YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 26.78 | u | 31.82 | 31.82 | k | |
1957 | 16.10 | e | 28.26 | c | 32.27 | a | 45.80 | 54.48 | 67.48 | 67.18 | 63.92 | 60.79 | a | 47.27 | a | 40.71 | a | 31.61 | 46.32 | |||||||
1958 | 22.82 | 19.67 | g | 33.21 | c | 45.50 | c | 52.98 | a | 59.64 | a | 69.45 | 67.83 | a | 60.22 | 47.52 | b | 41.12 | 20.57 | a | 47.35 | a | ||||
1959 | 22.79 | 23.06 | a | 33.15 | 48.05 | a | 60.02 | a | 65.59 | a | 71.13 | 70.71 | 64.08 | 50.21 | 37.07 | b | 28.95 | 47.90 | ||||||||
1960 | 24.15 | 26.70 | a | 23.34 | 49.87 | 56.60 | 65.17 | 67.85 | a | 67.13 | 60.63 | 50.15 | a | 42.50 | a | 21.95 | 46.34 | |||||||||
1961 | 19.07 | a | 26.96 | 32.16 | 40.92 | 53.03 | 64.84 | b | 69.47 | 66.83 | a | 66.87 | 52.13 | 39.28 | 27.77 | c | 46.61 | |||||||||
1962 | 22.22 | a | 20.93 | 32.24 | 46.43 | b | 59.88 | c | 66.14 | a | 67.84 | 65.94 | 57.75 | 50.82 | a | 35.20 | 25.64 | b | 45.92 | |||||||
1963 | 20.35 | a | 18.54 | c | 33.30 | a | 47.57 | 55.72 | a | 64.97 | 69.44 | 66.17 | e | 57.08 | 56.85 | a | 44.57 | 21.63 | a | 46.35 | ||||||
1964 | 27.03 | 23.62 | 35.35 | a | 44.27 | 60.42 | 63.17 | 70.53 | 68.44 | m | 61.93 | 48.34 | 43.18 | 27.32 | a | 45.92 | a | |||||||||
1965 | 19.47 | 21.95 | 30.00 | 41.83 | 60.25 | a | 63.50 | 67.35 | 66.37 | a | 60.08 | 46.39 | 36.22 | 29.11 | 45.21 | |||||||||||
1966 | 19.63 | 23.82 | 32.47 | 40.29 | b | 51.74 | 66.20 | 72.16 | 68.48 | 57.78 | 47.73 | 39.80 | 27.84 | 45.66 | ||||||||||||
1967 | 27.37 | a | 19.43 | 28.11 | 43.30 | 47.97 | 67.42 | 67.39 | 64.80 | a | 57.68 | 48.84 | 34.34 | b | 28.58 | a | 44.60 | |||||||||
1968 | 15.18 | c | 19.23 | a | 35.77 | 49.90 | 53.45 | b | 63.02 | a | 71.45 | ----- | z | 61.28 | a | 49.58 | k | 36.84 | a | 21.76 | 42.79 | b | ||||
1969 | 20.73 | c | ----- | z | ----- | z | 45.65 | m | ----- | z | 66.21 | w | 65.87 | d | 70.06 | g | 61.72 | a | 49.52 | 36.43 | c | 21.67 | b | 42.66 | f | |
1970 | 16.65 | 25.24 | c | 31.29 | 45.42 | 57.60 | b | 64.43 | a | 76.36 | x | 68.89 | 61.98 | 51.00 | 40.17 | a | ----- | z | 46.27 | b | ||||||
1971 | 18.76 | 20.70 | a | 30.19 | 44.02 | a | 54.50 | v | 65.93 | b | 69.38 | a | 66.75 | a | 63.55 | 57.31 | b | 37.27 | 31.42 | a | 45.93 | a | ||||
1972 | 25.74 | 20.47 | 30.85 | a | 40.80 | 56.90 | a | 61.96 | g | 70.13 | a | 64.90 | ----- | z | ----- | z | 34.83 | c | 30.71 | g | 43.08 | d | ||||
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.40 | 52.35 | 40.75 | 30.78 | b | 46.07 | h | |||
1974 | 25.89 | h | 22.31 | b | ----- | z | ----- | z | 52.65 | g | 63.72 | ----- | z | ----- | z | ----- | z | 45.34 | 41.14 | a | 30.85 | 40.67 | g | |||
1975 | 27.85 | e | 27.22 | a | 30.78 | d | 39.18 | b | 60.07 | a | 64.72 | g | 68.40 | a | 67.74 | d | 57.28 | c | ----- | z | ----- | z | ----- | z | 47.31 | d |
1976 | ----- | z | 28.93 | n | 33.25 | q | 63.21 | w | ----- | z | ----- | z | ----- | z | ----- | z | 57.33 | 41.60 | f | 34.75 | 22.09 | d | 38.06 | i | ||
1977 | 13.69 | d | 25.20 | e | 38.61 | d | 48.12 | 58.26 | n | 62.09 | a | 70.59 | b | 68.39 | 61.07 | 49.04 | g | ----- | z | ----- | z | 48.47 | d | |||
1978 | ----- | z | ----- | z | ----- | z | ----- | z | 55.02 | 64.60 | 68.31 | 69.27 | 59.23 | j | 49.90 | f | 41.67 | f | ----- | z | 64.30 | h | ||||
1979 | 26.38 | o | 16.89 | 37.65 | g | 47.37 | c | 57.50 | 63.67 | a | 65.69 | 66.67 | b | 60.35 | 49.02 | a | 43.92 | 30.73 | a | 50.18 | b | |||||
1980 | 24.87 | ----- | z | 27.92 | s | 48.08 | e | 61.13 | a | 64.69 | f | 72.87 | e | 73.40 | 69.57 | o | 50.73 | k | 34.40 | y | ----- | z | 56.07 | g | ||
1981 | 18.10 | 33.12 | 33.71 | e | 48.89 | g | ----- | z | ----- | z | 67.47 | p | 66.17 | d | 57.61 | l | ----- | z | 35.23 | f | 23.93 | a | 35.01 | g | ||
1982 | 13.50 | c | 22.60 | b | 27.90 | b | 39.72 | 54.77 | g | 61.24 | a | 69.80 | a | 66.10 | g | 61.11 | h | 49.02 | d | 44.38 | i | 31.84 | c | 39.45 | d | |
1983 | 23.11 | 25.54 | e | 34.55 | a | 41.43 | c | 54.44 | e | 64.69 | a | ----- | z | 68.07 | a | 61.17 | a | ----- | z | 39.02 | 24.79 | b | 43.68 | b | ||
1984 | 19.50 | c | 31.36 | 27.58 | f | 43.17 | ----- | z | 66.00 | r | 67.26 | 68.53 | b | 57.56 | c | 52.67 | a | 36.62 | 32.68 | 45.48 | c | |||||
1985 | 16.90 | b | 25.65 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.48 | c | 39.24 | a | ----- | z | 32.82 | h |
1986 | 23.83 | b | 21.59 | 34.35 | 46.25 | b | 59.36 | c | 62.31 | a | ----- | z | 64.97 | 58.25 | 50.02 | a | 35.58 | 29.60 | 44.19 | a | ||||||
1987 | 21.80 | a | 22.92 | b | 35.25 | c | 46.96 | b | 57.74 | f | 64.91 | a | 70.43 | a | 65.46 | c | 60.54 | b | 45.42 | a | 39.00 | c | 30.83 | a | 45.78 | a |
1988 | 21.39 | l | 23.91 | 34.62 | e | 43.66 | a | 55.95 | b | 63.91 | a | 71.06 | d | 70.21 | b | 58.42 | 44.84 | b | 41.35 | f | 27.19 | b | 49.38 | b | ||
1989 | 27.66 | 25.07 | 31.61 | c | 42.84 | a | 55.45 | b | 65.70 | 69.36 | j | 65.78 | a | ----- | z | ----- | z | ----- | z | ----- | z | 44.87 | e | |||
1990 | ----- | z | 29.76 | e | 35.75 | e | 46.58 | f | 54.12 | c | 63.74 | g | 68.97 | l | 67.73 | g | ----- | z | ----- | z | ----- | z | ----- | z | 39.88 | i |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | 38.56 | 48.18 | 60.47 | 63.58 | 69.76 | 70.56 | 63.20 | 50.66 | 40.50 | 34.55 | 54.00 | b | ||||||||||
1999 | 24.47 | 29.91 | 34.44 | 46.78 | 57.74 | 67.83 | 74.40 | 67.90 | 63.37 | 48.89 | 43.38 | 31.17 | b | 49.19 | ||||||||||||
2000 | 23.79 | b | 28.45 | 40.50 | 44.48 | 58.03 | 65.22 | 65.52 | 65.77 | 59.03 | 50.76 | 37.10 | 21.66 | 46.69 | ||||||||||||
2001 | 25.53 | 26.73 | 30.68 | 47.37 | 57.44 | 66.12 | 65.92 | a | 71.31 | 60.35 | 51.90 | 44.65 | 34.90 | 48.57 | ||||||||||||
2002 | 31.73 | 32.50 | 36.87 | 48.30 | 53.24 | 64.98 | 70.85 | 70.60 | 63.72 | 46.58 | 37.10 | 26.60 | 48.59 | |||||||||||||
2003 | 17.95 | 21.00 | 34.42 | 42.87 | 53.92 | 62.13 | 69.26 | 70.32 | 60.70 | 47.52 | 41.43 | b | 28.82 | 45.86 | ||||||||||||
2004 | 14.95 | 25.64 | 35.79 | 46.40 | 61.10 | ----- | z | 67.47 | 67.29 | ----- | z | ----- | z | ----- | z | ----- | z | 45.52 | e | |||||||
2005 | ----- | z | ----- | z | 30.61 | 49.52 | 52.89 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.34 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 21.43 | 24.60 | 33.11 | 45.14 | 56.42 | 64.47 | 69.17 | 67.72 | 60.52 | 49.60 | 39.15 | 27.83 | 46.70 | |||||||||||||
S.D. | 4.54 | 4.02 | 3.38 | 3.06 | 3.25 | 1.87 | 2.17 | 2.22 | 2.39 | 2.97 | 3.07 | 4.15 | 1.36 | |||||||||||||
SKEW | 0.10 | 0.28 | -0.37 | -0.30 | -0.36 | -0.43 | 0.21 | 0.52 | 0.47 | 0.78 | 0.19 | -0.30 | 0.49 | |||||||||||||
MAX | 31.73 | 33.12 | 40.50 | 49.90 | 61.13 | 67.83 | 74.40 | 73.40 | 66.87 | 57.31 | 44.65 | 34.90 | 49.19 | |||||||||||||
MIN | 13.50 | 16.89 | 23.34 | 39.18 | 47.97 | 59.64 | 65.52 | 63.92 | 57.08 | 44.84 | 34.34 | 20.57 | 44.60 | |||||||||||||
YRS | 33 | 34 | 33 | 34 | 31 | 30 | 31 | 32 | 31 | 29 | 31 | 32 | 14 |