YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 80.83 | a | 74.07 | 64.55 | 52.73 | 42.37 | 62.91 | g | ||||
1976 | 44.06 | 49.66 | 51.16 | 58.48 | 68.32 | 77.28 | 80.53 | 78.73 | a | 71.80 | 60.77 | 51.78 | 44.26 | 61.40 | ||||||||||||
1977 | 43.68 | 49.80 | 48.19 | 60.67 | 63.03 | 77.11 | h | 81.39 | 81.63 | a | 75.53 | a | 65.31 | 54.00 | 48.60 | 61.08 | a | |||||||||
1978 | 43.63 | 46.73 | 54.48 | b | 58.52 | 65.97 | 77.83 | 80.71 | b | 78.42 | 73.37 | 67.21 | 51.80 | 40.24 | 61.58 | |||||||||||
1979 | 39.15 | 45.61 | 50.66 | 59.35 | 65.48 | 75.85 | 81.08 | 76.27 | 75.88 | d | 67.12 | a | 48.57 | 45.24 | 60.86 | |||||||||||
1980 | 45.26 | b | 48.88 | 49.94 | 59.02 | ----- | z | 76.57 | 81.73 | 78.77 | 73.97 | 62.77 | 52.20 | 49.31 | 61.67 | a | ||||||||||
1981 | 47.42 | 50.05 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.74 | j | ||
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 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | 45.27 | 48.71 | 50.52 | a | 61.10 | a | 71.10 | 77.52 | 81.27 | 78.00 | 75.32 | 59.29 | 42.78 | g | ----- | z | 64.81 | b | ||||||||
2001 | ----- | z | ----- | z | 57.33 | h | 61.15 | 74.81 | 82.02 | b | 83.31 | e | 81.57 | c | 79.45 | b | 68.86 | f | 57.88 | j | 44.46 | e | 72.39 | e | ||
2002 | 47.40 | g | 50.64 | g | 55.00 | j | 66.25 | f | 72.63 | d | 84.13 | d | 85.19 | d | 83.72 | d | 77.85 | d | 64.17 | e | 55.61 | c | 45.35 | e | 71.08 | d |
2003 | 52.66 | b | 48.33 | e | 53.56 | g | 60.13 | g | 72.00 | e | 81.56 | c | 86.55 | b | 83.64 | b | 77.81 | c | 71.98 | f | 52.86 | e | 45.96 | d | 66.82 | c |
2004 | 46.50 | h | 45.88 | e | 60.74 | d | 60.47 | 73.21 | c | 80.95 | k | 83.13 | a | ----- | z | ----- | z | 56.72 | v | 50.53 | a | 46.03 | a | 60.00 | e | |
2005 | 48.15 | a | 50.34 | 53.92 | 61.75 | 70.95 | a | 78.34 | a | 84.22 | a | 80.78 | b | 76.90 | 66.40 | 55.74 | a | 46.84 | b | 64.53 | ||||||
2006 | 47.74 | 51.54 | a | 53.03 | b | 62.45 | 72.33 | a | 82.12 | 83.98 | 79.79 | 72.64 | a | 63.25 | a | 56.03 | a | 45.19 | 64.18 | |||||||
2007 | 42.98 | b | 49.78 | a | 57.94 | 62.57 | 71.98 | 79.72 | 84.47 | 82.94 | 78.07 | a | 66.98 | 58.63 | 43.80 | a | 64.99 | |||||||||
2008 | 45.10 | 48.77 | a | 54.94 | 60.90 | a | 66.55 | c | 79.50 | a | 81.97 | a | 80.65 | a | 75.27 | b | 65.45 | a | 55.53 | 44.46 | c | 63.26 | ||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 45.42 | 48.77 | 53.23 | 60.53 | 69.87 | 79.37 | 82.82 | 80.41 | 75.57 | 64.44 | 53.54 | 45.15 | 62.97 | |||||||||||||
S.D. | 3.34 | 1.77 | 3.71 | 1.42 | 3.60 | 2.59 | 1.86 | 2.21 | 2.25 | 2.54 | 2.71 | 2.30 | 1.68 | |||||||||||||
SKEW | 0.36 | -0.55 | 0.67 | -0.14 | -0.54 | 0.40 | 0.48 | -0.09 | 0.02 | -0.73 | 0.05 | -0.16 | -0.08 | |||||||||||||
MAX | 52.66 | 51.54 | 60.74 | 62.57 | 74.81 | 84.13 | 86.55 | 83.72 | 79.45 | 67.21 | 58.63 | 49.31 | 64.99 | |||||||||||||
MIN | 39.15 | 45.61 | 48.19 | 58.48 | 63.03 | 75.85 | 80.53 | 76.27 | 71.80 | 59.29 | 48.57 | 40.24 | 60.86 | |||||||||||||
YRS | 12 | 13 | 11 | 12 | 13 | 12 | 14 | 14 | 14 | 12 | 13 | 14 | 7 |