YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 28.00 | a | 39.00 | 46.00 | 45.00 | 30.00 | 19.00 | 12.00 | -15.00 | ----- | z | |||||||
1963 | -27.00 | -22.00 | -4.00 | 15.00 | 21.00 | 40.00 | 52.00 | 43.00 | 38.00 | 28.00 | 5.00 | -30.00 | -30.00 | |||||||||||||
1964 | -20.00 | g | -16.00 | b | -12.00 | 17.00 | ----- | z | ----- | z | 49.00 | j | 35.00 | 31.00 | 19.00 | -20.00 | -24.00 | ----- | z | |||||||
1965 | -32.00 | -32.00 | -17.00 | 27.00 | 31.00 | 41.00 | 44.00 | 36.00 | 19.00 | 15.00 | -4.00 | -17.00 | -32.00 | |||||||||||||
1966 | -35.00 | -27.00 | -16.00 | 13.00 | 23.00 | 36.00 | a | 48.00 | 47.00 | 30.00 | 19.00 | a | -1.00 | a | -20.00 | a | -35.00 | d | ||||||||
1967 | -29.00 | -25.00 | -20.00 | b | 12.00 | 18.00 | 39.00 | 39.00 | 39.00 | 24.00 | 12.00 | -5.00 | -34.00 | -34.00 | b | |||||||||||
1968 | -35.00 | a | -21.00 | -6.00 | 11.00 | 27.00 | 37.00 | 42.00 | 37.00 | 36.00 | 23.00 | 9.00 | -30.00 | -35.00 | a | |||||||||||
1969 | -27.00 | -29.00 | -15.00 | 15.00 | 28.00 | 33.00 | 41.00 | 48.00 | 33.00 | 15.00 | -2.00 | -11.00 | -29.00 | |||||||||||||
1970 | -35.00 | -29.00 | -5.00 | a | 11.00 | 25.00 | 39.00 | 46.00 | 42.00 | 29.00 | 20.00 | -6.00 | a | -22.00 | -35.00 | b | ||||||||||
1971 | -29.00 | -30.00 | -8.00 | 11.00 | 27.00 | 43.00 | 40.00 | 42.00 | 29.00 | 22.00 | 4.00 | -18.00 | a | -30.00 | a | |||||||||||
1972 | -35.00 | -31.00 | -23.00 | 14.00 | 27.00 | 38.00 | b | 40.00 | 39.00 | 29.00 | 10.00 | -4.00 | ----- | z | ----- | z | ||||||||||
1973 | -28.00 | a | -18.00 | 20.00 | b | 13.00 | 25.00 | 42.00 | 45.00 | 48.00 | 27.00 | 27.00 | -0.00 | -30.00 | -30.00 | c | ||||||||||
1974 | -33.00 | -32.00 | a | -20.00 | ----- | z | 27.00 | 41.00 | 48.00 | a | 40.00 | 20.00 | 19.00 | a | 2.00 | -4.00 | ----- | z | ||||||||
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.00 | 46.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | 32.00 | a | 47.00 | 48.00 | 43.00 | 39.00 | ----- | z | ----- | z | -30.00 | ----- | z | |||||
1978 | -28.00 | -25.00 | -22.00 | ----- | z | 32.00 | b | 37.00 | ----- | z | ----- | z | ----- | z | 18.00 | -20.00 | -25.00 | d | ----- | z | ||||||
1979 | -32.00 | -33.00 | -15.00 | -7.00 | 25.00 | 41.00 | 49.00 | 40.00 | 32.00 | 15.00 | -5.00 | -17.00 | -33.00 | |||||||||||||
1980 | -29.00 | -33.00 | -29.00 | 23.00 | 27.00 | 40.00 | 45.00 | 46.00 | c | 29.00 | a | 15.00 | b | 16.00 | n | -21.00 | b | -33.00 | v | |||||||
1981 | -21.00 | a | -25.00 | a | 5.00 | a | 16.00 | 22.00 | 43.00 | 48.00 | 48.00 | 30.00 | 15.00 | 10.00 | -18.00 | -25.00 | c | |||||||||
1982 | -32.00 | d | -38.00 | -14.00 | b | 6.00 | c | 25.00 | 33.00 | 48.00 | a | 32.00 | d | 29.00 | b | 22.00 | a | -8.00 | a | -6.00 | a | -38.00 | s | |||
1983 | -15.00 | a | -15.00 | 5.00 | a | 20.00 | 25.00 | 39.00 | a | 40.00 | 50.00 | 27.00 | a | 21.00 | 5.00 | a | -35.00 | -35.00 | e | |||||||
1984 | -40.00 | b | -20.00 | a | -13.00 | a | 21.00 | 26.00 | 38.00 | 41.00 | b | 40.00 | a | 20.00 | a | 9.00 | a | -1.00 | b | -23.00 | -40.00 | k | ||||
1985 | -33.00 | -30.00 | -2.00 | b | ----- | z | ----- | z | 35.00 | 45.00 | a | 40.00 | b | 23.00 | a | 18.00 | b | -29.00 | -26.00 | a | ----- | z | ||||
1986 | -35.00 | a | -25.00 | a | -20.00 | b | 16.00 | b | ----- | z | 42.00 | b | 49.00 | b | 33.00 | d | 31.00 | f | 14.00 | g | -8.00 | e | -19.00 | h | ----- | z |
1987 | -27.00 | k | 7.00 | h | -2.00 | h | ----- | z | 35.00 | t | ----- | z | 45.00 | o | ----- | 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 | ----- | 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 | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 |
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 |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -30.50 | -26.48 | -11.00 | 14.11 | 26.05 | 39.22 | 45.00 | 41.50 | 28.76 | 18.14 | -3.14 | -21.71 | -31.64 | |||||||||||||
S.D. | 5.55 | 6.13 | 11.43 | 7.24 | 3.47 | 3.26 | 3.66 | 5.09 | 5.44 | 4.90 | 10.20 | 8.47 | 3.17 | |||||||||||||
SKEW | 1.06 | 0.26 | 0.96 | -1.06 | -0.24 | 0.04 | -0.14 | -0.11 | -0.07 | 0.10 | -0.87 | 0.40 | 0.64 | |||||||||||||
MAX | -15.00 | -15.00 | 20.00 | 27.00 | 32.00 | 47.00 | 52.00 | 50.00 | 39.00 | 28.00 | 12.00 | -4.00 | -25.00 | |||||||||||||
MIN | -40.00 | -38.00 | -29.00 | -7.00 | 18.00 | 33.00 | 39.00 | 32.00 | 19.00 | 9.00 | -29.00 | -35.00 | -35.00 | |||||||||||||
YRS | 20 | 21 | 21 | 18 | 20 | 23 | 22 | 22 | 21 | 21 | 21 | 21 | 11 |