YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1980 | ----- | z | ----- | z | ----- | z | ----- | z | 33.39 | 38.83 | 44.35 | 41.74 | 34.40 | 22.10 | 12.27 | 12.27 | a | 29.92 | d | |||||||
1981 | 5.52 | 7.25 | 16.71 | 26.93 | 31.65 | 42.37 | 47.16 | 43.26 | 36.77 | 25.40 | a | 18.57 | 3.35 | 25.41 | ||||||||||||
1982 | 4.42 | 7.04 | 22.50 | a | 21.23 | 31.06 | 37.90 | a | 45.00 | 46.61 | 38.57 | 21.94 | 15.93 | 5.93 | a | 24.84 | ||||||||||
1983 | 0.23 | 10.41 | a | 21.57 | a | 22.23 | 29.42 | 37.34 | a | 44.42 | 45.35 | 37.41 | a | 23.45 | 11.40 | 5.17 | b | 24.03 | ||||||||
1984 | -10.45 | -3.03 | 12.26 | 22.23 | 34.03 | 38.90 | 46.23 | 45.13 | 37.63 | 26.50 | a | 14.31 | a | 7.84 | 22.63 | |||||||||||
1985 | -0.31 | b | 7.80 | c | 21.68 | c | 23.70 | 33.77 | 38.50 | 43.29 | 41.84 | 32.70 | 25.29 | 17.10 | a | 5.40 | a | 24.23 | ||||||||
1986 | 5.94 | 13.79 | 18.39 | 27.60 | 31.39 | 40.70 | 44.17 | a | 41.77 | ----- | z | 23.58 | 16.04 | b | 3.58 | 24.27 | a | |||||||||
1987 | 0.32 | 12.04 | 15.87 | 21.70 | 27.07 | a | 38.97 | 39.35 | 42.53 | a | 30.86 | a | 23.97 | a | 12.07 | 2.87 | 22.30 | |||||||||
1988 | -7.10 | a | 2.14 | a | 15.58 | 23.85 | d | 30.00 | b | 41.03 | 43.76 | n | 42.71 | g | 34.30 | 29.10 | 14.55 | a | 5.21 | b | 18.87 | b | ||||
1989 | -1.36 | f | 8.63 | a | 22.84 | 27.33 | 34.73 | a | 42.11 | b | 47.48 | 44.16 | 37.17 | 26.39 | 15.90 | 3.34 | b | 28.19 | a | |||||||
1990 | 1.62 | b | 9.32 | 23.76 | b | 28.50 | 31.90 | 41.43 | 46.19 | 42.03 | 39.31 | a | 26.74 | 17.76 | a | 1.45 | 25.84 | |||||||||
1991 | -2.45 | b | 10.50 | 19.48 | 24.28 | a | 31.80 | a | 39.70 | 45.19 | 45.13 | 36.03 | 26.03 | 10.66 | a | -4.20 | a | 23.51 | ||||||||
1992 | -10.60 | a | 2.93 | a | 16.32 | c | 28.14 | b | 35.67 | a | 40.07 | 44.17 | a | 42.96 | c | 34.59 | c | 26.90 | 8.77 | -0.53 | a | 22.45 | ||||
1993 | 9.40 | a | 11.29 | d | 17.43 | c | 23.43 | b | 33.17 | b | 38.48 | a | 43.74 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.28 | e | |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | 20.11 | d | 24.07 | c | 29.27 | a | 39.71 | b | 43.93 | c | 46.10 | a | 38.50 | b | 22.94 | 16.63 | c | 8.35 | e | 28.96 | b | |
1996 | 1.26 | l | 14.52 | f | 16.84 | 22.12 | e | 36.75 | c | 43.45 | a | 48.03 | 45.17 | a | 36.30 | c | 27.07 | a | 21.96 | c | 12.56 | d | 31.02 | b | ||
1997 | 5.82 | c | 12.74 | a | 20.83 | b | 26.96 | b | 36.00 | a | 41.48 | g | 45.32 | 46.87 | 42.50 | 26.26 | 17.25 | b | 2.06 | 25.69 | a | |||||
1998 | 7.32 | 11.18 | 20.81 | 24.93 | a | 33.52 | 39.83 | 47.84 | 45.27 | a | 38.70 | 27.90 | b | 19.18 | b | 8.97 | 27.12 | |||||||||
1999 | 11.06 | 13.43 | 21.52 | 22.48 | a | 29.53 | a | 38.13 | 47.48 | 45.73 | a | 32.27 | 24.48 | j | 14.27 | 4.27 | a | 25.47 | a | |||||||
2000 | 12.10 | b | 12.30 | i | 17.70 | h | 23.55 | h | 35.04 | e | 42.89 | b | 45.97 | a | 45.90 | a | 37.20 | 27.80 | a | 10.31 | a | 7.84 | 29.45 | c | ||
2001 | 1.44 | f | 13.00 | a | 25.21 | c | 31.87 | 39.13 | 44.50 | 51.13 | 45.82 | i | 38.66 | a | 28.21 | b | 23.14 | a | 12.17 | a | 30.70 | b | ||||
2002 | 8.57 | a | 9.65 | b | 19.87 | a | 32.72 | a | 37.13 | 47.83 | 50.62 | j | 47.48 | 42.34 | a | 31.87 | a | 21.72 | a | 14.47 | a | 28.51 | a | |||
2003 | 16.71 | 19.56 | a | 24.83 | a | 30.20 | 36.55 | b | 42.17 | a | 51.23 | a | 49.42 | 38.80 | 33.77 | i | 22.25 | b | 12.55 | 31.30 | a | |||||
2004 | 10.87 | a | 7.17 | 26.17 | b | 30.55 | a | 36.43 | a | 42.93 | a | 46.94 | 45.48 | 37.93 | a | 31.61 | 21.14 | b | 11.67 | a | 29.08 | |||||
2005 | 15.07 | a | 20.69 | b | 23.35 | 29.29 | b | 37.35 | 43.72 | a | 48.71 | 47.03 | a | 41.21 | b | 33.04 | c | 22.18 | b | 10.35 | e | 31.00 | ||||
2006 | ----- | z | ----- | z | 23.77 | a | 28.30 | 35.65 | 41.77 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 32.37 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 4.20 | 9.88 | 20.32 | 26.03 | 33.52 | 40.93 | 45.97 | 44.86 | 37.14 | 26.55 | 16.47 | 6.54 | 25.20 | |||||||||||||
S.D. | 7.80 | 5.33 | 3.55 | 3.44 | 3.04 | 2.48 | 2.61 | 2.10 | 2.99 | 3.02 | 4.23 | 4.74 | 2.71 | |||||||||||||
SKEW | -0.43 | -0.23 | -0.35 | 0.31 | -0.22 | 0.78 | -0.06 | 0.03 | -0.21 | 0.48 | -0.05 | -0.19 | 0.91 | |||||||||||||
MAX | 16.71 | 20.69 | 26.17 | 32.72 | 39.13 | 47.83 | 51.23 | 49.42 | 42.50 | 33.04 | 23.14 | 14.47 | 31.00 | |||||||||||||
MIN | -10.60 | -3.03 | 12.26 | 21.23 | 27.07 | 37.34 | 39.35 | 41.74 | 30.86 | 21.94 | 8.77 | -4.20 | 22.30 | |||||||||||||
YRS | 20 | 21 | 24 | 24 | 26 | 25 | 23 | 22 | 23 | 22 | 24 | 24 | 12 |