46 | 34.68 | 36.00 | 46.26 | 48.68 | b | 54.19 | 56.08 | e | 48.93 | 37.43 | a | 32.73 | 27.58 | 39.76 | |||||||||
1998 | 28.26 | 32.32 | 33.94 | 36.00 | 45.68 | c | 50.37 | 60.75 | c | 56.50 | g | 50.32 | b | 36.07 | a | 36.04 | b | 24.90 | 39.51 | a | ||||||
1999 | 31.29 | 32.44 | a | 33.64 | c | 32.77 | 39.97 | 48.54 | b | 52.34 | b | 57.71 | g | 42.50 | 36.55 | 36.37 | 31.87 | a | 38.02 | a | ||||||
2000 | 27.90 | 30.90 | 32.03 | 39.47 | 44.39 | 49.43 | 53.55 | 52.17 | g | 46.50 | 37.62 | b | 26.03 | 24.06 | 37.44 | a | ||||||||||
2001 | 27.13 | 27.42 | b | 32.52 | 37.33 | 43.19 | 48.00 | 54.42 | 56.24 | b | 48.18 | b | 38.19 | 35.59 | c | 28.94 | 39.76 | |||||||||
2002 | 29.84 | 27.61 | 29.29 | 36.17 | 41.94 | 51.52 | a | 56.68 | 52.28 | b | 44.53 | 31.57 | a | 30.77 | 32.42 | 38.72 | ||||||||||
2003 | 32.35 | 28.96 | 36.16 | 38.76 | a | 43.45 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.94 | g | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 24.72 | 28.81 | 32.35 | 36.80 | 43.42 | 49.63 | 55.12 | 54.19 | 46.18 | 37.47 | 31.47 | 25.62 | 38.88 | |||||||||||||
S.D. | 5.92 | 3.79 | 2.47 | 2.60 | 2.29 | 2.42 | 2.27 | 2.48 | 2.28 | 2.23 | 4.35 | 4.54 | 0.92 | |||||||||||||
SKEW | -0.95 | -1.07 | 0.15 | -0.23 | -0.04 | -0.02 | 0.15 | 0.21 | 0.11 | -0.22 | -1.41 | -0.56 | 0.58 | |||||||||||||
MAX | 32.42 | 34.61 | 37.68 | 41.18 | 48.81 | 54.27 | 60.75 | 59.00 | 50.32 | 42.11 | 37.17 | 32.42 | 40.94 | |||||||||||||
MIN | 6.68 | 16.93 | 26.81 | 31.07 | 37.42 | 43.88 | 49.73 | 49.50 | 42.50 | 31.57 | 18.17 | 14.32 | 37.63 | |||||||||||||
YRS | 42 | 41 | 39 | 40 | 41 | 35 | 33 | 23 | 36 | 35 | 41 | 42 | 13 |