YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.79 | p | 18.30 | a | 18.30 | k |
1961 | 13.16 | 23.56 | a | 31.32 | 34.77 | 44.81 | 54.57 | 56.33 | a | 61.15 | k | 43.93 | a | 36.08 | f | 26.20 | 13.29 | 34.19 | b | |||||||
1962 | 12.32 | 26.96 | 24.42 | 38.21 | a | 43.53 | a | 48.83 | a | 55.48 | b | 52.55 | 44.07 | 33.26 | 24.03 | 13.35 | 34.75 | |||||||||
1963 | 2.47 | a | 20.18 | 20.35 | 30.43 | 41.13 | 46.31 | a | 57.76 | b | 60.71 | 50.42 | d | 41.50 | a | 27.47 | 12.10 | 34.24 | ||||||||
1964 | 10.30 | a | 13.10 | 22.42 | 33.43 | 42.13 | 47.28 | a | 57.52 | 52.63 | d | 43.87 | 32.52 | 21.50 | 23.03 | 33.31 | ||||||||||
1965 | 24.27 | a | 22.14 | 28.56 | m | 38.17 | a | 43.71 | 50.27 | 59.19 | 57.29 | 42.23 | 36.87 | 30.14 | a | 24.41 | d | 38.97 | a | |||||||
1966 | 14.89 | d | 19.79 | 29.03 | 36.73 | 47.16 | 54.40 | 62.94 | 58.54 | c | 51.17 | 37.90 | 31.90 | 21.61 | c | 38.84 | ||||||||||
1967 | 14.29 | 23.00 | b | 35.10 | 37.30 | 44.06 | 52.55 | a | 63.00 | 60.71 | 52.80 | 39.35 | 28.70 | 16.06 | 38.91 | |||||||||||
1968 | 10.70 | a | 27.93 | 29.38 | g | 34.17 | a | 43.70 | a | 53.37 | 59.32 | 55.60 | a | 47.14 | a | 37.94 | 29.07 | a | 15.23 | 37.65 | a | |||||
1969 | 23.13 | 24.29 | 27.06 | 38.67 | 48.67 | a | 52.83 | 62.45 | 62.65 | 52.53 | 36.94 | 26.50 | 22.29 | 39.83 | ||||||||||||
1970 | 20.48 | 26.71 | 29.71 | 33.60 | 45.52 | 53.21 | b | 60.71 | 61.40 | a | 48.03 | a | 36.48 | 28.18 | b | 22.03 | 38.84 | |||||||||
1971 | 17.06 | 23.62 | b | 26.83 | a | 35.14 | a | 44.53 | a | 53.47 | k | 63.00 | q | 58.87 | 46.52 | a | 37.43 | a | 24.47 | 17.03 | 33.15 | b | ||||
1972 | 16.58 | 18.74 | b | 30.16 | 35.23 | 41.28 | b | 51.00 | e | 55.61 | 54.00 | 45.10 | 39.48 | 29.47 | 15.39 | 36.00 | ||||||||||
1973 | 9.37 | a | 22.61 | 30.97 | 32.37 | 42.94 | 48.89 | b | 56.19 | 56.52 | 44.77 | 34.13 | 27.80 | 17.97 | 35.38 | |||||||||||
1974 | 9.13 | 11.00 | a | 29.47 | a | 33.37 | 46.03 | b | 52.00 | a | 59.23 | 55.58 | 47.73 | 41.58 | 29.50 | 18.67 | a | 36.11 | ||||||||
1975 | 11.61 | 21.18 | 29.10 | 32.77 | 41.61 | 48.20 | 59.31 | b | 55.74 | 48.50 | 33.19 | 23.00 | b | 20.68 | 35.41 | |||||||||||
1976 | 9.16 | 25.83 | 25.42 | 36.45 | a | 45.73 | a | 50.77 | 61.68 | 56.90 | 49.00 | 33.55 | b | 23.27 | 10.77 | 35.71 | ||||||||||
1977 | 9.13 | 17.89 | 26.10 | a | 36.70 | 42.67 | a | 55.37 | 60.32 | 58.87 | 50.46 | b | 37.00 | 27.10 | 22.03 | 36.97 | ||||||||||
1978 | 24.13 | 25.36 | 34.29 | 39.77 | 44.16 | 51.67 | 56.47 | a | 55.57 | a | 46.87 | 36.29 | j | 32.03 | 11.74 | 38.37 | a | |||||||||
1979 | 12.81 | 17.00 | 29.61 | 34.60 | 44.58 | 50.80 | 58.26 | 56.45 | 49.45 | a | 38.97 | a | 23.30 | 17.48 | 36.11 | |||||||||||
1980 | 25.39 | 27.10 | 28.61 | 35.53 | 43.52 | 51.59 | c | 59.19 | 56.74 | 48.13 | 34.70 | a | 26.07 | b | 25.10 | a | 38.47 | |||||||||
1981 | 20.10 | 21.38 | b | 30.65 | 37.40 | e | 44.83 | a | 55.43 | b | 61.25 | c | 57.59 | b | 51.00 | f | 38.82 | c | 27.96 | c | 19.89 | c | 37.75 | a | ||
1982 | 11.23 | i | 19.96 | a | 29.59 | b | 32.56 | e | 41.19 | e | 48.93 | c | 56.23 | a | 59.62 | b | 50.00 | a | 33.52 | b | 26.18 | b | 21.19 | e | 38.09 | a |
1983 | 19.22 | d | 25.38 | b | 31.39 | c | 31.85 | d | 40.83 | b | 48.04 | b | 56.63 | d | 59.57 | a | 49.03 | 37.39 | 27.64 | b | 23.78 | d | 37.56 | |||
1984 | 12.54 | e | 18.11 | b | 26.30 | d | 30.50 | b | 44.10 | 48.96 | b | 60.29 | c | 58.86 | b | 49.77 | 34.77 | 25.27 | ----- | z | 37.22 | a | ||||
1985 | 16.36 | i | 12.29 | d | 28.93 | b | 36.82 | b | 48.44 | d | 57.67 | 59.41 | b | 57.30 | d | 47.31 | a | 37.56 | d | 27.03 | 19.42 | 39.29 | a | |||
1986 | 19.32 | c | 26.52 | a | 31.70 | a | 36.67 | c | 43.57 | c | 53.33 | 57.32 | 59.10 | 45.68 | b | 35.93 | a | 28.43 | 19.53 | a | 38.09 | |||||
1987 | 13.45 | 24.89 | a | 27.23 | 36.60 | 45.80 | a | 56.39 | b | 55.77 | 56.37 | a | 45.33 | 37.45 | 26.20 | 18.97 | a | 37.04 | ||||||||
1988 | 9.73 | a | 19.38 | 26.32 | 34.86 | b | 43.94 | 56.07 | 59.84 | 58.30 | a | 45.67 | 38.42 | 26.47 | 14.10 | 36.09 | ||||||||||
1989 | 5.68 | c | 19.93 | 30.84 | 39.23 | 46.58 | 53.10 | a | 60.29 | 56.90 | 48.57 | 36.00 | a | 24.33 | 12.52 | 36.16 | ||||||||||
1990 | 13.10 | 21.89 | 32.19 | 39.77 | 44.45 | 54.48 | a | 62.00 | 58.48 | 53.80 | 36.48 | 26.90 | 10.43 | a | 37.83 | |||||||||||
1991 | 7.97 | 18.21 | 30.10 | 33.07 | 44.77 | 53.20 | 59.29 | 59.61 | 49.59 | a | 36.94 | 27.30 | 18.68 | 36.56 | ||||||||||||
1992 | 10.00 | 25.21 | 32.71 | 41.43 | 48.68 | 54.20 | 57.74 | 58.87 | 49.20 | 39.77 | 24.50 | 14.84 | 38.10 | |||||||||||||
1993 | 25.55 | 27.39 | 30.58 | 34.27 | 46.39 | 51.93 | 57.10 | 56.71 | 45.97 | 36.45 | 22.40 | 16.32 | 37.59 | |||||||||||||
1994 | 15.16 | 19.86 | 30.23 | 37.80 | 46.84 | 56.43 | 61.06 | 62.10 | a | 48.56 | c | 38.69 | e | 24.96 | d | 21.29 | 38.58 | |||||||||
1995 | 22.52 | 26.89 | a | 31.93 | a | 33.70 | c | 41.33 | a | 49.38 | a | 55.66 | b | 59.55 | 50.15 | c | 33.32 | 25.57 | 18.83 | b | 37.40 | |||||
1996 | 15.74 | 24.93 | 27.58 | 33.70 | 46.94 | 54.83 | 58.68 | 58.97 | 45.90 | a | 36.03 | a | 26.80 | 19.50 | a | 37.47 | ||||||||||
1997 | 23.13 | 23.64 | 27.32 | 33.13 | 44.77 | 52.57 | 55.87 | 57.72 | b | 54.11 | b | 36.60 | a | 27.10 | 18.23 | 37.85 | ||||||||||
1998 | 21.68 | 25.54 | 27.47 | a | 34.93 | 43.00 | a | 49.14 | a | 61.66 | b | 57.77 | 52.10 | 36.23 | a | 27.77 | 13.69 | b | 37.58 | |||||||
1999 | 19.52 | 21.48 | a | 27.90 | 30.20 | 39.58 | 48.93 | 58.94 | 58.16 | 46.57 | 32.65 | 23.14 | a | 14.47 | a | 35.13 | ||||||||||
2000 | 17.55 | 25.74 | b | 30.24 | b | 36.68 | b | 45.94 | 53.69 | a | 59.23 | 59.52 | 48.23 | 38.61 | 21.63 | 17.06 | 37.84 | |||||||||
2001 | 12.96 | c | 22.30 | a | 30.10 | a | 36.90 | 44.73 | a | 51.86 | b | 60.71 | 57.35 | 47.63 | 35.74 | 27.57 | 15.06 | 36.91 | ||||||||
2002 | 12.81 | 12.82 | 22.80 | a | 37.03 | a | 41.44 | d | 53.63 | 59.53 | a | 54.10 | b | 50.38 | a | 36.68 | 27.62 | i | 17.90 | j | 38.12 | b | ||||
2003 | 22.37 | a | 24.68 | f | 30.37 | d | 37.35 | d | 46.86 | c | 55.23 | 64.03 | 63.64 | c | 48.85 | c | 41.24 | f | 29.81 | d | 19.43 | j | 44.28 | c | ||
2004 | 13.93 | d | 22.48 | f | 35.06 | 40.77 | 47.04 | e | 54.69 | a | 60.21 | c | 58.57 | a | 49.36 | b | 41.73 | a | 30.82 | b | 20.87 | 41.19 | a | |||
2005 | 28.87 | 29.15 | a | 30.77 | a | 35.52 | a | 45.84 | 51.97 | 60.58 | 58.80 | a | 47.97 | a | 38.65 | 28.27 | 16.81 | 39.43 | ||||||||
2006 | 18.26 | 19.04 | 28.90 | 36.30 | 45.26 | 53.63 | 62.50 | a | 57.61 | 43.47 | 35.19 | 17.64 | b | 15.19 | 36.08 | |||||||||||
2007 | 11.10 | 24.68 | 29.84 | 37.80 | 46.74 | 54.70 | 64.06 | 62.42 | 52.23 | 36.81 | 27.30 | 21.06 | 39.06 | |||||||||||||
2008 | 12.74 | 20.79 | 27.55 | 32.40 | 42.97 | 52.00 | 62.55 | 59.48 | 48.03 | 36.84 | 28.93 | 18.71 | 36.92 | |||||||||||||
2009 | 17.97 | 24.18 | 29.83 | a | 34.83 | 48.87 | 53.14 | a | 60.45 | 56.45 | 50.97 | 35.06 | 28.96 | b | 11.97 | 37.72 | ||||||||||
2010 | 14.29 | 21.68 | 28.39 | 35.67 | 42.81 | 55.23 | 61.32 | 58.65 | 48.07 | 40.32 | 25.17 | 26.35 | 38.16 | |||||||||||||
2011 | 9.35 | 18.96 | 30.58 | 36.10 | 42.84 | 52.43 | 61.55 | 60.90 | 50.87 | 36.94 | 26.30 | 16.58 | 36.95 | |||||||||||||
2012 | 16.23 | 23.45 | 29.39 | 37.40 | 46.00 | ----- | z | 63.19 | 60.68 | 50.00 | 36.29 | 26.70 | 19.32 | 37.15 | a | |||||||||||
2013 | 7.90 | 20.00 | 28.16 | 33.97 | 45.68 | 55.37 | 64.71 | 60.13 | 53.40 | 34.87 | 28.93 | 14.45 | 37.30 | |||||||||||||
2014 | 16.16 | 24.93 | 28.97 | 34.77 | 45.23 | 51.63 | 63.06 | 58.52 | 52.70 | 39.32 | 26.40 | 25.10 | 38.90 | |||||||||||||
2015 | 21.81 | 25.86 | 31.90 | 36.17 | 45.77 | 55.63 | 60.03 | 58.84 | 51.53 | 44.00 | 26.80 | 16.03 | 39.53 | |||||||||||||
2016 | 17.68 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 17.68 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 15.50 | 22.16 | 29.13 | 35.56 | 44.57 | 52.49 | 59.70 | 58.23 | 48.59 | 36.98 | 26.61 | 17.90 | 37.21 | |||||||||||||
S.D. | 5.72 | 4.13 | 2.86 | 2.53 | 2.17 | 2.64 | 2.48 | 2.32 | 2.82 | 2.47 | 2.69 | 3.93 | 1.49 | |||||||||||||
SKEW | 0.21 | -0.79 | -0.63 | 0.01 | -0.08 | -0.36 | -0.02 | -0.18 | -0.10 | 0.39 | -0.66 | 0.10 | -0.44 | |||||||||||||
MAX | 28.87 | 29.15 | 35.10 | 41.43 | 48.87 | 57.67 | 64.71 | 63.64 | 54.11 | 44.00 | 32.03 | 26.35 | 39.83 | |||||||||||||
MIN | 2.47 | 11.00 | 20.35 | 30.20 | 39.58 | 46.31 | 55.48 | 52.55 | 42.23 | 32.52 | 17.64 | 10.43 | 33.31 | |||||||||||||
YRS | 54 | 53 | 53 | 55 | 55 | 53 | 54 | 54 | 54 | 52 | 54 | 53 | 42 |