YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.13 | 54.23 | 50.68 | 31.83 | 26.29 | 44.83 | g | |||||
1965 | 29.71 | 29.11 | 26.68 | 33.31 | a | 40.63 | a | 48.87 | 59.19 | 59.58 | 47.62 | a | 50.55 | 33.03 | 28.63 | a | 40.58 | |||||||||
1966 | 24.32 | 22.50 | 34.94 | 42.03 | 48.48 | b | 56.40 | 61.46 | e | 62.23 | a | 54.83 | 43.62 | b | 34.50 | 29.52 | 42.90 | |||||||||
1967 | 29.27 | a | 32.54 | 31.54 | c | 28.52 | a | 43.81 | 50.14 | a | 62.47 | a | 61.77 | 52.40 | 48.19 | 36.63 | 22.73 | a | 41.67 | |||||||
1968 | 30.97 | 31.29 | a | 31.43 | a | 35.03 | 45.03 | 58.10 | 60.71 | 54.00 | 53.87 | 45.52 | 32.50 | 23.48 | 41.83 | |||||||||||
1969 | 27.06 | 23.07 | a | 27.35 | 39.10 | 49.55 | 52.17 | 61.97 | 63.42 | 55.53 | 38.00 | 35.07 | 28.84 | 41.76 | ||||||||||||
1970 | 26.65 | 30.50 | 28.48 | 31.83 | a | 47.30 | a | 55.83 | 62.16 | 61.52 | 52.63 | 41.80 | a | 34.48 | a | 25.37 | a | 41.55 | ||||||||
1971 | 27.81 | 26.41 | a | 31.86 | b | 36.80 | 39.90 | 55.28 | a | 64.60 | a | 60.63 | a | 52.61 | b | 39.81 | 32.80 | 21.70 | a | 40.85 | ||||||
1972 | 27.26 | 31.14 | 39.16 | 37.83 | a | 48.37 | a | 56.19 | c | 66.23 | a | 60.73 | a | ----- | z | 37.87 | a | 26.80 | 24.58 | 41.47 | a | |||||
1973 | 23.90 | a | 27.26 | a | 25.23 | a | 33.97 | 48.39 | 56.20 | 62.68 | 61.06 | 53.60 | 46.33 | a | 31.07 | 31.23 | 41.74 | |||||||||
1974 | 22.93 | b | 28.63 | a | 33.41 | b | 36.57 | 50.39 | 62.83 | a | 60.81 | 61.13 | a | 56.90 | 44.50 | a | 35.00 | a | 25.80 | a | 43.24 | |||||
1975 | 28.55 | b | 25.57 | e | 28.69 | e | 29.65 | d | 42.59 | b | 54.18 | b | 61.40 | a | 59.57 | a | 54.73 | d | 44.26 | 35.71 | b | 33.71 | c | 41.55 | ||
1976 | 32.42 | e | 29.50 | a | 28.96 | f | 36.04 | e | 49.16 | 55.73 | 62.39 | 58.72 | b | 51.21 | b | 43.74 | 40.56 | e | 32.86 | b | 44.76 | a | ||||
1977 | 29.24 | b | 33.52 | a | 26.74 | 42.43 | b | 39.47 | a | 59.04 | b | 61.34 | b | 61.59 | d | 53.44 | c | 47.83 | g | 37.17 | 30.00 | g | 44.40 | b | ||
1978 | 27.78 | d | 26.60 | c | 35.07 | d | 35.04 | b | 44.11 | d | 56.96 | e | 63.10 | a | 61.70 | d | 52.75 | b | 47.73 | a | 33.46 | d | 23.84 | 42.35 | ||
1979 | 20.57 | c | 25.28 | c | 29.18 | c | 36.74 | g | 45.83 | b | 56.48 | c | 63.10 | b | 57.14 | b | 58.30 | g | 47.84 | f | 31.65 | d | 34.93 | d | 40.46 | c |
1980 | 29.16 | f | 31.67 | b | 26.26 | d | 36.56 | e | 40.80 | f | 54.44 | e | 63.00 | d | 60.10 | b | 53.67 | c | 45.81 | d | 37.33 | c | 38.07 | b | 44.69 | b |
1981 | 31.35 | h | 32.35 | e | 28.39 | c | 42.13 | g | 43.93 | d | 60.62 | d | 63.63 | d | 61.70 | d | 53.16 | e | 37.96 | h | 35.12 | d | 31.88 | e | 45.64 | c |
1982 | 25.96 | e | 29.00 | e | 28.57 | h | 35.60 | j | 45.68 | i | 53.54 | f | 59.00 | e | 58.85 | e | 49.67 | f | 39.37 | d | 30.08 | d | 30.31 | e | 38.94 | e |
1983 | 33.47 | l | 28.50 | h | 28.53 | l | 32.53 | o | 45.76 | n | 52.59 | m | 60.06 | o | 57.13 | h | 56.76 | m | 43.04 | h | 35.67 | r | 25.96 | g | ----- | z |
1984 | 30.55 | 31.04 | a | 31.43 | a | 35.13 | 51.62 | b | 55.28 | a | 61.57 | a | 59.86 | c | 54.64 | b | 33.93 | d | ----- | z | 21.86 | c | 42.45 | a | ||
1985 | 25.00 | d | 24.44 | a | 25.50 | a | 40.79 | b | 46.63 | a | 60.10 | a | 64.21 | b | 62.27 | e | 49.26 | c | 41.74 | 28.29 | b | 32.77 | a | 41.75 | ||
1986 | 35.48 | 26.64 | 34.00 | 36.03 | a | 46.83 | a | 58.67 | 59.16 | 61.48 | 46.50 | 39.47 | a | 34.00 | b | 29.06 | 42.28 | |||||||||
1987 | 25.43 | c | 23.59 | a | 26.65 | 42.71 | b | 44.70 | a | 58.67 | 59.80 | a | 59.13 | 55.23 | 46.17 | a | 31.43 | b | 22.70 | a | 41.35 | |||||
1988 | 24.84 | 32.62 | 30.48 | b | 37.52 | a | 45.68 | 58.72 | a | 64.72 | b | 59.87 | 54.00 | 51.41 | b | 30.93 | 26.38 | b | 43.10 | |||||||
1989 | 25.90 | a | 24.73 | b | 34.67 | a | 44.79 | b | 47.03 | 56.90 | 66.23 | 58.35 | 54.70 | 44.00 | c | 37.57 | 32.39 | 43.94 | ||||||||
1990 | 25.00 | 24.41 | a | 30.77 | 39.40 | 44.81 | 58.73 | 63.48 | 59.83 | a | 55.28 | a | 46.67 | a | 34.70 | 24.07 | a | 42.26 | ||||||||
1991 | 27.26 | 34.18 | 23.29 | 33.23 | 41.90 | a | 52.79 | a | 62.87 | 60.77 | a | 54.63 | 45.19 | 32.00 | 28.57 | a | 41.39 | |||||||||
1992 | 29.48 | 26.66 | 27.43 | a | 41.90 | a | 46.19 | 53.66 | a | 59.23 | a | 60.65 | 55.60 | 46.32 | 30.70 | c | 23.53 | a | 41.78 | |||||||
1993 | 24.00 | 22.14 | 32.94 | 37.57 | 47.37 | a | 52.40 | 60.10 | 59.87 | 55.75 | b | 44.28 | b | 30.83 | 29.94 | 41.43 | ||||||||||
1994 | 30.97 | 24.00 | a | 35.71 | 39.32 | b | 46.72 | b | 61.60 | 66.00 | 64.33 | a | 55.73 | 41.90 | a | 27.52 | a | 28.13 | 43.49 | |||||||
1995 | 24.35 | ----- | z | 30.19 | 35.70 | c | 40.19 | 51.79 | b | 62.52 | ----- | z | 58.23 | 49.81 | 42.86 | a | 31.10 | a | 42.67 | b | ||||||
1996 | 29.40 | a | 33.61 | a | 34.48 | b | 43.24 | a | ----- | z | 63.17 | 67.81 | 66.87 | 55.30 | 44.74 | 36.10 | a | 30.28 | b | 45.91 | a | |||||
1997 | 28.79 | b | 29.59 | a | 41.61 | 37.70 | 53.03 | a | 59.17 | a | 66.03 | a | 64.93 | a | 56.83 | 49.14 | c | 38.86 | a | ----- | z | 47.79 | a | |||
1998 | 31.77 | 26.36 | 36.03 | b | 36.28 | a | 45.10 | 55.38 | a | 67.10 | a | 67.83 | b | 58.24 | a | 45.55 | b | 39.25 | b | 35.55 | b | 45.37 | ||||
1999 | 35.70 | a | 36.31 | b | 40.77 | a | 36.76 | a | 50.27 | a | 61.63 | c | 65.77 | e | 65.13 | a | 62.55 | a | 59.86 | b | 49.47 | 37.81 | e | 50.17 | ||
2000 | 36.10 | b | 37.58 | c | 41.93 | b | 53.48 | e | 58.68 | 65.77 | 69.53 | a | 67.77 | a | 62.52 | a | 48.29 | 38.61 | b | 39.90 | b | 51.68 | ||||
2001 | 34.13 | 35.37 | a | 48.00 | q | 34.69 | a | 49.93 | d | 58.72 | a | 65.83 | h | 70.78 | d | 68.27 | 61.30 | d | 40.90 | a | 27.08 | g | 50.45 | c | ||
2002 | 28.62 | b | 33.23 | b | 34.87 | 45.90 | a | 57.75 | c | 71.00 | c | 74.87 | a | 70.77 | 58.60 | 46.97 | 40.61 | b | 30.29 | 49.46 | ||||||
2003 | 40.29 | 32.41 | a | 36.34 | b | ----- | z | ----- | z | ----- | z | 79.73 | a | 68.57 | a | 58.47 | 52.03 | a | 29.25 | b | 28.70 | a | 47.31 | c | ||
2004 | 27.04 | c | 22.77 | c | ----- | z | 37.90 | a | 48.23 | 59.30 | 62.37 | a | 60.03 | a | 54.36 | b | ----- | z | 28.10 | 30.00 | d | 43.01 | b | |||
2005 | 26.77 | 25.18 | 29.60 | a | 35.59 | a | 45.47 | a | 51.83 | 66.83 | g | 58.68 | 53.64 | b | 45.16 | 36.97 | a | 30.32 | 39.93 | a | ||||||
2006 | 27.68 | 28.83 | d | 26.38 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.26 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.43 | 28.79 | 31.75 | 37.79 | 46.81 | 57.23 | 63.75 | 61.86 | 55.04 | 45.72 | 34.59 | 29.13 | 43.18 | |||||||||||||
S.D. | 4.05 | 4.16 | 4.76 | 4.73 | 4.31 | 4.37 | 4.15 | 3.59 | 3.88 | 5.40 | 4.63 | 4.64 | 2.94 | |||||||||||||
SKEW | 0.81 | 0.18 | 0.42 | 0.93 | 0.71 | 0.71 | 1.99 | 0.86 | 0.92 | 0.70 | 0.77 | 0.32 | 1.90 | |||||||||||||
MAX | 40.29 | 37.58 | 41.93 | 53.48 | 58.68 | 71.00 | 79.73 | 70.78 | 68.27 | 61.30 | 49.47 | 39.90 | 51.68 | |||||||||||||
MIN | 20.57 | 22.14 | 23.29 | 28.52 | 39.47 | 48.87 | 59.00 | 54.00 | 46.50 | 33.93 | 26.80 | 21.70 | 40.58 | |||||||||||||
YRS | 39 | 40 | 36 | 36 | 36 | 38 | 38 | 40 | 38 | 37 | 40 | 38 | 25 |