YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1969 | ----- | z | 27.16 | l | 35.42 | 44.52 | 52.58 | 58.38 | 61.55 | 61.31 | 55.59 | a | 40.69 | 33.92 | 30.00 | 47.40 | b | |||||||||
1970 | 28.61 | 36.05 | 36.39 | 38.12 | 50.23 | 60.93 | 65.60 | 64.05 | 49.72 | 42.85 | a | 35.78 | 22.18 | 44.21 | ||||||||||||
1971 | 30.06 | 32.95 | 33.19 | 42.27 | 52.10 | 55.58 | 62.44 | 67.29 | 49.47 | 41.63 | 34.37 | 25.95 | a | 43.94 | ||||||||||||
1972 | 24.95 | a | 30.34 | 40.39 | 39.80 | 51.95 | 58.25 | 62.31 | 63.87 | 50.33 | a | 44.98 | a | 35.37 | 21.47 | 43.67 | ||||||||||
1973 | 24.63 | 31.46 | 37.63 | 42.00 | 51.37 | 58.32 | 64.77 | 62.68 | 54.92 | 43.95 | 33.57 | 32.23 | 44.79 | |||||||||||||
1974 | 22.29 | 33.75 | 36.47 | 43.67 | 47.81 | 62.05 | a | 62.89 | 61.52 | a | 55.35 | 45.19 | 37.35 | 28.08 | 44.70 | |||||||||||
1975 | 26.47 | 28.75 | 34.24 | 37.68 | 47.90 | 53.53 | 67.21 | 59.31 | 55.45 | 45.44 | 33.27 | 31.60 | 43.40 | |||||||||||||
1976 | 27.13 | 29.05 | 31.68 | 42.12 | 51.81 | 54.62 | 65.05 | 59.81 | 57.65 | 45.43 | a | 37.88 | 27.94 | 44.18 | ||||||||||||
1977 | 25.27 | 36.36 | 34.95 | a | 47.17 | 48.00 | a | 61.80 | 62.54 | c | 66.02 | d | 54.52 | 45.22 | a | 35.78 | e | 30.95 | 45.71 | |||||||
1978 | 31.53 | a | 35.79 | 43.03 | 44.13 | 48.25 | a | 56.67 | a | 63.13 | 61.25 | a | 55.72 | a | 47.17 | a | 31.92 | e | 21.78 | b | 45.03 | |||||
1979 | 14.50 | 32.23 | 38.89 | 44.58 | 52.23 | a | 58.79 | b | 64.78 | a | 64.70 | a | 58.45 | a | 48.95 | 30.83 | g | 32.48 | 46.42 | a | ||||||
1980 | 25.73 | a | 35.69 | 36.81 | 48.13 | 52.80 | f | 55.60 | 63.83 | a | 57.97 | 56.31 | a | 45.72 | b | 36.06 | e | 31.84 | 44.88 | a | ||||||
1981 | 32.58 | 33.32 | 39.44 | 45.05 | 49.06 | e | 54.74 | a | 60.77 | 65.41 | b | 54.60 | 42.92 | 36.59 | g | 30.32 | 46.20 | a | ||||||||
1982 | 24.92 | 28.61 | i | 36.22 | a | 39.42 | 47.28 | d | 59.44 | d | 61.48 | 63.77 | 54.55 | b | 44.89 | c | 32.02 | h | 28.75 | a | 46.07 | b | ||||
1983 | 31.89 | 36.54 | 41.13 | a | 42.88 | 51.73 | 56.34 | b | 60.90 | 66.23 | 52.41 | a | 46.17 | a | 37.98 | e | 22.21 | b | 45.53 | |||||||
1984 | 25.16 | 31.31 | b | 39.24 | 41.30 | 48.47 | a | 55.76 | a | 63.55 | 65.70 | a | 53.12 | a | 41.45 | 36.28 | e | 21.79 | 43.59 | |||||||
1985 | 19.26 | b | 23.00 | a | 33.63 | 47.58 | 53.07 | a | 58.10 | a | 67.65 | 60.77 | a | 51.29 | a | 44.50 | 24.32 | b | 18.72 | a | 41.82 | |||||
1986 | 30.15 | 34.21 | b | 43.81 | 44.86 | a | 53.48 | 62.90 | 59.89 | 66.15 | a | 52.53 | 46.98 | 36.29 | d | 26.52 | 46.48 | |||||||||
1987 | 24.55 | 33.78 | c | 40.48 | 51.65 | 54.23 | 61.02 | 62.97 | a | 60.98 | 58.62 | b | 47.15 | e | 37.40 | d | 28.79 | 46.80 | ||||||||
1988 | 24.65 | 33.83 | 39.10 | 48.25 | 51.69 | 59.41 | a | 63.73 | a | 63.10 | 56.28 | c | 53.77 | a | 36.57 | a | 25.78 | a | 46.35 | |||||||
1989 | 25.50 | a | 21.41 | 37.53 | 48.10 | 50.88 | a | 59.02 | b | 64.53 | 60.93 | c | 55.91 | b | 45.15 | a | 36.56 | d | 31.13 | 44.72 | ||||||
1990 | 32.26 | 31.11 | 39.65 | h | 48.58 | 49.72 | a | 58.19 | a | 66.55 | 65.61 | 61.54 | b | 45.10 | 37.37 | c | 19.81 | d | 46.89 | a | ||||||
1991 | 23.31 | 38.98 | c | 37.32 | a | 43.67 | i | 48.98 | 54.65 | 64.40 | 67.03 | 57.84 | b | 45.77 | 33.40 | 30.25 | c | 45.63 | a | |||||||
1992 | 30.65 | a | 38.93 | 43.44 | 49.37 | d | 56.29 | b | 61.57 | b | 62.08 | 63.74 | 56.70 | 49.34 | 34.38 | b | 26.45 | c | 47.74 | |||||||
1993 | 20.03 | 25.86 | 40.29 | 44.16 | a | 56.58 | 56.50 | a | 57.10 | 60.66 | 56.02 | 48.10 | a | 29.09 | a | 30.11 | 43.71 | |||||||||
1994 | 32.12 | a | 31.55 | 39.92 | 48.20 | b | 53.79 | 57.72 | a | 66.48 | 66.12 | a | 60.07 | 45.07 | b | 31.14 | a | 24.34 | c | 46.38 | ||||||
1995 | 30.92 | 37.71 | b | 39.02 | 44.26 | a | 51.68 | 56.62 | 64.53 | b | 61.71 | 59.18 | 43.84 | 39.59 | a | 28.43 | a | 46.46 | ||||||||
1996 | 29.87 | d | 29.34 | 39.35 | 44.97 | 47.87 | a | 57.82 | 66.92 | a | 63.65 | 52.77 | 46.15 | 35.30 | 27.45 | c | 45.12 | |||||||||
1997 | 26.35 | d | 31.46 | 38.52 | 42.41 | b | 54.97 | 58.17 | 63.28 | d | 65.56 | 57.05 | a | 45.79 | b | 38.23 | b | 26.83 | d | 45.72 | ||||||
1998 | 32.48 | b | 36.54 | 39.17 | a | 46.63 | 53.11 | c | 57.79 | a | 70.87 | 67.15 | 62.92 | 46.16 | 35.71 | b | 26.92 | f | 49.87 | a | ||||||
1999 | 32.48 | b | 29.76 | c | 37.83 | b | 42.02 | 49.89 | 56.63 | 63.63 | 68.13 | 54.32 | 48.16 | b | 42.68 | 29.21 | b | 46.23 | ||||||||
2000 | 29.24 | d | 35.81 | c | ----- | z | 48.27 | d | 51.16 | 57.31 | a | 65.93 | a | 65.63 | 54.00 | a | 46.94 | 28.40 | a | 26.05 | a | 46.25 | a | |||
2001 | 24.34 | f | 27.62 | b | 39.17 | a | 42.71 | b | 55.45 | a | 57.83 | 68.69 | b | 69.55 | 63.10 | a | 46.94 | d | 37.36 | a | 25.86 | c | 48.57 | a | ||
2002 | 27.09 | c | 25.80 | a | 32.07 | b | 43.71 | b | 52.02 | b | 58.33 | a | 71.34 | 61.90 | 56.97 | 38.32 | a | 36.02 | 31.43 | b | 44.58 | |||||
2003 | 35.97 | 32.81 | a | 40.97 | a | 44.19 | a | 53.34 | b | 64.08 | 70.95 | 67.39 | 60.67 | a | 50.45 | b | 27.50 | b | 31.02 | d | 48.28 | |||||
2004 | 22.11 | c | 32.50 | b | 44.08 | a | 46.67 | ----- | z | 60.60 | 65.37 | 67.65 | 59.45 | 47.97 | ----- | z | ----- | z | 49.60 | c | ||||||
2005 | 31.10 | 32.36 | 40.84 | 45.80 | ----- | z | ----- | z | 66.69 | ----- | z | ----- | z | ----- | z | ----- | z | 18.89 | c | 39.28 | f | |||||
2006 | ----- | z | ----- | z | ----- | z | 41.53 | a | 55.19 | ----- | z | 69.55 | 63.48 | a | 56.21 | b | 46.50 | b | 35.21 | b | ----- | z | 52.53 | e | ||
2007 | ----- | z | ----- | z | ----- | z | ----- | z | 50.02 | b | ----- | z | 74.24 | 65.63 | 53.20 | ----- | z | 32.95 | 27.27 | 50.55 | f | |||||
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | 23.19 | d | 28.66 | 30.79 | 39.56 | c | ----- | z | 59.58 | 65.16 | 68.98 | a | 55.23 | 43.12 | a | 28.53 | ----- | z | 44.28 | b | ||||||
2010 | 28.70 | a | 32.48 | a | 37.89 | 41.34 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.10 | h | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 27.23 | 32.14 | 38.12 | 44.30 | 51.50 | 58.23 | 64.88 | 64.16 | 55.90 | 45.63 | 34.67 | 27.05 | 45.17 | |||||||||||||
S.D. | 4.49 | 4.09 | 3.31 | 3.28 | 2.56 | 2.45 | 3.41 | 2.86 | 3.30 | 2.78 | 3.71 | 3.98 | 1.48 | |||||||||||||
SKEW | -0.52 | -0.60 | -0.34 | 0.01 | 0.13 | 0.35 | 0.55 | -0.17 | 0.20 | 0.10 | -0.79 | -0.60 | 0.05 | |||||||||||||
MAX | 35.97 | 38.98 | 44.08 | 51.65 | 56.58 | 64.08 | 74.24 | 69.55 | 63.10 | 53.77 | 42.68 | 32.48 | 48.28 | |||||||||||||
MIN | 14.50 | 21.41 | 30.79 | 37.68 | 47.28 | 53.53 | 57.10 | 57.97 | 49.47 | 38.32 | 24.32 | 18.72 | 41.82 | |||||||||||||
YRS | 37 | 37 | 37 | 39 | 36 | 37 | 40 | 39 | 39 | 38 | 35 | 36 | 25 |