YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 21.46 | d | 21.48 | a | 35.57 | a | 39.91 | c | 48.37 | d | 57.76 | a | 58.84 | c | 59.93 | b | 52.06 | d | 40.70 | d | 26.00 | b | 20.77 | 40.24 | ||
1995 | 20.05 | b | 31.54 | c | 32.89 | c | 36.06 | f | 43.44 | g | 51.28 | c | 57.43 | c | 60.83 | a | 51.54 | d | 42.41 | d | 35.19 | a | 25.87 | a | 40.90 | b |
1996 | 21.47 | b | 29.24 | b | 31.75 | c | 39.43 | g | 50.60 | f | 55.98 | b | 61.28 | b | 58.74 | b | 49.02 | c | 41.81 | g | 28.22 | c | 21.83 | a | 39.73 | c |
1997 | 18.85 | d | 21.90 | b | 34.13 | d | 35.25 | f | 46.91 | b | 53.85 | c | 57.78 | a | 57.60 | a | 54.38 | b | 41.25 | a | 29.77 | b | 17.10 | a | 39.41 | a |
1998 | 21.12 | a | 20.78 | c | 29.30 | d | 35.31 | c | 47.29 | e | 52.93 | c | 61.98 | b | 58.07 | c | 54.18 | b | 41.94 | f | 32.28 | a | 24.16 | b | 39.76 | a |
1999 | 26.83 | d | 29.55 | f | 36.95 | b | 34.91 | g | 44.61 | d | 53.68 | b | 61.05 | b | 58.34 | b | 50.46 | d | 43.83 | e | 36.02 | c | 22.25 | a | 43.40 | b |
2000 | 28.44 | g | 29.76 | d | 31.88 | e | 42.46 | g | 51.48 | f | 56.33 | c | 60.85 | 60.77 | a | 54.93 | h | 42.77 | e | 24.69 | c | 24.83 | b | 41.49 | d | |
2001 | 18.64 | c | 23.65 | a | 31.38 | b | 40.57 | c | 49.86 | c | 56.37 | d | 60.86 | b | 59.52 | c | 52.76 | a | 44.48 | d | 33.21 | a | 17.66 | b | 40.75 | |
2002 | 21.20 | c | 23.42 | c | 31.93 | d | 44.08 | 47.84 | 59.08 | 63.15 | 59.00 | 52.75 | 41.71 | 31.93 | 19.40 | 41.29 | ||||||||||
2003 | 28.50 | a | 24.66 | 33.32 | 40.00 | a | 50.09 | c | 54.26 | a | 63.69 | 60.95 | a | 52.05 | a | 48.37 | 29.20 | 22.16 | 42.27 | |||||||
2004 | 17.62 | a | 20.71 | 37.68 | 40.48 | 48.03 | 54.27 | 59.13 | 56.71 | 50.67 | 42.55 | a | 31.53 | 22.45 | 40.15 | |||||||||||
2005 | 21.77 | 24.77 | 30.53 | 39.05 | a | 48.35 | 53.21 | a | 61.38 | a | 57.56 | 53.03 | 45.00 | 34.13 | 24.13 | 41.08 | ||||||||||
2006 | 24.17 | a | 26.09 | 30.08 | a | 42.69 | a | 49.24 | b | 56.92 | 61.97 | 59.52 | ----- | z | ----- | z | ----- | z | ----- | z | 43.83 | d | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 21.81 | 24.83 | 32.88 | 40.26 | 48.06 | 55.07 | 60.72 | 59.04 | 52.08 | 43.31 | 31.01 | 21.88 | 40.96 | |||||||||||||
S.D. | 3.25 | 3.66 | 2.58 | 2.59 | 1.59 | 2.20 | 1.92 | 1.36 | 1.61 | 2.25 | 3.54 | 2.75 | 0.78 | |||||||||||||
SKEW | 0.84 | 0.59 | 0.57 | -0.47 | -0.79 | 0.15 | -0.33 | -0.05 | -0.33 | 1.08 | -0.36 | -0.41 | 0.62 | |||||||||||||
MAX | 28.50 | 31.54 | 37.68 | 44.08 | 50.09 | 59.08 | 63.69 | 60.95 | 54.38 | 48.37 | 36.02 | 25.87 | 42.27 | |||||||||||||
MIN | 17.62 | 20.71 | 29.30 | 35.31 | 44.61 | 51.28 | 57.43 | 56.71 | 49.02 | 40.70 | 24.69 | 17.10 | 40.15 | |||||||||||||
YRS | 12 | 12 | 13 | 8 | 10 | 13 | 13 | 13 | 11 | 10 | 12 | 12 | 6 |