YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.45 | a | 52.62 | b | 43.62 | d | ----- | z | ----- | z | ----- | z | 50.23 | i |
1984 | 12.58 | r | 23.00 | g | 35.38 | c | 37.50 | a | 42.82 | c | 51.22 | 55.26 | 53.87 | a | 47.02 | 31.71 | l | 19.81 | f | 21.64 | j | 46.15 | e | |||
1985 | 32.81 | e | 16.46 | a | 28.00 | a | 28.09 | a | 40.94 | e | 47.16 | a | 54.55 | a | 51.67 | a | 46.41 | a | 29.66 | b | 10.50 | k | 26.73 | t | 37.57 | b |
1986 | 25.64 | f | 21.81 | d | 24.94 | d | 29.92 | f | 44.33 | g | 50.09 | a | 55.00 | 50.42 | a | 46.60 | 40.71 | j | ----- | z | ----- | z | 41.48 | f | ||
1987 | 26.83 | a | 28.46 | 26.67 | a | 35.41 | n | 42.67 | a | 48.54 | b | 54.30 | a | 52.75 | a | 45.42 | 37.55 | 26.07 | c | 16.45 | k | 38.93 | b | |||
1988 | 20.48 | c | 27.94 | d | 31.26 | b | 34.20 | 42.30 | d | 50.62 | 55.71 | 52.21 | b | 44.95 | b | 35.72 | a | 22.69 | d | 19.19 | d | 36.44 | ||||
1989 | -1.24 | h | 19.32 | f | 24.88 | k | 39.44 | v | 45.13 | h | 49.50 | b | 56.22 | b | 53.41 | c | 46.98 | h | 34.48 | a | 19.55 | b | 27.50 | c | 40.11 | f |
1990 | 13.41 | b | 7.44 | b | 28.23 | c | 37.15 | d | 45.63 | e | 53.57 | b | 55.29 | c | 53.91 | c | 46.81 | a | 32.73 | a | 13.50 | a | 17.10 | 33.73 | ||
1991 | 14.92 | 22.55 | 26.58 | 37.08 | 42.60 | b | 51.48 | a | 52.93 | b | 51.08 | e | 47.54 | d | 34.98 | a | 26.38 | b | 19.41 | c | 35.63 | |||||
1992 | 20.72 | a | 12.05 | a | 24.05 | 32.57 | a | 38.96 | g | 50.69 | c | 54.65 | 50.50 | a | 37.36 | e | 30.95 | 25.37 | c | 13.54 | c | 32.04 | a | |||
1993 | 14.57 | d | 23.17 | b | 31.25 | a | 39.38 | 45.57 | c | 51.17 | a | 57.23 | 53.91 | d | 46.46 | f | 38.66 | 25.87 | c | 24.29 | c | 36.82 | a | |||
1994 | 22.95 | c | 12.98 | d | 25.62 | b | 38.28 | c | 43.57 | b | 52.85 | c | 53.78 | a | 56.60 | 45.25 | d | 34.63 | 17.55 | 20.62 | b | 35.39 | ||||
1995 | 17.32 | a | 19.58 | b | 18.17 | b | 39.22 | a | 43.12 | a | 51.92 | 54.80 | a | 52.47 | 49.29 | b | 37.60 | e | 21.33 | d | 23.67 | b | 35.71 | |||
1996 | 8.38 | g | 20.82 | i | 30.07 | k | 36.28 | 46.87 | a | 51.31 | d | 55.37 | a | 52.86 | b | 44.63 | d | 27.83 | a | 20.79 | f | 13.18 | c | 41.04 | d | |
1997 | 16.19 | g | 33.50 | c | 24.98 | a | 35.12 | i | 47.00 | c | 54.06 | d | 57.87 | e | 55.71 | 47.90 | a | 29.88 | g | 27.95 | b | 15.46 | c | 40.49 | c | |
1998 | 19.25 | c | 28.92 | b | 34.13 | 36.29 | a | 41.19 | d | 51.67 | a | 54.47 | 51.86 | b | 44.98 | c | 34.17 | b | 25.60 | d | 14.93 | d | 36.45 | |||
1999 | 10.38 | e | 5.19 | b | ----- | z | 33.57 | b | 41.93 | j | 52.13 | c | 57.19 | e | 53.93 | h | 46.52 | 36.34 | f | 23.14 | a | 13.67 | e | 30.22 | d | |
2000 | 13.81 | e | 28.00 | c | 33.08 | a | 37.80 | g | 43.25 | a | 52.09 | c | 53.48 | c | 51.85 | a | 45.52 | a | 35.55 | c | 30.64 | e | 27.76 | f | 38.73 | b |
2001 | 28.34 | c | 23.76 | a | 29.52 | b | 34.79 | d | ----- | z | ----- | z | ----- | z | 54.98 | i | 47.09 | h | 30.96 | c | 20.61 | b | 10.06 | f | 28.00 | f |
2002 | 26.03 | p | ----- | z | 29.31 | w | ----- | z | 43.75 | k | ----- | z | 55.71 | c | 52.35 | d | 47.46 | d | 41.75 | a | 36.38 | 24.14 | c | 42.97 | f | |
2003 | 25.29 | b | 32.37 | a | 25.20 | c | 38.29 | f | 44.45 | j | 51.00 | d | 57.11 | i | 54.33 | h | ----- | z | ----- | z | ----- | z | ----- | z | 33.46 | h |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 36.46 | c | 28.60 | d | 24.23 | a | 29.76 | i |
2005 | 20.31 | b | ----- | z | ----- | z | ----- | z | 48.80 | h | ----- | z | ----- | z | ----- | z | ----- | z | 33.10 | g | 16.23 | f | 27.43 | d | 23.87 | j |
2006 | 11.98 | a | 23.33 | g | 26.69 | j | ----- | z | 45.58 | a | 52.21 | b | 56.25 | a | 54.29 | b | 47.59 | c | 37.93 | c | 8.40 | f | 20.00 | m | 43.69 | e |
2007 | 16.66 | f | 20.57 | g | 11.68 | l | ----- | z | ----- | z | ----- | z | 57.53 | a | 54.55 | c | 49.37 | g | ----- | z | ----- | z | ----- | z | 56.04 | j |
2008 | ----- | z | ----- | z | 26.38 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.90 | b | 21.67 | f | 14.09 | c | 22.49 | j |
2009 | 10.59 | i | 18.82 | c | 24.15 | g | 33.81 | f | 47.27 | g | 52.14 | a | 56.02 | c | 52.11 | ----- | z | 39.98 | d | 22.78 | n | 19.41 | o | 43.81 | g | |
2010 | 19.87 | l | 27.04 | d | 26.80 | i | 33.31 | v | 46.09 | o | 50.74 | c | 51.40 | a | 50.93 | a | 50.61 | k | 34.42 | l | 26.38 | v | 8.98 | f | 45.03 | h |
2011 | 21.19 | g | 17.87 | e | 22.17 | y | 35.78 | u | 44.38 | g | 49.92 | d | 54.19 | b | 50.90 | a | 45.29 | m | 35.27 | p | 13.39 | c | ----- | z | 37.25 | g |
2012 | ----- | z | 25.91 | a | 20.76 | 33.57 | o | ----- | z | 50.64 | a | 52.07 | b | 51.91 | c | 45.42 | j | 30.77 | 15.83 | 13.33 | a | 32.65 | d | |||
2013 | 25.77 | 26.93 | 24.53 | b | 26.38 | m | 42.79 | s | 53.93 | b | 57.08 | 52.37 | 45.48 | g | 39.75 | a | 23.44 | e | ----- | z | 37.98 | d | ||||
2014 | ----- | z | ----- | z | ----- | z | ----- | z | 48.87 | e | ----- | z | 55.79 | 53.25 | a | 49.23 | o | 31.64 | i | 31.08 | x | ----- | z | 52.64 | i | |
2015 | 22.23 | p | 21.26 | k | 28.32 | n | ----- | z | ----- | z | 51.12 | 54.78 | a | 53.60 | a | ----- | z | 40.00 | r | ----- | z | ----- | z | 53.17 | i | |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | 49.97 | o | 54.80 | b | ----- | z | 54.52 | a | ----- | z | ----- | z | ----- | z | ----- | z | 54.66 | j |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 19.95 | 21.94 | 27.35 | 35.72 | 44.13 | 51.41 | 55.12 | 52.80 | 45.83 | 34.91 | 23.36 | 19.16 | 35.56 | |||||||||||||
S.D. | 6.39 | 7.77 | 4.51 | 3.11 | 2.32 | 1.68 | 1.56 | 1.52 | 2.53 | 3.77 | 5.85 | 5.19 | 1.00 | |||||||||||||
SKEW | 0.30 | -0.62 | -0.01 | -1.07 | 0.50 | -0.22 | -0.34 | 0.52 | -2.06 | -0.08 | 0.07 | 0.28 | -1.04 | |||||||||||||
MAX | 32.81 | 33.50 | 35.38 | 39.38 | 48.87 | 54.80 | 57.87 | 56.60 | 49.29 | 41.75 | 36.38 | 27.50 | 36.45 | |||||||||||||
MIN | 10.38 | 5.19 | 18.17 | 28.09 | 40.94 | 47.16 | 51.40 | 50.42 | 37.36 | 27.83 | 13.39 | 13.18 | 33.73 | |||||||||||||
YRS | 17 | 21 | 18 | 13 | 15 | 26 | 28 | 28 | 18 | 21 | 19 | 17 | 6 |