YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1980 | ----- | z | 27.89 | b | 27.42 | 34.97 | 42.16 | 45.70 | 55.27 | a | 50.13 | 44.31 | a | 33.37 | a | 25.93 | 22.90 | 37.28 | a | |||||||
1981 | 23.84 | 22.07 | 28.16 | 35.34 | a | 40.75 | c | 49.17 | 52.35 | 54.19 | 44.10 | 33.48 | 30.80 | 25.10 | 36.61 | |||||||||||
1982 | 16.97 | b | 19.88 | b | 28.93 | b | 29.53 | 39.17 | a | 48.97 | 54.10 | 53.52 | b | 44.73 | 33.84 | 23.37 | 22.61 | c | 34.63 | |||||||
1983 | 25.37 | a | 27.46 | 31.50 | c | 32.00 | c | 39.77 | 47.59 | a | 50.45 | 56.43 | a | 42.87 | 35.58 | 31.43 | 19.10 | a | 36.63 | |||||||
1984 | 17.68 | 18.86 | a | 28.48 | 32.97 | 40.52 | 46.50 | 56.93 | b | 54.39 | 41.87 | 33.00 | b | 28.40 | 13.35 | 34.41 | ||||||||||
1985 | 10.45 | 13.19 | a | 22.23 | 35.50 | 42.81 | 49.73 | 58.52 | 47.55 | 39.47 | 30.26 | 16.23 | 4.07 | b | 30.83 | |||||||||||
1986 | 18.13 | 27.89 | a | 31.23 | 33.10 | 38.73 | a | 55.20 | 53.55 | 53.97 | 41.57 | 33.65 | 27.73 | 17.13 | 35.99 | |||||||||||
1987 | 16.19 | 26.30 | a | 30.58 | ----- | z | 46.61 | 52.20 | 52.61 | 49.52 | 40.47 | 33.58 | 28.03 | a | 19.81 | 35.99 | a | |||||||||
1988 | 18.68 | 25.62 | 29.30 | a | ----- | z | 41.39 | 54.23 | 57.60 | a | 52.55 | 42.13 | 40.16 | 30.23 | 18.68 | 37.32 | a | |||||||||
1989 | 15.52 | 16.85 | a | 32.23 | 38.03 | 42.10 | 50.27 | 57.55 | 52.81 | 42.83 | 36.00 | 27.77 | 20.35 | 36.03 | ||||||||||||
1990 | 22.26 | 21.75 | 31.29 | 40.07 | 42.00 | 49.97 | 57.55 | 53.00 | 49.48 | a | 34.52 | 27.80 | 5.93 | a | 36.30 | |||||||||||
1991 | 15.80 | a | 26.18 | 29.83 | a | 34.67 | 41.52 | b | 48.13 | 57.61 | 54.73 | a | 46.50 | 35.94 | 27.10 | a | 20.77 | a | 36.57 | |||||||
1992 | 19.23 | a | 27.52 | 33.10 | 38.60 | 47.13 | 52.33 | 54.58 | 54.29 | 44.50 | 38.71 | 25.67 | 18.14 | b | 37.82 | |||||||||||
1993 | 13.47 | a | 17.56 | a | 31.29 | 37.14 | b | 46.45 | 47.73 | 50.60 | a | 51.58 | 42.77 | 36.69 | b | 18.36 | b | 22.00 | 34.64 | |||||||
1994 | 25.26 | 20.57 | 30.23 | 37.00 | f | 46.52 | 51.07 | 56.50 | a | 55.63 | a | 46.59 | a | 36.26 | 23.38 | a | 19.93 | b | 37.45 | a | ||||||
1995 | 25.26 | 26.93 | 30.04 | c | 34.53 | 43.16 | 48.62 | a | 54.57 | a | 51.48 | 45.07 | 32.80 | a | 32.13 | 24.35 | 37.41 | |||||||||
1996 | 21.93 | b | 23.31 | c | 30.71 | 35.56 | e | 42.33 | a | 49.93 | 56.48 | b | 52.61 | 43.52 | c | 34.97 | b | 29.39 | b | 25.41 | b | 37.18 | ||||
1997 | 23.92 | e | 25.46 | d | 29.21 | c | 34.15 | c | 45.10 | b | 51.93 | a | 54.97 | b | 54.08 | f | 48.17 | g | 34.39 | c | 26.06 | n | 20.30 | d | 35.49 | c |
1998 | 27.96 | f | 27.38 | g | 30.55 | b | 35.00 | d | 43.86 | c | 48.43 | g | 60.43 | a | 58.03 | a | 52.78 | c | 34.76 | f | 31.38 | f | 21.62 | g | 46.78 | f |
1999 | 26.62 | g | 26.44 | j | 30.61 | h | 32.96 | f | 41.64 | f | 51.50 | b | 55.00 | d | 56.39 | c | 43.10 | i | 35.83 | h | 29.40 | j | 23.69 | b | 46.65 | h |
2000 | 26.32 | i | 30.55 | i | 29.61 | c | 39.58 | d | 47.04 | c | 51.67 | f | 57.53 | a | 56.15 | e | 46.14 | b | 37.65 | h | 22.30 | g | ----- | z | 46.01 | f |
2001 | 17.69 | r | ----- | z | 34.03 | b | 35.25 | b | 43.52 | d | 47.82 | m | 58.63 | d | 58.27 | a | 47.37 | 37.40 | k | 30.70 | 21.17 | a | 41.12 | d | ||
2002 | 23.59 | b | 17.44 | a | 27.06 | 37.50 | 43.71 | 50.80 | 61.33 | a | 53.00 | 46.27 | 33.83 | a | 26.89 | b | 26.27 | a | 37.31 | |||||||
2003 | 28.34 | b | 23.48 | a | 33.35 | 35.90 | 44.43 | a | 51.28 | a | 60.84 | 57.68 | 46.40 | 39.83 | a | 26.28 | a | 29.17 | a | 39.75 | ||||||
2004 | 20.55 | b | 22.43 | a | 33.97 | 38.77 | 45.26 | 51.57 | 57.61 | 54.84 | 46.50 | 40.58 | 28.30 | 26.03 | 38.87 | |||||||||||
2005 | 23.61 | 21.26 | a | 32.03 | 34.30 | 43.29 | ----- | z | 57.32 | 54.13 | 43.00 | 36.58 | 26.83 | 20.11 | c | 35.68 | a | |||||||||
2006 | 27.81 | 21.00 | 28.10 | 37.20 | 43.74 | 53.90 | 62.42 | 54.23 | ----- | z | ----- | z | ----- | z | 21.52 | j | 41.05 | d | ||||||||
2007 | 16.35 | 30.04 | 32.93 | a | 37.80 | 45.94 | 51.00 | 62.13 | 56.32 | 46.83 | 36.90 | 27.00 | 23.48 | 38.89 | ||||||||||||
2008 | 16.45 | 25.17 | 29.59 | d | 30.63 | 43.70 | a | 50.83 | 57.97 | 56.58 | 45.27 | 36.32 | 33.41 | a | 19.90 | b | 37.15 | |||||||||
2009 | 23.03 | b | 24.11 | 29.16 | 35.34 | a | 45.03 | 52.50 | 58.61 | 55.03 | 49.90 | 35.60 | a | 26.77 | 17.07 | a | 37.68 | |||||||||
2010 | 25.80 | a | 27.46 | 29.87 | 35.13 | 39.37 | a | 52.07 | 57.13 | 54.84 | 45.63 | 40.71 | 27.67 | 27.39 | 38.59 | |||||||||||
2011 | 22.19 | 23.32 | 32.32 | 35.13 | 41.32 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.86 | g | |||||
2012 | ----- | z | ----- | z | ----- | z | 48.00 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 20.65 | 23.25 | 30.27 | 35.49 | 43.17 | 50.54 | 56.73 | 54.13 | 44.96 | 35.67 | 27.22 | 20.51 | 36.66 | |||||||||||||
S.D. | 4.59 | 4.08 | 2.38 | 2.50 | 2.42 | 2.28 | 3.04 | 2.48 | 2.91 | 2.64 | 3.78 | 5.60 | 1.99 | |||||||||||||
SKEW | -0.26 | -0.53 | -1.02 | -0.31 | -0.05 | -0.14 | -0.16 | -0.59 | 0.52 | 0.40 | -1.19 | -1.35 | -1.13 | |||||||||||||
MAX | 28.34 | 30.04 | 34.03 | 40.07 | 47.13 | 55.20 | 62.42 | 58.27 | 52.78 | 40.71 | 33.41 | 29.17 | 39.75 | |||||||||||||
MIN | 10.45 | 13.19 | 22.23 | 29.53 | 38.73 | 45.70 | 50.45 | 47.55 | 39.47 | 30.26 | 16.23 | 4.07 | 30.83 | |||||||||||||
YRS | 27 | 28 | 31 | 28 | 31 | 27 | 31 | 30 | 28 | 26 | 26 | 28 | 20 |