YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 61.60 | o | 64.03 | 58.97 | 54.10 | 41.16 | 31.03 | 18.45 | 44.62 | f | ||||||
1961 | 11.61 | 27.39 | 29.61 | 37.13 | 47.03 | 60.57 | 66.00 | 64.97 | 48.60 | 37.97 | 25.00 | 20.97 | 39.74 | |||||||||||||
1962 | 12.23 | 24.25 | 27.77 | 41.33 | 46.61 | 56.07 | 63.65 | 62.13 | 51.70 | 42.68 | 29.28 | a | 16.23 | a | 39.49 | |||||||||||
1963 | 9.71 | 28.08 | d | 29.13 | a | 33.90 | a | 50.20 | a | 51.10 | a | 65.83 | a | 64.10 | b | 55.10 | a | 47.41 | b | 30.60 | 19.32 | 40.38 | ||||
1964 | 17.14 | b | 19.76 | 25.57 | a | 36.17 | 46.14 | b | 53.57 | 65.65 | 62.43 | a | 49.86 | a | ----- | z | 28.10 | 27.71 | 39.28 | a | ||||||
1965 | 26.97 | 24.75 | 25.68 | ----- | z | 44.87 | 54.60 | 64.10 | 61.37 | a | 46.93 | a | 39.26 | 33.90 | 21.65 | 40.37 | a | |||||||||
1966 | 19.65 | 23.25 | 29.55 | 37.47 | 52.42 | 57.80 | 68.32 | 63.23 | 55.33 | 36.97 | 32.73 | 22.23 | 41.58 | |||||||||||||
1967 | 20.35 | 27.32 | 33.90 | 34.80 | 45.32 | 53.13 | 65.80 | a | 63.94 | 54.27 | 37.71 | 29.46 | b | 16.77 | a | 40.23 | ||||||||||
1968 | 12.97 | 30.28 | 32.97 | 35.47 | 46.61 | 54.90 | 65.68 | 56.90 | 48.67 | 38.16 | 28.45 | a | 15.03 | a | 38.84 | |||||||||||
1969 | 21.93 | b | 21.85 | b | 28.11 | d | 37.68 | e | 51.89 | c | 52.81 | i | 62.63 | d | 65.00 | g | ----- | z | 36.76 | f | 24.81 | d | 22.90 | a | 33.97 | d |
1970 | 23.08 | f | 26.04 | a | 27.11 | c | 30.22 | g | 45.73 | e | 54.66 | a | 63.52 | 65.26 | 45.97 | 34.94 | 30.93 | 14.68 | 40.88 | b | ||||||
1971 | 20.63 | a | 24.48 | a | 28.32 | 36.23 | 46.23 | 55.33 | 64.48 | 64.03 | 48.70 | 36.55 | 27.77 | 19.84 | 39.38 | |||||||||||
1972 | 19.26 | 23.83 | 33.48 | 37.33 | 48.35 | 58.87 | 64.68 | 60.50 | a | 51.23 | 42.32 | 29.77 | 11.90 | 40.13 | ||||||||||||
1973 | 9.45 | 23.96 | 30.68 | 36.70 | 49.00 | 56.10 | 62.13 | 63.55 | 45.73 | 40.16 | 30.07 | 22.90 | 39.20 | |||||||||||||
1974 | 19.71 | 22.39 | 34.19 | 35.03 | 47.39 | 61.30 | 64.74 | 58.65 | 49.40 | 39.03 | 28.37 | 21.32 | 40.13 | |||||||||||||
1975 | 15.68 | 23.75 | 30.43 | a | 31.73 | 41.84 | 53.90 | 64.10 | 59.65 | 50.30 | 37.81 | 24.43 | 21.00 | 37.88 | ||||||||||||
1976 | 18.13 | 21.90 | 25.23 | 36.07 | 49.39 | 54.00 | 63.71 | 59.29 | 53.73 | 35.77 | 26.27 | 12.39 | 37.99 | |||||||||||||
1977 | 16.29 | 20.54 | 26.97 | 41.10 | 44.10 | 61.77 | 65.13 | 62.10 | 52.57 | 39.16 | 29.03 | 27.06 | 40.48 | |||||||||||||
1978 | 26.48 | 30.29 | 37.97 | 39.27 | 46.06 | 56.43 | 62.35 | 58.19 | 49.37 | 38.74 | 27.10 | 15.00 | 40.60 | |||||||||||||
1979 | 13.90 | 23.32 | 31.00 | b | ----- | z | 49.93 | a | 60.15 | c | 66.87 | 63.00 | 54.33 | 42.13 | 22.32 | b | 17.54 | e | 40.41 | a | ||||||
1980 | 22.60 | a | 23.07 | 30.71 | c | 41.37 | c | 45.57 | a | 54.77 | d | 66.63 | a | 60.44 | d | 51.00 | e | 36.94 | 28.27 | 24.00 | 40.45 | |||||
1981 | 24.13 | a | 24.46 | b | 32.56 | d | 40.79 | f | 46.58 | g | 60.41 | a | 66.43 | c | 63.93 | c | 53.78 | c | 39.52 | b | 32.00 | b | 23.92 | f | 44.14 | c |
1982 | 19.90 | 23.15 | b | 32.23 | 34.36 | b | 45.83 | a | 55.52 | a | 62.83 | a | 66.13 | 52.00 | 36.13 | 26.93 | a | 23.60 | a | 39.88 | ||||||
1983 | 22.58 | 27.96 | 33.57 | a | 34.80 | 43.42 | 55.43 | 61.42 | 63.42 | 53.67 | 39.68 | 30.77 | 21.86 | b | 40.71 | |||||||||||
1984 | 5.65 | 6.79 | 28.23 | 34.97 | 48.65 | 53.27 | 62.42 | 62.10 | 51.67 | 35.19 | 28.33 | 15.97 | a | 36.10 | ||||||||||||
1985 | 12.70 | a | 16.67 | a | 27.90 | 39.60 | 49.06 | 58.90 | a | 62.94 | 54.13 | 44.60 | 29.07 | a | 17.20 | 16.19 | 35.75 | |||||||||
1986 | 13.84 | 28.85 | a | 34.77 | a | 34.10 | 43.77 | 55.53 | 56.10 | 64.90 | 45.73 | 31.10 | 27.28 | a | 13.03 | 37.42 | ||||||||||
1987 | 11.47 | a | 26.18 | 32.07 | a | 38.53 | 48.77 | 57.40 | 61.03 | a | 59.39 | 49.53 | 40.10 | 29.07 | 20.73 | a | 39.52 | |||||||||
1988 | 8.52 | d | 19.83 | 30.32 | 38.97 | a | 46.59 | b | 59.87 | 65.71 | 59.84 | 50.23 | 42.17 | a | 30.37 | 15.19 | d | 38.97 | ||||||||
1989 | 7.46 | e | 14.00 | 32.44 | d | 42.70 | 47.94 | 54.17 | a | 67.25 | c | 60.85 | e | 49.04 | d | 38.77 | a | 25.10 | a | 17.13 | 38.07 | |||||
1990 | 20.77 | 19.93 | a | 33.50 | a | 43.28 | a | 46.23 | a | 57.89 | b | 65.23 | a | 60.00 | b | 54.28 | e | 38.45 | 27.97 | a | 7.48 | 39.58 | ||||
1991 | 14.48 | h | 22.47 | i | 27.80 | f | 35.35 | d | 43.04 | f | 55.21 | f | 63.79 | b | 63.11 | c | 54.96 | e | ----- | z | 28.41 | m | 16.33 | a | 46.71 | g |
1992 | 12.00 | b | 28.28 | d | 36.10 | a | 42.76 | a | 48.75 | c | 55.36 | e | 61.46 | c | 60.87 | a | 48.79 | b | 39.30 | a | 20.10 | a | 14.15 | e | 38.99 | |
1993 | 9.32 | 19.25 | 34.00 | a | 37.41 | a | 50.90 | b | 52.63 | 58.53 | a | 61.45 | 50.65 | d | 38.93 | c | 22.48 | a | 18.76 | b | 37.86 | |||||
1994 | 23.07 | a | 22.27 | b | 33.10 | b | 41.07 | a | 50.45 | 60.20 | 65.72 | b | 65.90 | 53.92 | e | 39.50 | a | 24.19 | c | 23.19 | 41.88 | |||||
1995 | 25.89 | d | 27.57 | 33.20 | a | 37.27 | d | 45.77 | a | 51.63 | 62.61 | c | 62.52 | 53.30 | g | 34.44 | f | 29.70 | c | 24.57 | a | 40.07 | b | |||
1996 | 20.67 | a | 20.45 | 32.75 | c | 38.82 | b | 46.86 | b | 58.31 | d | 65.00 | b | 60.70 | a | 50.37 | c | 39.25 | c | 30.37 | c | 25.34 | b | 40.74 | ||
1997 | 20.65 | 25.41 | a | 31.30 | a | 35.24 | a | 48.50 | a | 58.23 | 61.11 | c | 65.34 | b | 54.53 | 37.21 | b | 30.13 | 17.83 | a | 40.46 | |||||
1998 | 24.55 | 29.32 | 32.03 | b | 36.04 | d | 46.23 | a | 52.73 | 65.23 | 63.77 | 54.76 | a | 37.94 | 29.90 | a | 17.61 | 40.84 | ||||||||
1999 | 25.10 | a | 24.54 | b | 31.84 | 35.53 | 46.14 | b | 57.07 | a | 65.10 | a | 63.10 | 49.39 | b | 35.68 | 28.60 | 18.07 | a | 40.01 | ||||||
2000 | 23.87 | 28.68 | a | 31.71 | 41.93 | 49.86 | b | 58.97 | 66.03 | a | ----- | z | ----- | z | ----- | z | 22.11 | b | 19.28 | b | 38.05 | c | ||||
2001 | 1.37 | a | 24.52 | a | 49.70 | d | ----- | z | ----- | z | 49.74 | c | 65.34 | b | 64.52 | b | 50.79 | a | 38.75 | c | 30.25 | b | 18.17 | b | 39.32 | b |
2002 | 19.72 | b | 14.57 | ----- | z | 40.66 | a | ----- | z | 57.93 | a | 66.73 | a | 59.64 | c | 50.28 | a | 34.23 | i | 27.46 | d | 23.83 | g | 42.12 | d | |
2003 | 26.20 | f | 24.29 | k | 34.43 | h | 38.57 | g | 47.45 | b | 59.53 | 67.11 | d | 65.76 | b | 50.30 | 40.10 | a | 27.50 | b | 22.84 | f | 51.11 | e | ||
2004 | 18.08 | g | 21.34 | 36.63 | d | 42.64 | b | 51.55 | 59.67 | ----- | z | 61.74 | ----- | z | 42.79 | c | 28.59 | c | 23.96 | f | 43.12 | d | ||||
2005 | ----- | z | 29.15 | b | 34.23 | 39.79 | b | 49.77 | 55.27 | 68.00 | b | 62.07 | c | ----- | z | ----- | z | 30.00 | 18.87 | 43.02 | c | |||||
2006 | 22.07 | d | 21.05 | f | 32.91 | i | 42.43 | 50.71 | 61.87 | 70.42 | 67.48 | 49.03 | 40.32 | 26.60 | 17.68 | 44.86 | b | |||||||||
2007 | ----- | z | 23.07 | 30.65 | 38.53 | ----- | z | ----- | z | 65.97 | 65.66 | b | 52.00 | d | 35.33 | a | 25.82 | b | 16.07 | c | 39.23 | c | ||||
2008 | 17.65 | n | 23.69 | 28.90 | a | 32.67 | i | 44.69 | b | 56.80 | 65.77 | 63.20 | a | 50.60 | 37.10 | 31.60 | 18.61 | 42.10 | b | |||||||
2009 | 20.94 | 26.50 | 29.32 | 36.57 | 50.16 | 55.23 | 64.97 | 59.39 | 51.93 | 35.16 | 23.80 | 10.52 | 38.71 | |||||||||||||
2010 | 19.64 | i | 27.18 | 29.00 | a | 35.07 | 39.54 | e | 56.39 | b | 64.33 | p | 63.85 | e | 51.27 | 40.20 | a | 26.53 | 24.26 | 39.33 | b | |||||
2011 | 17.03 | 24.30 | a | 33.13 | 36.55 | a | 43.03 | 53.73 | 65.35 | 64.26 | 54.67 | i | 39.97 | a | 26.47 | 11.42 | 37.75 | a | ||||||||
2012 | 19.61 | 23.07 | 33.61 | 39.70 | 48.74 | 57.17 | 66.55 | 65.75 | c | ----- | z | 37.58 | 30.03 | 23.23 | 40.46 | a | ||||||||||
2013 | -0.55 | 12.18 | 32.27 | a | 36.67 | 47.33 | g | 61.30 | j | 68.15 | d | 66.29 | 55.03 | 36.07 | a | 28.25 | n | 5.94 | 34.67 | c | ||||||
2014 | 13.27 | e | 27.64 | 32.17 | b | 39.67 | f | 47.12 | g | 55.72 | a | 66.67 | a | 60.68 | 56.33 | 41.50 | a | 28.79 | k | 24.03 | 42.00 | c | ||||
2015 | 22.68 | 29.89 | 32.31 | b | 37.50 | 50.00 | 63.52 | a | 65.26 | 63.83 | a | 56.03 | 45.19 | 24.57 | 20.48 | 42.61 | ||||||||||
2016 | 14.00 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 17.08 | 23.68 | 31.65 | 37.82 | 47.38 | 56.57 | 64.67 | 62.37 | 51.27 | 38.63 | 27.73 | 18.55 | 39.53 | |||||||||||||
S.D. | 6.57 | 4.73 | 3.83 | 2.84 | 2.72 | 3.02 | 2.44 | 2.67 | 2.91 | 3.13 | 3.23 | 4.69 | 1.50 | |||||||||||||
SKEW | -0.71 | -1.25 | 1.89 | 0.29 | -0.44 | 0.12 | -0.89 | -0.54 | -0.24 | -0.19 | -0.91 | -0.42 | -0.56 | |||||||||||||
MAX | 26.97 | 30.29 | 49.70 | 43.28 | 52.42 | 63.52 | 70.42 | 67.48 | 56.33 | 47.41 | 33.90 | 27.71 | 42.61 | |||||||||||||
MIN | -0.55 | 6.79 | 25.23 | 31.73 | 39.54 | 49.74 | 56.10 | 54.13 | 44.60 | 29.07 | 17.20 | 5.94 | 35.75 | |||||||||||||
YRS | 47 | 52 | 51 | 47 | 48 | 51 | 54 | 54 | 49 | 49 | 53 | 52 | 33 |