YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 41.32 | e | 47.74 | 49.65 | 39.25 | b | 29.00 | c | 23.72 | a | 19.31 | b | 35.71 | e | ||
1987 | 9.47 | a | 19.67 | a | 19.42 | e | 29.38 | a | 35.19 | 39.03 | 43.42 | 47.48 | b | 38.00 | 33.68 | 23.30 | 13.14 | c | 29.27 | |||||||
1988 | 14.84 | 18.62 | 20.25 | c | 27.63 | 32.84 | 43.07 | 48.53 | a | 49.13 | 37.52 | a | 34.57 | a | 20.37 | 11.45 | 29.90 | |||||||||
1989 | 10.71 | 18.88 | b | 22.81 | 28.67 | 33.55 | 37.57 | b | 48.10 | a | 44.83 | a | 39.17 | 30.66 | b | 21.93 | 12.84 | 29.14 | ||||||||
1990 | 10.03 | 9.57 | 22.87 | 31.20 | 31.53 | a | 41.14 | b | 49.23 | 45.35 | 45.24 | a | 28.35 | 23.10 | a | 10.76 | f | 30.69 | a | |||||||
1991 | 16.13 | 20.43 | 17.90 | a | 23.93 | 29.52 | d | 35.32 | e | 47.60 | a | 47.43 | a | 42.25 | b | 30.77 | a | 24.79 | a | 21.35 | 29.79 | |||||
1992 | 15.32 | 24.32 | a | 26.42 | 29.27 | 37.58 | e | 38.21 | a | 46.39 | c | 48.37 | a | 36.79 | b | 29.72 | b | 18.32 | b | 8.55 | 29.94 | |||||
1993 | 19.71 | 21.32 | c | 23.26 | 26.53 | 34.04 | d | 36.64 | b | 42.97 | b | 48.21 | b | 36.97 | 29.96 | c | 19.07 | b | 14.61 | 29.44 | ||||||
1994 | 15.29 | 13.04 | 24.41 | d | 26.97 | 32.93 | c | 41.10 | 45.86 | b | 50.20 | a | 39.79 | b | 23.35 | 15.20 | 16.67 | a | 28.73 | |||||||
1995 | 12.53 | a | 20.54 | 21.72 | b | 22.23 | 29.00 | c | 34.20 | 39.67 | a | 46.31 | e | 38.29 | b | 24.52 | 21.60 | 17.81 | 27.37 | |||||||
1996 | 12.37 | a | 23.43 | a | 20.90 | 26.30 | 33.63 | a | 41.00 | 52.00 | 48.93 | a | 41.50 | 28.97 | a | 22.50 | 18.74 | 30.86 | ||||||||
1997 | 16.29 | c | 18.52 | a | 20.00 | a | 27.50 | 36.27 | a | 37.11 | c | 44.85 | e | 50.32 | 47.13 | 30.03 | b | 22.54 | b | 16.80 | a | 30.61 | ||||
1998 | 18.42 | 15.57 | 21.06 | 23.29 | f | 30.84 | 35.17 | a | 48.52 | h | 49.72 | b | 44.00 | 29.29 | 21.07 | 17.62 | j | 29.46 | c | |||||||
1999 | 15.90 | a | 17.74 | a | 19.65 | 23.24 | a | 31.45 | 39.35 | d | 51.53 | a | 49.70 | a | 41.55 | a | 27.97 | a | 21.43 | 16.16 | f | 30.86 | a | |||
2000 | 14.71 | 21.57 | f | 21.03 | b | 27.17 | a | 34.70 | a | 42.46 | b | 46.61 | 50.19 | e | 41.39 | b | 32.63 | a | 16.26 | c | 17.52 | d | 31.34 | a | ||
2001 | 13.77 | 13.68 | 24.48 | 29.46 | b | 36.11 | c | 40.35 | d | 49.85 | e | 49.14 | c | 39.64 | b | 31.28 | b | 24.85 | d | 8.87 | h | 32.06 | a | |||
2002 | 16.58 | e | 15.38 | d | 18.97 | b | 28.36 | b | 29.73 | a | 37.81 | d | 49.57 | c | 44.43 | c | 39.61 | g | 29.97 | a | 24.33 | 13.47 | a | 28.05 | a | |
2003 | 21.74 | 20.43 | 22.00 | e | 24.50 | 35.39 | 39.33 | 50.81 | 51.81 | 42.29 | b | 34.39 | 23.83 | a | 16.65 | 31.93 | ||||||||||
2004 | 18.03 | 13.41 | 26.87 | 29.30 | 32.42 | 37.97 | 45.93 | a | 46.23 | 41.13 | 32.86 | c | 25.81 | c | 20.23 | 30.85 | ||||||||||
2005 | 24.03 | a | 26.75 | 25.74 | 28.83 | 36.42 | 39.77 | 47.74 | 48.83 | a | 39.93 | 33.58 | 21.83 | 15.19 | 32.39 | |||||||||||
2006 | 14.94 | 17.41 | a | 21.10 | 29.03 | 35.77 | 42.40 | 54.19 | 49.84 | 40.57 | b | 31.52 | 22.79 | a | 15.26 | 31.23 | ||||||||||
2007 | 14.81 | 17.37 | a | 25.00 | 28.10 | 34.77 | 38.90 | 50.32 | 51.35 | 42.27 | 31.10 | 23.39 | b | 14.52 | 30.99 | |||||||||||
2008 | 12.65 | 15.82 | a | 21.53 | a | 27.03 | 31.33 | a | 38.38 | a | 50.90 | 50.45 | 39.60 | 28.97 | 27.17 | 15.70 | a | 29.96 | ||||||||
2009 | 18.97 | 15.81 | a | 22.58 | g | 26.07 | 37.26 | 40.50 | b | 49.45 | 43.41 | b | 42.13 | 28.00 | 23.20 | 10.32 | 30.47 | a | ||||||||
2010 | 15.32 | 19.00 | a | 20.40 | a | 26.63 | 30.58 | 38.27 | 52.52 | 50.45 | 39.55 | a | 35.87 | 21.30 | 22.52 | 31.03 | ||||||||||
2011 | 12.47 | a | 14.25 | 24.26 | 28.87 | 31.55 | 36.38 | a | 49.70 | a | 50.06 | 43.37 | 30.68 | 23.90 | 14.06 | 29.96 | ||||||||||
2012 | 19.13 | 19.71 | a | 18.94 | 28.50 | 32.17 | a | 39.23 | 52.33 | d | 51.90 | 42.83 | 29.90 | a | 22.67 | l | 11.38 | b | 31.46 | a | ||||||
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 15.54 | 18.03 | 22.04 | 27.39 | 33.33 | 38.96 | 48.38 | 48.66 | 40.85 | 30.43 | 22.22 | 15.57 | 30.19 | |||||||||||||
S.D. | 3.48 | 3.85 | 2.48 | 2.14 | 2.48 | 2.29 | 3.32 | 2.27 | 2.51 | 2.82 | 2.72 | 3.53 | 1.20 | |||||||||||||
SKEW | 0.41 | 0.11 | 0.36 | -0.77 | 0.00 | -0.17 | -0.64 | -0.75 | 0.46 | -0.39 | -0.87 | 0.06 | -0.32 | |||||||||||||
MAX | 24.03 | 26.75 | 26.87 | 31.20 | 37.58 | 43.07 | 54.19 | 51.90 | 47.13 | 35.87 | 27.17 | 22.52 | 32.39 | |||||||||||||
MIN | 9.47 | 9.57 | 17.90 | 22.23 | 29.00 | 34.20 | 39.67 | 43.41 | 36.79 | 23.35 | 15.20 | 8.55 | 27.37 | |||||||||||||
YRS | 26 | 25 | 25 | 25 | 26 | 27 | 26 | 27 | 26 | 27 | 26 | 23 | 18 |