YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 46.63 | 38.10 | 26.70 | 12.33 | a | 30.94 | h | |||
1969 | 16.27 | a | 13.89 | 20.52 | 36.17 | 45.26 | 50.00 | 59.58 | 60.26 | 50.50 | 32.65 | 23.83 | 20.00 | 35.74 | ||||||||||||
1970 | 17.16 | 25.39 | 25.84 | 28.43 | 43.65 | 53.13 | 60.61 | 60.06 | 44.70 | 34.29 | 28.37 | 16.45 | 36.51 | |||||||||||||
1971 | 16.42 | 21.04 | 23.61 | 33.90 | 41.00 | 51.20 | 56.10 | 59.10 | 43.43 | 36.00 | 24.20 | 13.94 | 34.99 | |||||||||||||
1972 | 15.74 | 22.72 | 31.81 | 32.33 | 43.71 | 53.00 | 60.45 | 58.06 | 48.87 | 42.70 | a | 24.90 | 8.94 | 36.94 | ||||||||||||
1973 | 4.39 | 15.68 | 26.74 | 31.57 | 42.00 | 49.43 | 56.29 | 56.55 | 47.63 | 40.27 | a | 25.52 | a | 15.35 | 34.28 | |||||||||||
1974 | 5.61 | 9.79 | 26.23 | 28.43 | 43.39 | 57.13 | 62.74 | 56.45 | 48.57 | 42.10 | b | 28.13 | 17.74 | 35.53 | ||||||||||||
1975 | 10.45 | 18.00 | 27.23 | 28.31 | a | 37.58 | 44.38 | f | 57.26 | 54.84 | 46.79 | a | 36.71 | g | 17.31 | q | 16.96 | c | 33.05 | c | ||||||
1976 | 11.77 | 27.00 | 24.41 | i | 34.57 | 44.13 | a | 48.41 | c | 60.27 | a | 54.42 | 50.80 | 35.77 | 30.71 | f | 13.03 | 38.02 | b | |||||||
1977 | 9.71 | 20.46 | 22.45 | 37.30 | 40.48 | 54.73 | 58.42 | 58.40 | a | 48.77 | ----- | z | ----- | z | 24.23 | 37.50 | b | |||||||||
1978 | 15.16 | 19.07 | ----- | z | ----- | z | 44.16 | l | 53.00 | 60.23 | 56.74 | 46.76 | a | 39.95 | k | 29.90 | a | 9.27 | a | 36.27 | d | |||||
1979 | 6.03 | 9.80 | c | 25.71 | 34.57 | 43.90 | 50.90 | 57.65 | 55.46 | e | 53.50 | 41.63 | a | 21.63 | 17.81 | 34.88 | ||||||||||
1980 | 19.77 | a | 23.03 | 26.13 | 35.59 | a | 42.03 | 51.13 | 60.45 | 54.16 | 48.50 | 38.52 | 25.60 | 23.68 | 37.38 | |||||||||||
1981 | 22.84 | 20.75 | 29.19 | 39.83 | 42.58 | 56.03 | 60.00 | 58.52 | 52.53 | 37.16 | 29.20 | 21.10 | 39.14 | |||||||||||||
1982 | 9.16 | 16.68 | 29.03 | 31.57 | 42.33 | a | 50.21 | a | 56.90 | 58.65 | 49.43 | 34.65 | 25.07 | 19.23 | 35.24 | |||||||||||
1983 | 18.80 | a | 22.62 | b | 31.10 | 31.20 | 40.57 | c | 50.77 | 56.87 | 59.26 | 49.03 | 37.77 | 25.60 | 14.23 | 36.48 | ||||||||||
1984 | 7.26 | 16.31 | 26.94 | 32.10 | a | 45.58 | 48.57 | 58.00 | 57.77 | 47.70 | 33.77 | 24.20 | 14.20 | a | 34.37 | |||||||||||
1985 | 11.55 | 14.07 | 26.73 | a | 37.10 | a | 44.55 | 55.79 | a | 59.87 | 55.68 | 44.07 | a | 36.23 | 22.53 | 17.65 | 35.48 | |||||||||
1986 | 22.61 | 28.93 | 34.19 | 35.70 | 41.48 | 55.50 | 56.27 | a | 57.16 | 42.59 | a | 31.87 | a | 27.83 | 19.90 | 37.84 | ||||||||||
1987 | 14.45 | 23.71 | 25.27 | a | 35.86 | a | 44.74 | 54.17 | 56.16 | 54.03 | 48.90 | 40.77 | 27.90 | 17.39 | 36.95 | |||||||||||
1988 | 11.38 | g | 21.07 | 26.13 | 35.30 | 41.52 | f | 54.43 | 59.00 | 54.54 | r | 42.20 | o | 42.28 | b | 24.90 | a | 14.18 | c | 34.66 | d | |||||
1989 | 4.00 | l | 14.46 | b | 31.33 | d | 39.65 | d | 42.34 | b | 48.12 | f | 56.75 | s | 51.79 | q | 49.30 | c | 39.50 | o | 27.23 | h | 19.16 | 32.71 | f | |
1990 | 16.37 | a | 21.09 | e | 31.32 | i | 38.50 | 41.83 | h | 49.00 | g | 58.13 | h | 54.00 | h | 50.46 | d | 31.95 | l | 24.11 | l | 9.27 | i | 31.60 | h | |
1991 | 9.67 | g | 21.90 | h | 26.79 | g | 30.90 | j | 43.18 | i | 51.26 | k | 53.59 | n | 57.52 | j | 50.14 | i | 39.18 | i | 24.12 | m | ----- | z | ----- | z |
1992 | 9.52 | 25.66 | 32.94 | 42.12 | e | 47.77 | 51.37 | 54.55 | 55.61 | h | 49.35 | g | 41.10 | k | 25.00 | 13.22 | m | 36.11 | d | |||||||
1993 | 13.87 | h | 20.63 | i | 31.52 | j | 35.42 | k | 45.85 | k | 49.47 | 53.97 | 54.96 | f | 45.97 | 38.29 | j | 19.00 | b | 16.76 | b | 37.03 | g | |||
1994 | 19.03 | 17.57 | 31.47 | a | 33.65 | m | 44.37 | l | 54.33 | l | 59.38 | o | 59.75 | g | 49.71 | m | 36.81 | o | 22.10 | j | 15.36 | t | 22.69 | i | ||
1995 | 19.39 | m | 25.67 | m | 31.70 | k | 32.00 | p | 40.44 | m | 51.17 | r | 55.38 | o | 58.47 | n | 49.09 | s | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 13.64 | 19.53 | 27.65 | 34.55 | 42.95 | 52.30 | 58.26 | 57.14 | 48.06 | 37.58 | 25.50 | 16.67 | 36.12 | |||||||||||||
S.D. | 5.43 | 5.07 | 3.52 | 3.79 | 2.22 | 2.63 | 2.24 | 1.98 | 2.73 | 3.45 | 2.66 | 3.92 | 1.37 | |||||||||||||
SKEW | -0.04 | -0.20 | 0.06 | 0.00 | -0.20 | 0.23 | -0.08 | -0.11 | -0.17 | 0.02 | -0.47 | -0.08 | 0.58 | |||||||||||||
MAX | 22.84 | 28.93 | 34.19 | 42.12 | 47.77 | 57.13 | 62.74 | 60.26 | 53.50 | 42.70 | 29.90 | 24.23 | 39.14 | |||||||||||||
MIN | 4.39 | 9.79 | 20.52 | 28.31 | 37.58 | 48.41 | 53.97 | 54.03 | 42.59 | 31.87 | 19.00 | 8.94 | 34.28 | |||||||||||||
YRS | 22 | 24 | 21 | 22 | 20 | 21 | 22 | 19 | 23 | 18 | 20 | 23 | 15 |