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 | 22.00 | 15.00 | -14.00 | ----- | z | |||
1963 | -25.00 | -20.00 | 1.00 | a | 21.00 | 29.00 | 41.00 | 49.00 | 42.00 | 34.00 | 23.00 | 7.00 | -28.00 | -28.00 | a | |||||||||||
1964 | -18.00 | -15.00 | -10.00 | 19.00 | 38.00 | 31.00 | 50.00 | 33.00 | 32.00 | 18.00 | -18.00 | -20.00 | -20.00 | |||||||||||||
1965 | -30.00 | -28.00 | -13.00 | 29.00 | a | 32.00 | 42.00 | 46.00 | 37.00 | 22.00 | 23.00 | -6.00 | -11.00 | -30.00 | a | |||||||||||
1966 | -31.00 | -20.00 | -11.00 | 12.00 | 24.00 | 41.00 | a | 53.00 | 47.00 | 35.00 | 20.00 | -9.00 | -15.00 | -31.00 | a | |||||||||||
1967 | -30.00 | -29.00 | -18.00 | 15.00 | 18.00 | 44.00 | 39.00 | 40.00 | 28.00 | 10.00 | -4.00 | -31.00 | -31.00 | |||||||||||||
1968 | -32.00 | -20.00 | a | -2.00 | 9.00 | 25.00 | 35.00 | 44.00 | 37.00 | 35.00 | 23.00 | 12.00 | -26.00 | -32.00 | a | |||||||||||
1969 | -23.00 | -22.00 | -13.00 | 16.00 | 34.00 | 35.00 | 40.00 | 43.00 | 35.00 | 16.00 | 2.00 | -11.00 | -23.00 | |||||||||||||
1970 | -34.00 | -26.00 | -0.00 | 10.00 | 25.00 | a | 43.00 | 45.00 | 43.00 | 32.00 | 18.00 | -5.00 | -20.00 | -34.00 | a | |||||||||||
1971 | -29.00 | -28.00 | -5.00 | 10.00 | 27.00 | 40.00 | 40.00 | 42.00 | 28.00 | 21.00 | 5.00 | -17.00 | -29.00 | |||||||||||||
1972 | -36.00 | -30.00 | -24.00 | 14.00 | 31.00 | 37.00 | 43.00 | 40.00 | 31.00 | 7.00 | -0.00 | -31.00 | -36.00 | |||||||||||||
1973 | -28.00 | -24.00 | 14.00 | 12.00 | 27.00 | 42.00 | 43.00 | 46.00 | 27.00 | 24.00 | 1.00 | -27.00 | a | -28.00 | a | |||||||||||
1974 | -33.00 | -30.00 | -18.00 | 12.00 | 23.00 | 40.00 | 46.00 | 38.00 | 17.00 | 16.00 | 4.00 | -2.00 | -33.00 | |||||||||||||
1975 | -21.00 | -28.00 | -16.00 | -3.00 | 24.00 | p | 52.00 | l | 52.00 | 46.00 | 34.00 | 25.00 | -0.00 | -16.00 | ----- | z | ||||||||||
1976 | -25.00 | -15.00 | -5.00 | 25.00 | 24.00 | 40.00 | 44.00 | 40.00 | 27.00 | 7.00 | -16.00 | -31.00 | -31.00 | |||||||||||||
1977 | -38.00 | -20.00 | -7.00 | 12.00 | 32.00 | 45.00 | 47.00 | 41.00 | 38.00 | 23.00 | -21.00 | -26.00 | -38.00 | |||||||||||||
1978 | -26.00 | -25.00 | -19.00 | 20.00 | 30.00 | 36.00 | 47.00 | 43.00 | 34.00 | 18.00 | ----- | z | -17.00 | ----- | z | |||||||||||
1979 | -25.00 | -31.00 | -12.00 | -0.00 | 29.00 | 33.00 | 50.00 | 42.00 | 33.00 | 11.00 | a | -5.00 | -14.00 | -31.00 | a | |||||||||||
1980 | ----- | z | -17.00 | ----- | z | 23.00 | ----- | z | 40.00 | 47.00 | 45.00 | 30.00 | 19.00 | 10.00 | -18.00 | ----- | z | |||||||||
1981 | -19.00 | a | -27.00 | 2.00 | 19.00 | 25.00 | 46.00 | 45.00 | 45.00 | 32.00 | 21.00 | 9.00 | -18.00 | -27.00 | a | |||||||||||
1982 | -30.00 | -31.00 | -10.00 | 9.00 | 27.00 | 36.00 | 50.00 | 41.00 | 31.00 | 22.00 | -5.00 | a | -0.00 | d | -31.00 | e | ||||||||||
1983 | -28.00 | j | -14.00 | j | 6.00 | i | 22.00 | i | 23.00 | j | 38.00 | j | 47.00 | k | 42.00 | h | 29.00 | j | 24.00 | m | 20.00 | p | -31.00 | o | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.00 | 45.00 | a | 23.00 | a | 13.00 | d | 2.00 | -14.00 | b | ----- | z | ||
1985 | -29.00 | a | -21.00 | 2.00 | a | 20.00 | 38.00 | 38.00 | 50.00 | 40.00 | 27.00 | 21.00 | f | -18.00 | c | -24.00 | b | -29.00 | m | |||||||
1986 | -37.00 | c | -23.00 | e | -11.00 | 21.00 | a | 27.00 | 48.00 | 54.00 | a | 41.00 | a | 35.00 | 19.00 | -6.00 | a | -12.00 | a | -37.00 | m | |||||
1987 | -25.00 | b | 9.00 | 1.00 | a | 19.00 | b | 37.00 | b | 41.00 | a | 50.00 | e | 40.00 | b | 37.00 | a | 18.00 | a | 10.00 | -5.00 | b | -25.00 | s | ||
1988 | -24.00 | -24.00 | a | 3.00 | 16.00 | 31.00 | 43.00 | a | 52.00 | d | 40.00 | 40.00 | f | 14.00 | l | 4.00 | k | -10.00 | k | ----- | 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 | ----- | 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 | 20.00 | g | -2.00 | b | ----- | z |
2002 | -12.00 | e | -8.00 | e | -12.00 | g | 22.00 | d | 26.00 | r | 49.00 | j | 57.00 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | -27.50 | -22.12 | -7.43 | 15.28 | 28.77 | 39.87 | 46.92 | 41.48 | 30.71 | 18.21 | -1.50 | -17.31 | -30.13 | |||||||||||||
S.D. | 6.28 | 8.67 | 9.07 | 7.32 | 5.11 | 4.24 | 4.11 | 3.25 | 5.06 | 5.23 | 9.97 | 9.05 | 4.47 | |||||||||||||
SKEW | 0.43 | 1.98 | 0.30 | -0.61 | 0.19 | -0.21 | -0.21 | -0.44 | -0.96 | -0.87 | -0.35 | 0.19 | 0.52 | |||||||||||||
MAX | -12.00 | 9.00 | 14.00 | 29.00 | 38.00 | 48.00 | 54.00 | 47.00 | 38.00 | 25.00 | 15.00 | -0.00 | -20.00 | |||||||||||||
MIN | -38.00 | -31.00 | -24.00 | -3.00 | 18.00 | 31.00 | 39.00 | 33.00 | 17.00 | 7.00 | -21.00 | -31.00 | -38.00 | |||||||||||||
YRS | 24 | 25 | 23 | 25 | 22 | 23 | 25 | 25 | 24 | 24 | 24 | 26 | 16 |