YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 50.81 | 36.55 | 19.24 | 35.53 | i | |||
1963 | 3.26 | 13.89 | 33.48 | a | 47.13 | 59.78 | v | 69.18 | b | 72.48 | a | 69.15 | 62.45 | 57.94 | 35.05 | 8.18 | 42.93 | a | ||||||||
1964 | 17.02 | 20.66 | a | 20.55 | a | 44.79 | a | 61.23 | 66.98 | a | 73.53 | a | 66.15 | 58.29 | b | 47.88 | b | 32.12 | a | 9.12 | b | 43.19 | ||||
1965 | 3.27 | c | 8.31 | a | 15.82 | a | 42.61 | c | 57.42 | a | 65.64 | b | 69.59 | b | 67.62 | a | 50.10 | 49.47 | 29.91 | b | 22.57 | a | 40.19 | |||
1966 | -1.14 | b | 11.52 | 32.23 | 37.68 | 53.07 | a | 65.95 | b | 74.95 | 66.88 | a | 59.98 | 46.92 | 25.35 | 14.05 | 40.62 | |||||||||
1967 | 11.08 | 6.45 | 28.68 | 42.70 | 51.13 | a | 64.50 | 68.42 | 66.48 | 59.80 | 44.65 | 29.40 | 17.37 | 40.89 | ||||||||||||
1968 | 9.26 | 11.12 | a | 36.19 | 45.37 | 52.35 | 65.50 | 69.52 | 69.89 | 60.17 | 48.74 | 32.52 | 12.68 | 42.78 | ||||||||||||
1969 | 2.53 | 15.38 | 18.40 | 46.30 | 58.32 | 60.00 | 70.05 | 72.16 | 61.28 | 43.21 | 31.38 | 16.87 | 41.32 | |||||||||||||
1970 | 1.71 | 12.52 | 21.82 | 41.60 | 56.33 | a | 68.95 | 73.26 | 70.58 | 60.68 | 46.52 | 27.40 | 12.26 | 41.14 | ||||||||||||
1971 | 1.81 | 12.93 | 26.61 | 45.02 | 54.53 | 68.57 | 65.68 | 67.82 | 59.07 | 47.82 | a | 28.65 | 12.11 | 40.88 | ||||||||||||
1972 | 1.73 | 5.12 | 23.71 | 40.22 | 59.00 | 65.72 | 67.56 | 68.39 | 56.34 | a | 42.81 | 27.37 | 5.61 | 38.63 | ||||||||||||
1973 | 11.85 | 17.21 | 36.40 | 42.27 | 54.71 | 65.52 | a | 68.95 | 69.82 | 56.38 | 51.44 | 29.15 | 11.02 | a | 42.89 | |||||||||||
1974 | 6.02 | a | 12.48 | 24.24 | 44.18 | 52.60 | 65.28 | 73.89 | 64.53 | 54.42 | 48.19 | 30.58 | 21.39 | 41.48 | ||||||||||||
1975 | 10.82 | 10.73 | 18.97 | 35.83 | 52.17 | p | 71.03 | l | 74.65 | 70.35 | 57.55 | 51.08 | 32.95 | 16.48 | 37.94 | b | ||||||||||
1976 | 9.16 | 24.33 | 28.58 | 51.05 | 57.39 | 68.73 | 72.27 | 72.00 | 60.17 | 42.60 | 24.90 | 9.31 | 43.37 | |||||||||||||
1977 | -4.15 | 17.79 | 33.23 | 50.67 | 65.29 | 65.98 | 72.32 | 63.32 | 57.88 | 46.15 | 25.93 | 8.26 | 41.89 | |||||||||||||
1978 | -0.76 | 5.96 | 24.34 | 41.80 | 58.05 | 65.03 | 69.92 | 69.90 | 63.13 | 48.23 | ----- | z | 10.92 | 41.50 | a | |||||||||||
1979 | -1.52 | 3.54 | 22.68 | 38.08 | 51.18 | 64.35 | 69.94 | 66.44 | 61.43 | 43.97 | a | 28.10 | 23.69 | 39.32 | ||||||||||||
1980 | ----- | z | 12.28 | ----- | z | 48.85 | ----- | z | 65.55 | 71.00 | 67.02 | 58.77 | 43.73 | 35.57 | 17.18 | 46.66 | c | |||||||||
1981 | 14.88 | a | 21.11 | 35.92 | 48.27 | 56.85 | 64.17 | 70.21 | 68.44 | 59.67 | 45.42 | 37.10 | 12.26 | 44.52 | ||||||||||||
1982 | -3.71 | 12.20 | 25.13 | 41.52 | 60.27 | c | 60.85 | 71.55 | a | 69.16 | b | 57.45 | 46.87 | a | 27.40 | a | 24.50 | d | 41.10 | |||||||
1983 | 15.00 | j | 22.89 | j | 29.86 | i | 41.62 | i | 53.12 | j | 62.83 | j | 74.25 | k | 72.67 | h | 57.67 | j | 43.78 | m | 36.29 | p | -2.16 | o | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.87 | 71.87 | a | 53.40 | a | 48.06 | d | 29.82 | 11.75 | c | 47.63 | f | ||
1985 | 5.05 | b | 9.46 | a | 34.08 | a | 47.82 | b | 61.29 | 61.52 | 69.42 | 64.53 | 56.25 | 46.16 | f | 18.57 | c | 4.35 | d | 39.30 | a | |||||
1986 | 12.90 | f | 12.02 | f | 29.05 | b | 43.84 | b | 56.72 | a | 68.48 | a | 71.62 | a | 64.88 | a | 56.62 | 46.40 | 23.74 | a | 22.78 | b | 48.41 | b | ||
1987 | 17.66 | b | 28.30 | 32.05 | a | 51.12 | b | 61.47 | b | 68.38 | a | 71.06 | e | 66.98 | b | 58.91 | a | 41.95 | a | 34.92 | 20.81 | b | 46.13 | |||
1988 | 5.79 | 6.75 | a | 29.65 | 43.87 | 63.08 | 73.48 | a | 73.89 | d | 70.52 | 57.87 | g | 41.97 | l | 29.97 | m | 18.70 | k | 45.88 | d | |||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | 42.93 | g | 22.29 | b | 22.29 | k |
2002 | 16.13 | e | 26.04 | e | 19.92 | g | 41.98 | d | 46.38 | r | 70.92 | j | 74.98 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.05 | i |
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 |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 5.99 | 13.59 | 27.47 | 44.18 | 57.25 | 66.01 | 71.06 | 68.19 | 58.34 | 47.12 | 29.77 | 14.89 | 41.79 | |||||||||||||
S.D. | 6.66 | 6.68 | 6.13 | 4.10 | 3.97 | 2.98 | 2.28 | 2.47 | 2.97 | 3.56 | 4.45 | 5.93 | 1.87 | |||||||||||||
SKEW | 0.29 | 0.63 | -0.16 | -0.02 | 0.14 | 0.14 | -0.22 | -0.16 | -0.85 | 1.01 | -0.34 | 0.07 | 0.57 | |||||||||||||
MAX | 17.66 | 28.30 | 36.40 | 51.12 | 65.29 | 73.48 | 74.95 | 72.16 | 63.13 | 57.94 | 37.10 | 24.50 | 46.13 | |||||||||||||
MIN | -4.15 | 3.54 | 15.82 | 35.83 | 51.13 | 60.00 | 65.68 | 63.32 | 50.10 | 41.95 | 18.57 | 4.35 | 38.63 | |||||||||||||
YRS | 23 | 24 | 23 | 25 | 21 | 23 | 25 | 25 | 24 | 24 | 24 | 26 | 17 |