YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.91 | o | 55.33 | 45.50 | l | 31.90 | 19.23 | 35.49 | i | |||
1964 | 14.27 | 13.21 | 19.95 | ----- | z | 50.27 | g | 53.16 | a | 62.44 | 57.56 | 51.48 | 43.80 | a | 28.13 | 16.53 | a | 36.05 | b | |||||||
1965 | 22.18 | 18.39 | 20.16 | 34.90 | 43.84 | 51.19 | a | 59.32 | a | 56.68 | 46.72 | 43.98 | 31.62 | a | 20.97 | 37.50 | ||||||||||
1966 | 14.31 | 17.07 | 30.50 | 39.22 | 48.48 | 52.80 | 63.18 | 59.08 | 51.05 | 40.47 | b | ----- | z | 18.73 | e | 39.53 | a | |||||||||
1967 | 22.10 | b | 17.31 | a | 32.37 | ----- | z | 45.29 | g | 52.96 | b | 61.81 | b | 59.71 | 52.15 | d | 44.11 | d | 31.36 | h | 19.14 | j | 42.82 | d | ||
1968 | 19.05 | j | 24.43 | i | 27.86 | i | 32.98 | j | 45.55 | i | 55.05 | k | 58.90 | j | 56.73 | i | 50.42 | j | 43.87 | h | 27.58 | k | 19.68 | k | ----- | z |
1969 | 22.48 | c | 21.17 | d | 24.41 | b | 40.83 | d | 51.43 | a | 51.91 | b | 61.60 | f | 63.91 | d | 54.43 | b | 36.90 | k | 26.70 | e | 23.39 | d | 38.07 | b |
1970 | 19.14 | b | 24.98 | c | 26.12 | c | 33.00 | e | 48.76 | h | 54.59 | b | 60.70 | h | 60.03 | l | 49.42 | j | 37.39 | i | 31.68 | k | 23.77 | k | 31.57 | g |
1971 | 19.95 | k | 23.16 | i | 24.95 | k | 38.25 | h | 45.85 | k | 55.48 | h | 60.62 | k | 59.45 | i | 50.14 | i | 42.44 | n | 28.22 | l | 16.02 | k | ----- | z |
1972 | 19.69 | m | 22.75 | i | 31.27 | k | 41.33 | l | 46.48 | i | 55.89 | h | 59.27 | k | 58.30 | i | 51.03 | m | 42.80 | k | 26.31 | l | 16.67 | p | ----- | z |
1973 | 16.05 | l | 19.38 | k | 26.27 | i | 31.45 | i | 47.50 | h | 51.87 | ----- | z | 57.55 | j | 49.89 | l | 44.02 | j | 32.62 | j | 21.53 | n | 51.87 | k | |
1974 | 15.10 | j | 16.97 | m | 30.52 | j | 36.00 | h | 47.81 | 55.73 | 59.68 | 55.10 | e | 50.65 | j | 42.98 | j | 27.50 | i | 17.16 | l | 54.58 | h | |||
1975 | 18.02 | j | 15.29 | i | 24.50 | k | 27.85 | j | 42.43 | d | 50.23 | 58.74 | 56.61 | 50.40 | 39.52 | b | 25.28 | a | 21.48 | 43.09 | d | |||||
1976 | 14.44 | 22.71 | 21.06 | 34.27 | 43.90 | 52.62 | 61.90 | 56.05 | 50.10 | 35.30 | a | 28.43 | a | 19.52 | 36.69 | |||||||||||
1977 | 14.47 | 20.25 | 21.08 | 37.68 | 44.84 | 57.18 | 60.10 | 58.29 | 53.22 | 42.56 | 30.13 | 21.29 | 38.42 | |||||||||||||
1978 | 19.92 | 20.98 | 31.92 | 38.57 | 43.71 | 55.02 | 61.31 | 59.10 | a | 54.10 | 44.10 | 32.17 | 16.52 | 39.78 | ||||||||||||
1979 | 10.92 | 17.96 | 27.92 | 35.12 | 45.66 | 52.40 | 60.48 | 58.52 | b | 54.55 | 44.06 | 22.60 | 21.32 | 37.63 | ||||||||||||
1980 | 22.31 | 25.29 | 24.97 | a | 33.28 | 45.15 | 55.10 | 61.65 | 57.97 | 51.12 | 38.97 | 29.60 | 29.97 | 39.61 | ||||||||||||
1981 | 24.84 | 22.52 | 28.81 | 40.23 | 45.50 | 55.92 | 61.61 | 60.52 | 54.78 | 43.33 | a | 34.32 | b | 23.94 | 41.36 | |||||||||||
1982 | 19.08 | a | 19.46 | a | 29.19 | 34.83 | 45.65 | 53.18 | 60.02 | 60.92 | 50.33 | 36.45 | 25.68 | 20.61 | 37.95 | |||||||||||
1983 | 20.98 | 22.48 | 28.08 | 29.63 | 40.66 | 50.17 | a | 58.47 | 60.52 | 53.27 | 44.71 | 31.65 | 21.21 | e | 38.49 | |||||||||||
1984 | 16.10 | b | 20.12 | 26.81 | 33.78 | 48.29 | 53.03 | 62.16 | 60.38 | c | 53.77 | 36.68 | 30.52 | 22.19 | 38.65 | |||||||||||
1985 | 17.29 | 14.10 | b | 26.77 | 36.00 | 45.44 | 53.55 | a | 58.71 | 56.66 | 45.42 | 38.29 | b | 23.98 | 17.47 | 36.14 | ||||||||||
1986 | 18.55 | c | 21.68 | ----- | z | 36.48 | 44.60 | 56.22 | 57.44 | 58.52 | b | 48.12 | b | 40.37 | 29.63 | 18.29 | 39.08 | a | ||||||||
1987 | 17.25 | e | 20.88 | 24.73 | 36.37 | 46.82 | 56.50 | 59.94 | 58.94 | 51.40 | 45.76 | 29.32 | 19.23 | a | 38.93 | |||||||||||
1988 | 12.23 | 15.53 | k | 23.26 | h | 35.23 | 43.77 | a | 54.92 | 59.77 | 60.10 | 49.77 | 44.26 | 28.58 | 18.19 | 40.68 | b | |||||||||
1989 | 14.05 | c | 17.78 | c | 32.31 | 40.15 | 46.77 | 52.78 | 61.71 | 57.32 | 52.38 | b | 41.32 | 29.97 | 18.32 | k | 40.59 | a | ||||||||
1990 | 16.67 | j | 23.09 | k | 30.84 | f | 40.67 | 44.65 | a | 56.66 | a | 60.65 | 57.60 | 56.22 | 40.61 | 30.79 | b | 15.81 | b | 44.85 | c | |||||
1991 | 15.78 | b | 23.48 | c | 28.57 | a | 33.88 | a | 46.39 | 55.20 | 59.81 | b | 59.65 | 52.33 | 43.50 | b | 27.53 | 20.60 | 38.89 | |||||||
1992 | 18.37 | e | 24.05 | 32.47 | 42.03 | 50.10 | a | 54.93 | a | 60.23 | c | 59.48 | a | 51.61 | c | 44.90 | a | 22.00 | 17.54 | d | 39.81 | |||||
1993 | 18.84 | 20.35 | b | 27.27 | 32.70 | b | 46.22 | a | 52.37 | d | 56.08 | a | 55.17 | a | 48.24 | c | 37.23 | 21.24 | c | 17.03 | 36.06 | |||||
1994 | 16.21 | 16.93 | 27.94 | d | 33.15 | d | 45.91 | b | 56.10 | 59.89 | 60.90 | b | 50.93 | 39.68 | i | 23.43 | h | 17.85 | d | 38.58 | b | |||||
1995 | 19.57 | p | 25.33 | a | 26.66 | l | 33.91 | m | 38.90 | j | 49.30 | 52.94 | f | 58.32 | 48.38 | d | 37.32 | a | 28.98 | 23.23 | 38.70 | e | ||||
1996 | 18.05 | b | 24.79 | 24.06 | f | 35.85 | 48.28 | f | 52.93 | b | 57.13 | 59.73 | 50.83 | a | 40.11 | 30.48 | 19.32 | 38.92 | b | |||||||
1997 | 18.28 | a | 20.77 | 27.18 | 30.96 | b | 46.74 | d | 55.95 | b | 59.87 | a | 57.73 | 54.35 | 40.62 | b | 29.23 | 20.74 | d | 38.53 | ||||||
1998 | 21.57 | b | 23.73 | 24.89 | 32.32 | 44.79 | b | 48.12 | 59.73 | 58.35 | 54.68 | 40.37 | 28.90 | 12.16 | c | 37.47 | ||||||||||
1999 | 22.10 | f | 21.02 | 30.87 | 32.33 | 41.53 | 51.10 | d | 58.48 | 55.33 | e | 46.04 | c | 39.29 | 33.27 | 15.79 | 38.64 | a | ||||||||
2000 | 19.95 | b | 21.81 | c | 26.13 | 34.43 | g | 45.65 | a | 53.57 | a | 59.19 | d | 57.26 | d | 50.83 | c | 47.64 | c | 25.77 | b | 25.02 | b | 39.35 | a | |
2001 | 21.55 | 25.57 | 30.68 | 38.59 | b | 47.30 | d | 56.25 | b | 63.16 | 56.87 | 47.14 | a | 36.47 | b | 28.12 | 14.65 | d | 38.86 | |||||||
2002 | 13.85 | 11.17 | b | 19.67 | b | 34.18 | 43.80 | a | 55.87 | g | 66.80 | a | 59.35 | g | 54.52 | e | 42.32 | c | 27.81 | d | 21.27 | 33.54 | b | |||
2003 | 24.15 | 17.36 | c | 28.44 | 34.33 | 44.29 | b | 52.82 | e | 64.45 | 61.72 | a | 50.34 | b | 44.67 | a | ----- | z | ----- | z | 42.26 | b | ||||
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.07 | x | 48.94 | l | 42.27 | t | 27.60 | o | 18.17 | p | ----- | z |
2005 | 25.92 | y | 21.94 | c | 26.25 | c | 36.80 | 45.86 | b | 51.43 | 62.42 | 58.02 | 52.20 | c | 43.35 | 30.16 | a | 17.95 | 40.58 | a | ||||||
2006 | 18.48 | 18.25 | 27.22 | b | 40.47 | 49.18 | 56.87 | 63.19 | ----- | z | 51.91 | n | 35.17 | s | 31.82 | e | 20.87 | d | 36.26 | c | ||||||
2007 | 15.83 | b | 24.02 | b | 32.76 | b | 41.00 | d | 47.52 | b | 56.39 | b | 64.37 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.27 | e | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 18.12 | 20.54 | 27.11 | 36.03 | 45.73 | 53.67 | 60.72 | 58.53 | 51.46 | 41.41 | 28.68 | 19.70 | 38.38 | |||||||||||||
S.D. | 3.49 | 3.53 | 3.78 | 3.26 | 2.28 | 2.28 | 2.21 | 1.95 | 2.75 | 3.16 | 3.15 | 3.32 | 1.35 | |||||||||||||
SKEW | -0.03 | -0.69 | -0.44 | 0.19 | 0.23 | -0.36 | 0.42 | 0.36 | -0.41 | -0.21 | -0.68 | 0.54 | 0.11 | |||||||||||||
MAX | 24.84 | 25.57 | 32.76 | 42.03 | 51.43 | 57.18 | 66.80 | 63.91 | 56.22 | 47.64 | 34.32 | 29.97 | 41.36 | |||||||||||||
MIN | 10.92 | 11.17 | 19.67 | 29.63 | 40.66 | 48.12 | 56.08 | 55.10 | 45.42 | 35.30 | 21.24 | 12.16 | 36.06 | |||||||||||||
YRS | 33 | 35 | 32 | 33 | 34 | 39 | 36 | 35 | 36 | 33 | 33 | 34 | 18 |