YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1986 | 22.77 | 30.61 | 41.35 | e | 43.19 | c | 51.63 | 66.30 | b | 67.89 | c | 68.54 | d | 56.05 | b | 44.89 | d | 32.96 | g | 26.72 | d | 47.27 | a | |||
1987 | 20.84 | i | 29.17 | b | ----- | z | 47.30 | h | 54.87 | d | 66.00 | g | 69.17 | d | 65.83 | d | 60.05 | i | 49.92 | f | 34.41 | g | 22.40 | f | 54.76 | h |
1988 | 14.27 | e | 23.50 | g | 33.06 | e | 45.20 | e | 54.16 | 67.10 | i | 72.37 | d | 69.96 | g | 56.91 | a | 53.73 | 32.89 | b | 20.54 | h | 45.32 | d | ||
1989 | 14.50 | i | 15.20 | c | 37.28 | a | 47.50 | 55.25 | a | 62.36 | e | 73.00 | g | 67.06 | m | 60.95 | h | 47.71 | e | 36.10 | t | 20.75 | m | 44.22 | f | |
1990 | 26.33 | h | 23.68 | q | 39.00 | p | 50.00 | c | 53.44 | d | 67.69 | l | 70.62 | a | 68.70 | a | 63.34 | e | 45.04 | e | 34.23 | 14.28 | b | 49.96 | d | |
1991 | 13.80 | a | 26.29 | b | 34.83 | b | 41.63 | 53.86 | c | 63.11 | b | 69.43 | a | 68.82 | a | 58.66 | b | 47.79 | 29.74 | e | 19.97 | a | 43.99 | |||
1992 | 15.48 | e | 29.27 | c | 39.86 | c | 47.75 | x | 58.03 | o | 63.12 | e | 65.34 | i | 68.16 | c | 59.45 | 50.54 | d | 28.33 | g | 18.60 | b | 43.06 | d | |
1993 | 18.88 | a | 19.96 | b | 34.72 | a | 41.71 | d | 54.63 | e | 61.22 | c | ----- | z | 65.61 | h | 57.62 | j | 45.72 | d | 28.65 | f | 23.55 | c | 37.55 | d |
1994 | 25.83 | g | 23.64 | j | 39.85 | h | 46.48 | i | 57.02 | a | 67.81 | f | 72.50 | e | 71.06 | e | 62.93 | o | ----- | z | 21.00 | x | ----- | z | 66.86 | i |
1995 | 24.50 | t | 42.44 | s | 39.76 | h | 43.17 | g | 49.32 | c | 59.43 | g | 67.96 | h | 71.77 | c | 61.75 | h | 44.60 | p | 40.37 | g | 33.45 | l | 60.54 | j |
1996 | 23.34 | l | 29.15 | e | 39.33 | g | 44.95 | h | 56.31 | g | 66.74 | i | 73.85 | g | 71.39 | d | 57.55 | h | 45.04 | f | 34.55 | h | 25.34 | i | 50.27 | j |
1997 | 20.74 | d | 23.06 | b | 36.38 | e | 37.81 | d | 55.57 | d | 64.39 | b | 68.64 | c | 66.98 | c | 59.80 | c | 44.86 | f | 32.71 | d | 19.66 | f | 46.61 | b |
1998 | 26.45 | k | 28.84 | f | 34.40 | g | 42.08 | d | 53.98 | f | 58.22 | c | 71.88 | a | 68.94 | f | 63.40 | f | 46.78 | h | 36.41 | g | 19.90 | f | 57.39 | i |
1999 | 27.98 | h | 29.14 | j | 41.04 | f | 40.74 | g | 49.73 | g | 62.19 | d | 70.09 | d | 66.75 | c | 56.58 | d | 49.10 | j | 40.65 | j | 23.84 | i | 63.90 | h |
2000 | 28.66 | i | 31.41 | f | 35.74 | d | 47.52 | f | 57.00 | c | 64.53 | 72.00 | e | 71.69 | b | ----- | z | 47.86 | b | 24.58 | f | 24.44 | e | 53.32 | e | |
2001 | 20.92 | g | 26.69 | j | 38.27 | e | 44.50 | e | 55.22 | f | 66.45 | a | 72.27 | a | 69.28 | f | 63.00 | e | 48.11 | i | 38.39 | h | 19.15 | d | 50.61 | f |
2002 | 18.76 | d | 19.57 | h | 30.90 | g | 46.48 | f | 55.63 | d | 68.38 | b | 74.55 | c | 68.67 | e | 59.68 | h | 45.62 | f | 31.89 | g | 22.41 | i | 57.20 | g |
2003 | 25.33 | j | 28.00 | h | 37.50 | d | 46.59 | b | 56.28 | f | 64.47 | a | 78.58 | 74.44 | e | 60.12 | f | 54.74 | f | 29.87 | k | 24.80 | f | 60.32 | g | |
2004 | 21.06 | f | 25.55 | g | 43.57 | c | 47.46 | f | 57.36 | f | 66.12 | d | 72.10 | a | 69.00 | f | 61.25 | d | 48.93 | d | 34.22 | e | 27.11 | i | 54.36 | f |
2005 | 29.16 | 28.89 | a | 37.16 | b | 46.60 | a | 55.95 | 61.27 | 74.77 | 69.95 | a | 62.03 | a | 50.41 | c | 37.86 | b | 24.87 | a | 48.24 | |||||
2006 | 29.35 | a | 28.40 | c | 35.63 | a | 49.02 | a | 58.33 | a | 69.33 | 75.40 | 69.18 | 56.57 | 45.52 | a | 35.30 | c | 23.36 | b | 47.95 | |||||
2007 | 13.82 | 30.61 | 40.90 | b | 47.76 | a | 56.74 | 68.34 | a | 76.19 | 72.97 | b | 61.98 | 47.78 | a | 38.66 | a | 16.36 | c | 47.68 | ||||||
2008 | 13.47 | a | 23.70 | a | 31.87 | 39.60 | j | 52.07 | b | 63.72 | 73.31 | 70.70 | a | 58.70 | 48.47 | b | 37.70 | 20.81 | b | 44.95 | a | |||||
2009 | 23.03 | a | 30.57 | a | 37.50 | a | 43.50 | b | 56.35 | 62.17 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.19 | f | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 19.46 | 26.53 | 37.23 | 44.79 | 54.81 | 64.21 | 72.32 | 69.74 | 59.56 | 48.03 | 34.81 | 21.10 | 46.97 | |||||||||||||
S.D. | 5.73 | 4.76 | 3.08 | 3.37 | 2.26 | 2.89 | 2.82 | 2.30 | 2.58 | 2.52 | 2.90 | 3.85 | 1.99 | |||||||||||||
SKEW | 0.60 | -1.23 | 0.31 | -0.32 | -0.80 | 0.04 | 0.41 | 0.23 | 0.06 | 0.70 | -0.21 | -0.28 | -1.11 | |||||||||||||
MAX | 29.35 | 30.61 | 43.57 | 50.00 | 58.33 | 69.33 | 78.58 | 74.44 | 63.34 | 53.73 | 38.66 | 26.72 | 48.24 | |||||||||||||
MIN | 13.47 | 15.20 | 31.87 | 37.81 | 49.32 | 58.22 | 67.89 | 65.83 | 56.05 | 44.89 | 29.74 | 14.28 | 43.99 | |||||||||||||
YRS | 12 | 13 | 16 | 14 | 17 | 18 | 18 | 17 | 13 | 13 | 9 | 11 | 4 |