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 | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | 4.43 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 4.43 | k |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.80 | f | 39.29 | w | 37.47 | p | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.77 | a | 20.40 | ----- | z | 28.08 | j | |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 20.90 | ----- | z | 20.90 | k | |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 20.37 | ----- | z | 20.37 | k | |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.97 | a | ----- | z | 14.83 | a | 0.19 | 21.66 | i | |
1979 | -13.71 | -10.21 | 14.10 | 29.87 | 37.87 | 52.50 | 59.61 | c | 54.07 | b | 44.56 | c | ----- | z | ----- | z | ----- | z | 29.85 | c | ||||||
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.43 | 54.23 | 52.82 | c | 45.21 | a | 30.17 | a | 23.87 | 4.52 | b | 37.61 | e | |||
1993 | -4.17 | b | 2.04 | 18.97 | b | 31.50 | 43.18 | c | 51.03 | 57.97 | 57.16 | 41.34 | a | 30.00 | b | 16.59 | c | 8.50 | a | 29.51 | ||||||
1994 | -9.58 | -6.65 | b | 22.52 | 30.77 | 45.70 | a | 54.03 | a | 55.40 | a | 53.81 | 48.54 | b | 38.32 | 15.83 | a | 7.37 | a | 29.67 | ||||||
1995 | -0.59 | d | 5.52 | a | 19.93 | a | 28.67 | 41.30 | a | 56.97 | 56.97 | b | 61.00 | c | 44.22 | c | 33.30 | a | 14.80 | 8.70 | a | 30.90 | ||||
1996 | -6.18 | c | 5.62 | 10.06 | 26.34 | a | 41.42 | 53.48 | a | 53.74 | d | 55.11 | c | 46.34 | a | 30.85 | d | 8.00 | a | -2.63 | a | 26.85 | ||||
1997 | -7.07 | a | 1.50 | b | 14.33 | a | 26.80 | 38.45 | b | 54.08 | d | 60.50 | a | 57.07 | a | 47.36 | b | 34.70 | d | 16.67 | 16.17 | a | 30.05 | |||
1998 | 6.66 | b | 22.12 | b | 15.76 | b | 33.73 | d | 48.06 | 51.36 | b | 60.24 | b | 58.61 | c | 50.19 | c | 36.77 | i | 26.29 | b | 11.94 | 34.99 | a | ||
1999 | 0.96 | c | 16.81 | b | 22.07 | b | 34.34 | a | 46.34 | b | 56.03 | a | 60.50 | c | 55.63 | a | 46.48 | c | 31.47 | a | 26.43 | b | 12.15 | e | 34.10 | |
2000 | 2.85 | d | 14.20 | d | 25.16 | 29.57 | b | 45.07 | b | 53.00 | a | 59.75 | c | 57.68 | c | 44.48 | c | 37.83 | b | 13.12 | d | -5.54 | e | 31.43 | ||
2001 | 5.26 | d | -7.30 | a | 10.96 | c | 33.38 | a | 47.61 | 56.13 | 62.61 | c | 58.14 | b | 48.27 | 32.24 | b | 26.21 | b | 11.90 | b | 32.12 | ||||
2002 | 8.19 | d | 14.25 | 9.90 | a | 29.87 | 38.52 | 56.86 | b | 64.65 | 57.68 | 50.14 | a | 28.70 | a | 19.24 | a | 10.84 | 32.40 | |||||||
2003 | 3.10 | b | -1.00 | a | 14.32 | 32.97 | 44.16 | 55.13 | 59.48 | 59.23 | 44.72 | a | 34.29 | 14.93 | 13.38 | b | 31.23 | |||||||||
2004 | -0.81 | e | 7.11 | b | 25.58 | 30.11 | b | 42.45 | 49.67 | 55.35 | 51.68 | 50.50 | 36.04 | c | 23.45 | a | 13.00 | a | 32.01 | |||||||
2005 | 0.30 | a | 11.38 | b | 17.57 | a | 32.90 | 42.35 | 59.43 | 61.90 | a | 56.27 | a | 51.17 | 34.52 | b | 23.00 | 7.77 | 33.21 | |||||||
2006 | 19.60 | a | 9.32 | 23.90 | 36.83 | 45.10 | a | 55.47 | 62.39 | 59.42 | 44.40 | 29.58 | 17.67 | 11.76 | b | 34.62 | ||||||||||
2007 | 1.71 | -3.56 | a | 23.77 | 28.33 | 49.48 | 57.62 | a | 62.13 | 57.68 | 48.00 | 36.84 | 19.17 | 2.29 | 31.96 | |||||||||||
2008 | -3.29 | -2.00 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -3.29 | k | |
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 |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.43 | 5.07 | 18.06 | 31.00 | 43.57 | 54.43 | 59.26 | 56.65 | 46.99 | 33.41 | 19.09 | 7.78 | 31.43 | |||||||||||||
S.D. | 7.51 | 9.37 | 5.44 | 2.87 | 3.52 | 2.61 | 3.19 | 2.51 | 2.78 | 3.08 | 4.91 | 6.09 | 2.01 | |||||||||||||
SKEW | 0.47 | 0.04 | -0.11 | 0.21 | -0.11 | 0.02 | -0.31 | -0.36 | -0.15 | 0.04 | -0.22 | -0.83 | -0.52 | |||||||||||||
MAX | 19.60 | 22.12 | 25.58 | 36.83 | 49.48 | 59.43 | 64.65 | 61.00 | 51.17 | 38.32 | 26.43 | 16.17 | 34.62 | |||||||||||||
MIN | -13.71 | -10.21 | 9.90 | 26.34 | 37.87 | 49.67 | 53.74 | 51.68 | 41.34 | 28.70 | 8.00 | -5.54 | 26.85 | |||||||||||||
YRS | 18 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 18 | 16 | 20 | 17 | 14 |