YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 25.27 | d | 12.96 | e | 19.12 | j |
1979 | 8.38 | e | 20.00 | e | 26.30 | k | 27.96 | c | 39.17 | a | 47.63 | 53.28 | b | 51.81 | d | 50.05 | j | 36.10 | j | 23.75 | j | 22.56 | o | 35.46 | e | |
1980 | 14.72 | m | 26.96 | f | 19.61 | h | 31.27 | h | ----- | z | 41.40 | j | 55.19 | j | 48.29 | g | ----- | z | ----- | z | ----- | z | 24.10 | u | ----- | z |
1981 | 24.54 | r | 17.72 | j | 20.71 | j | 33.24 | i | 34.31 | o | ----- | z | 50.00 | j | 57.90 | j | 49.11 | l | 32.09 | i | 30.83 | l | 19.33 | m | ----- | z |
1982 | 12.45 | k | 13.65 | h | 16.00 | l | 22.90 | j | 33.05 | k | 44.24 | i | 49.81 | j | 52.00 | i | 41.05 | i | 31.19 | j | 20.20 | j | 16.05 | k | ----- | z |
1983 | 24.24 | j | 19.90 | h | 25.70 | h | 23.43 | i | 34.14 | j | 41.77 | h | 47.50 | k | 52.87 | h | 41.78 | c | 37.35 | k | 24.55 | j | 10.94 | o | 41.78 | k |
1984 | 17.52 | j | 17.04 | d | 23.45 | 26.25 | b | 34.69 | b | 41.13 | 55.97 | b | 54.84 | 43.17 | a | 28.37 | a | 19.54 | d | 15.00 | a | 32.68 | a | |||
1985 | 15.48 | b | 13.68 | 19.71 | 33.21 | b | 41.83 | a | 50.31 | a | 59.71 | 50.23 | a | 37.10 | 32.62 | b | 15.86 | b | 21.12 | g | 33.61 | a | ||||
1986 | 27.50 | c | 26.81 | b | 33.23 | 30.43 | 39.74 | 52.93 | 52.00 | 61.15 | d | 38.52 | a | 38.39 | 27.36 | b | 24.32 | 37.70 | ||||||||
1987 | 16.53 | a | 22.25 | 24.67 | a | 33.63 | 41.23 | 47.07 | 48.06 | 52.03 | 49.52 | c | 42.65 | 29.12 | d | 19.14 | j | 36.98 | a | |||||||
1988 | 19.25 | k | 23.75 | i | 22.87 | h | 34.48 | i | 39.05 | j | 48.00 | h | 53.24 | f | 52.74 | 44.10 | 43.93 | c | 23.12 | d | 18.61 | 36.50 | g | |||
1989 | 17.15 | d | 13.32 | 25.97 | b | 35.25 | b | 36.74 | 49.33 | 57.87 | 51.06 | 48.07 | c | 35.47 | a | 26.57 | 24.32 | 35.09 | ||||||||
1990 | 23.10 | a | 17.61 | 27.81 | 36.31 | a | 35.21 | g | 46.86 | b | 57.03 | 55.52 | 52.83 | 36.64 | f | 28.20 | 12.00 | m | 38.36 | c | ||||||
1991 | 20.68 | i | 30.37 | i | 22.76 | j | 29.41 | h | 32.47 | l | 41.00 | j | 54.73 | i | 57.82 | i | 47.62 | f | 38.63 | a | 27.17 | 23.57 | a | 29.79 | i | |
1992 | 25.97 | 28.04 | b | 32.00 | 36.60 | 47.23 | 48.96 | b | 52.00 | 57.29 | 46.80 | 41.35 | 24.43 | 19.03 | 38.31 | |||||||||||
1993 | 17.00 | 19.37 | a | 29.65 | 29.10 | 43.45 | 41.73 | 45.23 | 49.23 | a | 47.45 | a | 38.68 | 23.03 | 22.16 | 33.84 | ||||||||||
1994 | 25.33 | a | 19.18 | 30.10 | a | 34.67 | 44.19 | 48.03 | 59.90 | 58.23 | 50.67 | 35.16 | 18.67 | 20.13 | 37.02 | |||||||||||
1995 | 24.10 | a | 29.75 | 26.23 | 29.87 | 39.81 | 43.70 | c | 53.74 | 54.13 | 49.43 | 36.19 | 32.79 | b | 24.37 | a | 37.01 | |||||||||
1996 | 21.65 | 23.66 | 27.13 | 32.77 | 37.55 | 49.33 | 59.84 | 57.06 | 44.57 | 39.20 | a | 29.72 | a | 23.45 | 37.16 | |||||||||||
1997 | 20.43 | a | 20.79 | 26.35 | 28.77 | 44.39 | 47.70 | 55.52 | 57.00 | 50.31 | a | 36.81 | 32.43 | 25.30 | a | 37.15 | ||||||||||
1998 | 27.00 | b | 24.14 | 27.90 | 30.13 | 37.80 | a | 42.57 | 62.74 | 60.29 | ----- | z | 31.87 | 29.90 | a | 18.50 | a | 35.71 | a | |||||||
1999 | 19.74 | 15.40 | m | 22.20 | f | 25.39 | l | 34.35 | n | 42.22 | l | 52.78 | v | 48.36 | q | 43.23 | q | 36.00 | t | 34.50 | t | ----- | z | 19.74 | k | |
2000 | 12.77 | r | 12.29 | v | 16.80 | p | 29.00 | o | 31.74 | l | 46.39 | l | 57.47 | p | 57.50 | k | 44.80 | o | 33.55 | t | 20.46 | q | 22.88 | w | ----- | z |
2001 | 20.69 | r | 17.56 | l | 28.09 | t | 30.19 | n | 42.75 | o | 43.33 | o | 51.87 | p | 62.32 | l | 51.25 | n | 37.00 | j | 24.45 | s | 19.00 | o | ----- | z |
2002 | 17.00 | l | 19.44 | j | ----- | z | 31.10 | j | 34.71 | j | 48.56 | n | ----- | z | 48.71 | j | 43.11 | l | 31.95 | j | 29.27 | o | 22.90 | k | ----- | z |
2003 | 25.95 | k | 18.43 | n | 25.22 | m | 25.90 | j | 40.12 | o | 46.47 | k | 57.64 | q | 56.71 | q | 41.58 | k | 32.06 | o | 15.24 | m | 17.61 | m | ----- | z |
2004 | 15.71 | q | 14.69 | p | ----- | z | ----- | z | 34.20 | k | 41.81 | n | 50.78 | m | 47.22 | m | 43.79 | a | 33.30 | a | 22.97 | a | 25.17 | a | 31.31 | h |
2005 | 23.27 | a | 23.75 | 27.80 | a | 33.60 | 41.26 | 45.93 | a | 60.29 | 59.00 | 47.55 | a | 39.74 | 28.23 | 21.64 | c | 37.67 | ||||||||
2006 | 22.85 | d | 18.07 | 22.42 | 31.75 | b | 42.26 | 51.28 | e | 63.39 | 55.47 | a | 48.31 | a | 37.29 | 27.73 | 19.61 | c | 36.70 | |||||||
2007 | 15.37 | a | 24.04 | a | 30.55 | ----- | z | 42.71 | 48.77 | ----- | z | 57.32 | 46.50 | ----- | z | 29.07 | a | 15.77 | a | 34.45 | c | |||||
2008 | 16.00 | b | 21.48 | b | 21.10 | 24.23 | 38.19 | 46.73 | 58.67 | a | 56.48 | ----- | z | ----- | z | 32.28 | a | 18.43 | a | 33.36 | b | |||||
2009 | 20.97 | 19.85 | a | ----- | z | 29.10 | 41.71 | 45.18 | b | 57.61 | ----- | z | 52.00 | 31.65 | ----- | z | 15.97 | 34.89 | c | |||||||
2010 | 23.81 | 21.93 | 23.58 | ----- | z | 30.87 | h | 44.67 | 53.94 | 52.35 | ----- | z | 41.29 | ----- | z | ----- | z | 37.37 | e | |||||||
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.26 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.26 | k | |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 18.21 | c | 18.21 | k |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | 40.87 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 20.58 | 21.24 | 26.65 | 31.31 | 40.77 | 46.99 | 56.30 | 55.16 | 46.45 | 36.98 | 26.35 | 20.33 | 36.77 | |||||||||||||
S.D. | 4.86 | 4.30 | 3.71 | 3.46 | 3.12 | 3.14 | 4.66 | 3.38 | 4.28 | 4.12 | 4.56 | 3.70 | 1.33 | |||||||||||||
SKEW | -0.64 | 0.05 | -0.09 | -0.23 | 0.03 | -0.22 | -0.68 | -0.05 | -0.62 | -0.28 | -0.65 | -0.27 | -1.22 | |||||||||||||
MAX | 27.50 | 29.75 | 33.23 | 36.60 | 47.23 | 52.93 | 63.39 | 61.15 | 52.83 | 43.93 | 32.79 | 25.30 | 38.31 | |||||||||||||
MIN | 8.38 | 13.32 | 19.71 | 24.23 | 34.69 | 41.13 | 45.23 | 49.23 | 37.10 | 28.37 | 15.86 | 12.96 | 33.84 | |||||||||||||
YRS | 20 | 20 | 18 | 18 | 18 | 20 | 20 | 20 | 19 | 19 | 21 | 20 | 10 |