YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 91.52 | 82.59 | a | 73.17 | a | 54.66 | a | 31.93 | d | 66.77 | g | |
1979 | 27.50 | a | 36.79 | 52.06 | 67.27 | 75.47 | a | 89.07 | 95.90 | 91.03 | 88.97 | 73.45 | 45.23 | 37.90 | 65.05 | |||||||||||
1980 | 41.71 | 50.79 | 51.84 | 66.00 | 71.97 | 89.60 | 95.10 | a | 91.23 | 83.23 | 67.97 | 55.40 | 51.68 | 68.04 | ||||||||||||
1981 | 50.83 | a | 54.29 | 57.52 | 73.23 | 76.23 | 92.63 | 95.23 | 92.03 | 84.30 | 65.06 | 56.97 | 44.29 | 70.22 | ||||||||||||
1982 | 41.13 | 45.71 | 57.00 | 65.48 | a | 75.26 | 84.61 | g | 94.07 | b | 91.03 | 81.70 | ----- | z | 50.61 | b | 41.68 | 64.37 | b | |||||||
1983 | 42.60 | a | 51.58 | d | 56.78 | v | 63.12 | e | 71.64 | t | 82.26 | c | 92.21 | c | 92.65 | 87.24 | a | 72.93 | d | 54.07 | b | 39.10 | b | 67.78 | b | |
1984 | 33.77 | 43.15 | b | 55.56 | d | 63.20 | e | 81.96 | h | 82.43 | p | 93.54 | c | 90.52 | 84.76 | a | 60.62 | b | 54.67 | c | 40.97 | b | 62.07 | b | ||
1985 | 35.93 | d | 41.44 | a | 52.13 | a | 71.80 | 81.64 | c | 91.72 | a | 95.10 | 93.58 | 78.00 | 67.53 | a | 52.23 | 43.71 | 67.07 | |||||||
1986 | 46.61 | 55.46 | 63.81 | 66.10 | 75.33 | a | 92.48 | a | 97.33 | a | ----- | z | 73.63 | 64.59 | b | 53.85 | c | 40.81 | 66.36 | a | ||||||
1987 | 31.55 | 48.68 | 54.84 | 70.87 | 76.60 | a | 91.00 | e | 91.44 | d | 89.34 | b | 83.45 | a | 71.52 | b | 49.90 | 38.58 | 66.48 | |||||||
1988 | 30.63 | a | 43.34 | 56.48 | 68.40 | 77.03 | 90.90 | 95.84 | 91.94 | 80.97 | 75.32 | 53.70 | 42.10 | a | 67.22 | |||||||||||
1989 | 32.00 | 42.96 | 62.94 | 73.45 | a | 79.00 | b | 87.14 | b | 96.00 | a | 89.29 | 83.37 | 70.27 | a | 56.86 | a | 43.87 | 68.10 | |||||||
1990 | 40.52 | 49.59 | a | 59.76 | b | 71.00 | d | 76.13 | a | 92.24 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.87 | f | |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 48.68 | b | 33.21 | b | 40.94 | j |
1992 | 29.97 | 46.29 | a | 59.77 | a | 73.43 | 77.58 | 86.45 | a | 89.52 | b | 90.76 | b | 82.96 | b | 72.38 | b | 46.64 | b | 34.16 | 65.83 | |||||
1993 | 39.41 | b | 44.29 | 59.90 | b | 64.86 | a | 76.10 | a | 85.32 | b | 92.00 | a | 87.60 | a | 82.17 | 64.30 | a | 48.03 | a | 39.97 | 65.33 | ||||
1994 | 43.16 | 44.64 | c | 62.29 | 67.00 | a | 79.17 | a | 92.17 | a | 96.03 | 93.27 | a | 83.48 | a | 66.00 | 49.23 | 41.03 | 68.12 | |||||||
1995 | 42.00 | 56.54 | 58.13 | 64.13 | 70.13 | a | 82.47 | 91.61 | 93.42 | 83.38 | a | 70.65 | 58.41 | a | 47.48 | 68.20 | ||||||||||
1996 | 44.10 | 52.61 | a | 58.17 | a | 66.69 | a | 81.03 | 89.18 | b | 95.19 | 92.65 | 78.57 | 66.35 | 52.73 | 42.48 | 68.31 | |||||||||
1997 | 42.10 | 44.29 | 60.48 | 59.77 | 77.45 | 86.43 | 91.19 | 87.39 | 77.63 | 66.23 | 50.80 | 38.77 | 65.21 | |||||||||||||
1998 | 45.97 | 46.43 | 55.77 | 61.90 | 76.45 | 83.63 | 96.26 | 94.06 | 85.30 | 66.74 | 53.60 | 40.52 | 67.22 | |||||||||||||
1999 | 46.23 | 52.14 | 64.71 | 60.37 | 73.35 | 85.93 | 91.39 | 87.87 | 79.60 | 74.29 | 59.97 | 43.11 | l | 70.53 | a | |||||||||||
2000 | 45.55 | 52.21 | 55.73 | a | 72.13 | 80.81 | 90.20 | 96.65 | 95.13 | 84.38 | d | 69.10 | b | 45.91 | h | 43.32 | 71.38 | a | ||||||||
2001 | 40.89 | d | 47.43 | 58.16 | 67.37 | 79.93 | b | 90.80 | 94.13 | 91.10 | b | 87.52 | g | 73.38 | b | 59.39 | b | 40.11 | c | 67.52 | a | |||||
2002 | 40.54 | c | 44.96 | a | 55.78 | d | 72.79 | f | 78.15 | e | 93.60 | 98.59 | b | 93.50 | a | 81.21 | a | 68.34 | b | 52.45 | a | 44.03 | 68.29 | a | ||
2003 | 47.00 | e | 47.89 | 58.19 | 67.00 | 79.13 | a | 89.85 | d | 98.23 | 91.58 | e | 81.18 | h | 75.90 | a | 49.63 | 41.81 | 67.84 | a | ||||||
2004 | 33.06 | 44.07 | 66.32 | 66.25 | b | 77.52 | d | 88.80 | 94.93 | c | 91.00 | b | 81.08 | e | 67.52 | d | 49.67 | 40.19 | 66.70 | |||||||
2005 | 47.35 | 49.11 | a | 55.62 | b | 67.84 | e | 78.32 | 83.59 | a | 99.06 | 90.53 | l | 84.50 | h | 70.71 | 56.63 | 40.10 | k | 67.58 | c | |||||
2006 | 46.27 | e | 48.76 | c | 56.67 | j | 71.92 | e | 83.22 | m | 93.43 | 96.12 | f | 91.56 | m | 82.40 | o | 65.39 | 57.75 | j | 40.50 | i | 65.15 | g | ||
2007 | 37.53 | a | 52.64 | 59.25 | g | 68.09 | g | ----- | z | 91.80 | j | 98.39 | c | 94.40 | a | 84.46 | d | 71.34 | b | 60.31 | a | 48.71 | x | 71.30 | e | |
2008 | 36.97 | 44.66 | 57.74 | 64.83 | 75.03 | 89.90 | 98.81 | 95.74 | 86.60 | 73.14 | c | 58.07 | c | 43.54 | e | 68.75 | ||||||||||
2009 | 38.80 | f | 52.70 | e | 63.04 | c | 63.18 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.87 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 40.10 | 47.85 | 58.29 | 67.24 | 76.99 | 88.88 | 94.95 | 91.68 | 82.52 | 69.44 | 53.30 | 41.05 | 67.24 | |||||||||||||
S.D. | 6.14 | 4.61 | 3.81 | 3.93 | 2.73 | 3.43 | 2.64 | 2.20 | 3.30 | 3.87 | 4.11 | 4.12 | 1.43 | |||||||||||||
SKEW | -0.41 | -0.08 | 0.26 | 0.01 | -0.51 | -0.53 | -0.24 | -0.25 | -0.60 | -0.21 | -0.03 | -0.02 | 0.11 | |||||||||||||
MAX | 50.83 | 56.54 | 66.32 | 73.45 | 81.64 | 93.60 | 99.06 | 95.74 | 88.97 | 75.90 | 60.31 | 51.68 | 70.22 | |||||||||||||
MIN | 27.50 | 36.79 | 51.84 | 59.77 | 70.13 | 82.26 | 89.52 | 87.39 | 73.63 | 60.62 | 45.23 | 31.93 | 65.05 | |||||||||||||
YRS | 29 | 30 | 27 | 27 | 25 | 26 | 27 | 26 | 25 | 28 | 28 | 26 | 16 |