YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.40 | p | 22.77 | 15.19 | 18.98 | j | ||
1952 | 20.84 | 19.41 | 19.81 | 33.20 | 41.52 | 52.43 | 54.48 | 52.58 | 45.10 | 34.45 | 18.70 | 19.55 | 34.34 | |||||||||||||
1953 | 24.61 | 18.14 | 26.90 | 29.00 | 38.84 | 52.60 | 57.71 | 54.55 | 47.90 | 37.23 | 29.00 | 17.16 | 36.14 | |||||||||||||
1954 | 22.17 | a | 27.43 | 21.00 | 35.23 | 41.71 | 50.17 | 59.58 | 55.10 | 48.73 | 35.35 | 27.20 | 18.81 | 36.87 | ||||||||||||
1955 | 13.45 | 13.25 | 21.68 | 32.83 | 43.26 | 47.87 | 56.48 | 56.71 | 46.57 | 34.90 | 21.43 | 22.00 | 34.20 | |||||||||||||
1956 | 19.35 | 12.24 | 24.19 | 30.00 | 43.90 | 53.90 | 54.84 | 52.26 | 44.57 | 37.19 | 21.00 | 21.16 | 34.55 | |||||||||||||
1957 | 12.55 | 24.82 | 24.00 | 28.47 | 39.84 | 48.10 | 55.94 | 54.94 | 42.87 | 37.61 | 22.93 | 23.52 | 34.63 | |||||||||||||
1958 | 15.94 | 22.82 | 19.55 | 29.43 | 43.84 | 49.83 | 52.35 | 53.77 | 46.23 | 35.61 | 23.47 | 20.26 | 34.43 | |||||||||||||
1959 | 13.74 | 16.79 | 21.00 | 30.17 | 41.58 | 52.27 | 53.77 | 54.42 | 42.20 | 31.39 | 20.03 | 18.32 | 32.97 | |||||||||||||
1960 | 10.35 | 8.69 | 23.16 | 33.83 | 39.97 | 50.46 | b | 54.74 | 54.26 | 46.43 | 35.68 | 23.60 | 15.13 | 33.03 | ||||||||||||
1961 | 14.77 | 20.68 | 25.58 | 29.93 | 41.13 | 48.30 | 52.94 | 53.45 | 40.37 | 34.48 | 22.80 | 13.48 | 33.16 | |||||||||||||
1962 | 6.10 | 19.07 | 21.03 | 35.03 | 41.32 | 48.10 | 52.81 | 51.55 | 44.27 | 34.90 | 25.83 | 15.81 | 32.99 | |||||||||||||
1963 | 3.52 | 21.86 | 22.00 | 31.60 | 40.65 | e | 48.41 | a | 56.97 | 55.03 | 49.05 | k | 39.52 | 25.20 | 12.04 | d | 32.44 | a | ||||||||
1964 | 14.80 | a | 11.57 | a | 17.88 | e | 29.30 | 41.20 | a | 48.37 | 56.73 | a | 52.00 | 43.59 | a | 33.39 | 24.83 | 17.93 | b | 32.63 | ||||||
1965 | 22.14 | b | 12.75 | 12.83 | b | 32.50 | 38.90 | a | 47.50 | b | 53.94 | 52.10 | 39.36 | e | 36.00 | 28.97 | a | 21.03 | b | 33.17 | ||||||
1966 | 11.77 | 12.00 | 24.43 | a | 27.71 | b | 40.53 | a | 47.62 | a | 58.10 | 52.43 | a | 46.96 | b | 32.82 | i | 24.59 | a | 13.96 | c | 32.74 | a | |||
1967 | 17.03 | a | 17.81 | b | 27.38 | b | 32.33 | f | 37.52 | f | 45.93 | 51.74 | d | 47.26 | d | 44.31 | q | 36.54 | g | 22.87 | g | 13.44 | m | 34.53 | f | |
1968 | 13.15 | e | 20.33 | e | 23.88 | f | 26.83 | 37.40 | a | 48.13 | 53.97 | 51.10 | 42.07 | 34.94 | 22.50 | 13.70 | a | 33.10 | a | |||||||
1969 | 18.94 | 19.29 | 15.61 | 35.73 | 43.33 | a | 46.03 | 56.77 | a | 55.50 | a | 46.47 | 26.32 | 21.90 | 18.33 | a | 33.69 | |||||||||
1970 | 13.65 | 20.18 | 18.90 | 27.17 | 39.13 | 46.93 | 54.13 | 55.52 | 42.10 | a | 29.29 | 23.23 | 18.06 | 32.36 | ||||||||||||
1971 | 17.65 | 15.96 | 22.23 | 30.80 | 37.97 | a | 48.33 | 53.26 | 53.00 | 40.13 | 32.39 | 25.07 | 18.42 | 32.93 | ||||||||||||
1972 | 13.97 | 20.52 | 27.29 | 33.00 | 39.81 | 50.73 | 53.29 | 52.94 | 46.00 | 35.32 | 17.67 | ----- | z | 35.50 | a | |||||||||||
1973 | 9.94 | 17.39 | 25.52 | 27.67 | 39.13 | 46.90 | 52.83 | a | 53.74 | 42.57 | 35.42 | 24.73 | 16.82 | c | 32.72 | |||||||||||
1974 | 6.55 | 17.11 | 25.71 | 29.90 | 40.84 | 48.93 | 54.32 | 49.87 | 40.30 | 35.48 | 23.82 | b | 16.32 | 32.43 | ||||||||||||
1975 | 14.90 | 14.68 | 21.32 | 27.00 | 36.74 | 46.47 | 54.06 | 52.13 | a | 41.20 | 35.06 | 21.47 | 20.20 | a | 32.10 | |||||||||||
1976 | 14.58 | 21.90 | 21.74 | 32.03 | 39.16 | 46.47 | 54.90 | 50.45 | 46.03 | 29.48 | 20.53 | 16.38 | b | 32.81 | ||||||||||||
1977 | 10.32 | 19.29 | 25.81 | 34.03 | a | 42.06 | 52.57 | 55.61 | 53.55 | 46.34 | a | 33.48 | ----- | z | ----- | z | 37.31 | b | ||||||||
1978 | 11.48 | ----- | z | 24.97 | 32.57 | 37.55 | 50.10 | 55.23 | 51.03 | 45.31 | a | ----- | z | ----- | z | ----- | z | 38.53 | d | |||||||
1979 | ----- | z | ----- | z | 25.60 | a | 32.10 | 39.74 | 47.79 | a | 54.13 | 52.06 | 46.53 | 35.32 | 16.70 | 18.30 | a | 36.83 | b | |||||||
1980 | 12.03 | 19.86 | ----- | z | 29.20 | 39.87 | a | 50.76 | a | 56.61 | 53.45 | 46.20 | 32.39 | 24.10 | 25.16 | 35.42 | a | |||||||||
1981 | 18.57 | a | 17.69 | b | 25.00 | 36.47 | 41.00 | 51.47 | 56.68 | 53.90 | 48.73 | 35.71 | 26.57 | 17.53 | a | 35.78 | ||||||||||
1982 | 13.64 | c | 14.92 | b | 25.03 | b | 29.00 | a | 38.46 | c | 46.97 | 55.45 | 56.45 | b | 47.80 | 32.10 | b | ----- | z | ----- | z | 35.98 | b | |||
1983 | 18.67 | j | ----- | z | ----- | z | ----- | z | 34.58 | l | 44.64 | h | 54.86 | j | 54.78 | h | 44.05 | i | 35.10 | k | 24.67 | l | 4.15 | k | ----- | z |
1984 | 12.10 | j | 18.47 | j | 23.43 | c | 28.83 | 44.06 | 51.03 | 57.45 | 56.00 | 46.59 | c | 33.55 | 26.24 | a | 21.07 | b | 38.83 | b | ||||||
1985 | 15.23 | a | 14.96 | 27.13 | a | 35.10 | 43.16 | 50.63 | c | 55.88 | e | 52.53 | a | 42.88 | e | 33.63 | d | 18.96 | c | 14.39 | c | 33.71 | ||||
1986 | 22.69 | e | 20.83 | d | 30.91 | h | 33.30 | c | 39.62 | e | 51.96 | b | 54.00 | e | 54.58 | e | 39.82 | h | 33.70 | d | 24.68 | b | 14.71 | c | 35.01 | b |
1987 | 15.78 | d | 21.36 | c | 19.90 | u | 27.29 | i | 37.24 | n | 49.69 | a | 52.43 | a | 52.23 | e | 43.21 | a | 33.10 | a | 23.33 | 16.20 | a | 34.15 | c | |
1988 | 9.30 | a | 18.18 | a | 21.10 | 29.64 | b | 39.84 | 51.00 | 53.48 | d | 54.07 | a | 42.71 | b | 35.08 | e | 23.97 | 13.10 | 32.62 | ||||||
1989 | 15.63 | a | 10.70 | a | 22.87 | 33.48 | e | 38.90 | b | 47.17 | a | 55.53 | a | 52.00 | 44.00 | b | 32.20 | a | 24.27 | 11.03 | 32.32 | |||||
1990 | 19.84 | 17.32 | 23.23 | 32.93 | 36.27 | a | 50.90 | a | 53.04 | c | 52.00 | 48.27 | 33.18 | c | 25.47 | 8.90 | a | 33.44 | ||||||||
1991 | 11.29 | c | 20.57 | 24.90 | 31.66 | a | 43.14 | c | 50.86 | b | 54.89 | c | 52.93 | a | 44.93 | a | 30.59 | b | 21.61 | b | 17.74 | 33.76 | ||||
1992 | 14.77 | 23.11 | a | 27.48 | b | 35.00 | 42.97 | 48.13 | 53.57 | a | 51.10 | 43.67 | 33.57 | a | 20.57 | b | 13.06 | 33.92 | ||||||||
1993 | 11.25 | c | 14.12 | b | 25.16 | 31.73 | 40.03 | a | 47.78 | c | 53.41 | d | 51.61 | 41.93 | b | 31.97 | 18.83 | 18.03 | 32.15 | |||||||
1994 | 16.10 | a | 16.11 | a | 24.23 | 32.41 | c | 43.47 | a | 52.96 | b | 54.37 | a | 55.28 | b | 46.86 | b | 35.28 | b | 23.70 | c | 18.89 | c | 34.97 | ||
1995 | 17.42 | 21.00 | 25.00 | c | 29.43 | 38.10 | 46.15 | c | 51.39 | 54.73 | a | 43.48 | a | 30.63 | a | 24.93 | b | 17.73 | a | 33.33 | ||||||
1996 | 11.93 | a | 15.89 | b | 17.55 | 29.60 | 40.13 | a | 47.46 | b | 54.54 | c | 52.16 | 42.57 | b | 32.65 | 21.14 | b | 17.84 | 31.96 | ||||||
1997 | 12.87 | 16.96 | 22.97 | 25.07 | b | 38.55 | 49.97 | 55.00 | d | 52.95 | k | 49.76 | a | 36.10 | 25.68 | h | 16.03 | 32.33 | b | |||||||
1998 | 20.33 | a | 23.19 | a | 17.54 | r | 32.14 | a | 42.83 | b | 46.19 | c | 57.71 | 55.42 | 50.00 | 36.23 | 29.66 | a | 15.23 | a | 37.17 | a | ||||
1999 | 21.24 | b | 23.73 | b | 25.68 | c | 27.79 | a | 40.28 | b | 48.77 | 57.97 | 55.79 | b | 44.00 | 34.48 | 26.30 | j | 20.59 | d | 36.39 | a | ||||
2000 | 22.16 | f | 25.77 | g | 28.00 | b | 34.00 | c | 44.48 | b | 50.69 | d | 57.96 | f | 57.48 | d | 46.33 | 36.64 | c | 18.32 | b | 14.40 | a | 36.71 | c | |
2001 | 18.73 | a | 17.69 | b | 26.77 | e | 34.70 | g | 41.38 | e | 50.88 | e | 59.41 | d | 55.62 | e | 47.79 | a | 34.83 | a | 26.32 | b | 19.10 | 36.23 | a | |
2002 | 16.61 | c | 16.48 | c | 18.89 | c | 34.33 | i | 41.19 | d | 54.24 | e | 58.77 | 54.61 | c | 47.04 | e | 31.40 | a | 23.19 | c | 19.44 | d | 34.71 | a | |
2003 | 21.17 | b | 15.44 | c | 26.50 | k | 36.11 | b | 43.11 | d | 49.04 | d | 57.66 | b | 55.88 | g | 42.83 | g | 36.05 | i | 20.88 | f | 18.57 | h | 37.09 | f |
2004 | 19.33 | y | ----- | 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 |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 15.10 | 18.00 | 23.15 | 31.28 | 40.65 | 49.33 | 55.10 | 53.41 | 44.87 | 34.03 | 23.24 | 17.22 | 33.55 | |||||||||||||
S.D. | 4.56 | 3.94 | 3.35 | 2.80 | 2.06 | 2.19 | 2.00 | 1.97 | 2.67 | 2.42 | 2.97 | 3.24 | 1.22 | |||||||||||||
SKEW | -0.14 | -0.11 | -0.91 | -0.05 | 0.01 | 0.33 | 0.40 | -0.41 | -0.13 | -0.71 | -0.07 | -0.09 | 1.01 | |||||||||||||
MAX | 24.61 | 27.43 | 28.00 | 36.47 | 44.48 | 54.24 | 59.58 | 57.48 | 50.00 | 39.52 | 29.66 | 25.16 | 36.87 | |||||||||||||
MIN | 3.52 | 8.69 | 12.83 | 25.07 | 36.27 | 45.93 | 51.39 | 47.26 | 39.36 | 26.32 | 16.70 | 8.90 | 31.96 | |||||||||||||
YRS | 48 | 47 | 45 | 47 | 49 | 51 | 50 | 49 | 47 | 47 | 45 | 46 | 31 |