YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1980 | ----- | z | 37.44 | b | 38.74 | 49.92 | 54.53 | 60.90 | 70.71 | b | 66.27 | 59.40 | a | 49.42 | a | 38.08 | 33.66 | 50.82 | a | |||||||
1981 | 32.52 | 34.66 | 41.65 | 48.45 | a | 53.70 | c | 62.88 | 69.87 | 72.15 | 61.60 | 46.16 | 41.63 | 33.84 | 49.92 | |||||||||||
1982 | 24.84 | b | 28.98 | c | 39.71 | b | 43.17 | 53.43 | a | 63.33 | 68.34 | 70.62 | b | 58.97 | 47.28 | a | 34.55 | a | 30.78 | d | 47.00 | |||||
1983 | 33.69 | b | 36.98 | 41.70 | c | 44.04 | c | 53.66 | 61.91 | a | 66.90 | 71.87 | a | 59.52 | 49.97 | 41.00 | 25.71 | c | 48.91 | |||||||
1984 | 24.03 | 26.93 | a | 39.29 | 45.37 | 53.81 | 60.05 | 71.69 | b | 70.90 | 57.97 | 46.24 | b | 37.10 | 23.15 | 46.38 | ||||||||||
1985 | 19.37 | a | 22.20 | a | 32.37 | 50.80 | 57.65 | 65.15 | 75.06 | 65.81 | 53.80 | 45.90 | 26.63 | 14.22 | b | 44.08 | ||||||||||
1986 | 27.79 | 37.89 | a | 45.34 | 46.40 | 54.82 | a | 70.63 | 68.35 | 71.76 | 54.97 | 48.98 | 38.62 | 28.35 | 49.49 | |||||||||||
1987 | 24.79 | 36.07 | a | 41.84 | ----- | z | 60.79 | 67.70 | 68.79 | 67.68 | 61.15 | 52.50 | 39.24 | a | 29.44 | 50.00 | a | |||||||||
1988 | 27.27 | a | 36.78 | 40.73 | a | ----- | z | 55.79 | 69.92 | 74.57 | a | 70.02 | 58.43 | 56.97 | 38.95 | a | 26.24 | 50.51 | a | |||||||
1989 | 24.40 | a | 25.13 | a | 41.87 | 51.38 | 55.74 | 65.37 | 74.21 | 67.90 | 60.43 | 49.02 | 39.35 | 30.87 | 48.81 | |||||||||||
1990 | 31.16 | 31.64 | 43.68 | 53.58 | 54.71 | 64.37 | 73.68 | 69.50 | 66.72 | a | 49.61 | 39.90 | 17.33 | a | 49.66 | |||||||||||
1991 | 25.17 | a | 39.95 | 40.87 | a | 46.47 | 53.57 | c | 62.17 | 73.74 | 72.47 | a | 62.32 | 50.93 | a | 35.54 | b | 30.95 | b | 49.51 | ||||||
1992 | 31.00 | a | 41.09 | 47.24 | 52.70 | 62.98 | a | 66.85 | 69.60 | a | 71.48 | a | 60.52 | d | 53.55 | a | 33.66 | b | 26.77 | c | 51.45 | |||||
1993 | 21.24 | b | 25.22 | c | 39.55 | b | 47.56 | c | 60.71 | 60.50 | 63.87 | a | 66.31 | 59.57 | 51.02 | b | 32.11 | b | 31.00 | 46.55 | ||||||
1994 | 34.65 | 30.82 | 44.18 | 49.38 | f | 59.89 | 66.23 | 73.48 | a | 72.48 | a | 63.47 | a | 48.71 | 31.69 | a | 27.83 | b | 50.31 | a | ||||||
1995 | 33.34 | 39.54 | 40.75 | c | 47.02 | 54.40 | 61.45 | a | 70.48 | a | 69.08 | 62.03 | 48.60 | a | 43.00 | 33.13 | 50.23 | |||||||||
1996 | 30.55 | b | 33.17 | c | 42.24 | 47.65 | g | 54.25 | a | 65.24 | a | 73.64 | b | 69.87 | 59.15 | c | 49.29 | b | 40.32 | b | 33.17 | b | 50.08 | a | ||
1997 | 32.28 | f | 33.85 | d | 41.70 | d | 44.71 | d | 59.10 | b | 62.74 | a | 69.72 | b | 70.64 | f | 61.74 | g | 48.70 | c | 36.31 | n | 29.11 | d | 48.71 | d |
1998 | 36.52 | f | 36.76 | g | 40.74 | b | 46.96 | d | 54.98 | c | 60.91 | g | 76.53 | a | 73.98 | a | 66.19 | c | 47.78 | f | 40.94 | f | 30.48 | g | 59.90 | f |
1999 | 34.11 | h | 35.85 | k | 41.89 | i | 44.30 | h | 53.08 | g | 64.56 | d | 71.71 | e | 72.55 | c | 58.90 | i | 51.91 | h | 44.00 | j | 31.12 | b | 59.99 | h |
2000 | 33.11 | i | 39.48 | i | 41.55 | c | 52.69 | d | 60.24 | d | 66.75 | f | 74.05 | a | 72.71 | e | 61.14 | b | 50.39 | h | 31.28 | g | ----- | z | 60.40 | f |
2001 | 22.93 | x | ----- | z | 46.00 | c | 47.26 | c | 59.83 | g | 61.88 | n | 73.70 | d | 75.80 | a | 65.15 | 51.85 | k | 42.77 | 27.86 | b | 54.08 | e | ||
2002 | 28.94 | d | 27.48 | b | 38.23 | 50.25 | 57.79 | 67.23 | 77.88 | a | 69.65 | a | 62.32 | 47.88 | a | 39.31 | c | 35.74 | d | 50.23 | ||||||
2003 | 39.36 | m | 33.90 | g | 45.30 | f | 47.88 | j | 57.20 | h | 68.10 | e | 78.96 | c | 75.19 | e | 63.48 | g | 56.48 | i | 36.91 | a | 37.13 | d | 59.26 | g |
2004 | 28.85 | h | 29.96 | d | 46.69 | d | 52.52 | g | 57.50 | d | 68.15 | c | 74.83 | d | 70.56 | f | 62.10 | e | 52.67 | e | 38.22 | a | 34.68 | a | 51.65 | c |
2005 | 31.90 | b | 33.21 | b | 42.34 | 45.02 | 56.81 | ----- | z | 75.82 | 72.15 | 60.30 | 51.63 | 37.62 | 27.76 | f | 50.68 | b | ||||||||
2006 | 35.16 | 32.14 | 39.24 | 48.60 | 57.68 | 67.65 | 77.35 | 70.55 | ----- | z | ----- | z | ----- | z | 30.18 | k | 53.55 | d | ||||||||
2007 | 27.23 | a | 39.59 | a | 46.96 | c | 51.40 | d | 63.02 | e | 68.80 | b | 79.61 | d | 74.30 | d | 63.21 | d | 49.80 | h | 39.71 | a | 30.33 | b | 53.11 | a |
2008 | 24.95 | a | 33.71 | a | 39.63 | e | 45.20 | e | 58.17 | b | 66.70 | b | 75.63 | e | 73.80 | f | 62.23 | b | 51.06 | e | 43.97 | a | 28.72 | b | 48.18 | a |
2009 | 30.36 | c | 33.77 | b | 40.30 | d | 47.92 | d | 59.84 | c | 64.56 | d | 75.88 | b | 71.16 | f | 67.67 | f | 47.17 | d | 39.56 | c | 25.32 | a | 46.47 | b |
2010 | 33.33 | b | 35.62 | 42.63 | a | 47.66 | b | 51.69 | d | 65.17 | f | 73.69 | b | 71.60 | b | 63.63 | 54.37 | 37.22 | 34.18 | 49.60 | a | |||||
2011 | 30.23 | 32.82 | 42.19 | 45.20 | 54.03 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.89 | g | |||||
2012 | ----- | z | ----- | z | ----- | z | 67.10 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 28.66 | 33.21 | 41.67 | 47.99 | 56.73 | 65.12 | 72.98 | 70.91 | 61.01 | 49.90 | 37.95 | 29.28 | 48.63 | |||||||||||||
S.D. | 4.35 | 4.93 | 3.02 | 2.92 | 3.07 | 2.98 | 3.66 | 2.61 | 2.98 | 2.74 | 3.84 | 5.18 | 2.05 | |||||||||||||
SKEW | -0.35 | -0.43 | -0.41 | 0.34 | 0.49 | -0.01 | -0.38 | -0.26 | -0.34 | 0.69 | -1.04 | -1.17 | -0.85 | |||||||||||||
MAX | 35.16 | 41.09 | 47.24 | 53.58 | 63.02 | 70.63 | 79.61 | 75.80 | 66.72 | 56.97 | 43.97 | 37.13 | 51.45 | |||||||||||||
MIN | 19.37 | 22.20 | 32.37 | 43.17 | 51.69 | 60.05 | 63.87 | 65.81 | 53.80 | 45.90 | 26.63 | 14.22 | 44.08 | |||||||||||||
YRS | 24 | 27 | 30 | 25 | 29 | 26 | 31 | 27 | 26 | 24 | 26 | 27 | 13 |