YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | 28.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | 26.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
1971 | ----- | z | ----- | z | 3.00 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -17.00 | m | ----- | z |
1972 | -34.00 | i | -25.00 | e | -29.00 | f | 8.00 | a | ----- | z | 37.00 | b | 42.00 | 39.00 | b | 31.00 | b | 9.00 | -5.00 | a | -28.00 | ----- | z | |||
1973 | ----- | z | -19.00 | a | ----- | z | 13.00 | a | 24.00 | 39.00 | b | 45.00 | b | 45.00 | ----- | z | 28.00 | 1.00 | -25.00 | c | ----- | z | ||||
1974 | -33.00 | -26.00 | -24.00 | 2.00 | b | 28.00 | 40.00 | 48.00 | a | 39.00 | 24.00 | 21.00 | ----- | z | ----- | z | ----- | z | ||||||||
1975 | -21.00 | a | -26.00 | a | -17.00 | -15.00 | ----- | z | ----- | z | 44.00 | 41.00 | b | 33.00 | 24.00 | -2.00 | -23.00 | ----- | z | |||||||
1976 | -28.00 | a | -20.00 | a | ----- | z | 27.00 | 22.00 | 40.00 | 44.00 | a | 41.00 | 26.00 | b | ----- | z | ----- | z | ----- | z | ----- | z | ||||
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -16.00 | a | ----- | z | ----- | z |
1978 | ----- | z | -25.00 | -13.00 | 17.00 | 34.00 | 37.00 | a | 47.00 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | -31.00 | ----- | z | |
1991 | -27.00 | -17.00 | -14.00 | 22.00 | 29.00 | 48.00 | 47.00 | 48.00 | a | 29.00 | a | 6.00 | -5.00 | a | -18.00 | d | -27.00 | g | ||||||||
1992 | -20.00 | b | -16.00 | b | 4.00 | 7.00 | 28.00 | 38.00 | 43.00 | 38.00 | 26.00 | 12.00 | 3.00 | -27.00 | -27.00 | d | ||||||||||
1993 | -36.00 | a | -21.00 | -11.00 | 17.00 | 29.00 | 38.00 | 44.00 | 41.00 | 27.00 | 12.00 | -3.00 | a | -22.00 | -36.00 | b | ||||||||||
1994 | -35.00 | b | -32.00 | -2.00 | 14.00 | 28.00 | 42.00 | 48.00 | a | 42.00 | 35.00 | 21.00 | 4.00 | -13.00 | a | -35.00 | d | |||||||||
1995 | -18.00 | -22.00 | a | -22.00 | 1.00 | 28.00 | 37.00 | 46.00 | 50.00 | 27.00 | 24.00 | -8.00 | -24.00 | a | -24.00 | b | ||||||||||
1996 | -38.00 | a | -42.00 | -18.00 | 3.00 | 27.00 | 34.00 | c | 46.00 | 45.00 | 30.00 | a | 11.00 | c | -17.00 | -29.00 | a | -42.00 | i | |||||||
1997 | ----- | z | -20.00 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.00 | 31.00 | ----- | z | ----- | z | -11.00 | ----- | z | |||
1998 | -23.00 | a | -9.00 | b | -9.00 | a | 27.00 | a | 35.00 | 37.00 | a | 46.00 | 50.00 | 36.00 | 26.00 | 4.00 | b | -18.00 | -23.00 | h | ||||||
1999 | -33.00 | a | -13.00 | 4.00 | a | 26.00 | 31.00 | a | 38.00 | b | 49.00 | b | 45.00 | 29.00 | 16.00 | a | 5.00 | a | ----- | z | ----- | z | ||||
2000 | -18.00 | b | -16.00 | 6.00 | 11.00 | c | 31.00 | d | 43.00 | b | 47.00 | b | 43.00 | b | 31.00 | a | 21.00 | a | 3.00 | c | -23.00 | -23.00 | t | |||
2001 | -17.00 | b | -23.00 | b | 4.00 | j | 18.00 | g | 35.00 | c | 45.00 | i | 42.00 | c | 43.00 | f | 33.00 | d | 16.00 | a | 14.00 | e | -5.00 | g | ----- | z |
2002 | -12.00 | d | -11.00 | b | -13.00 | a | 13.00 | h | 26.00 | h | 47.00 | g | 50.00 | d | 43.00 | c | 34.00 | i | 14.00 | c | -2.00 | e | -8.00 | j | ----- | z |
2003 | -22.00 | e | -24.00 | i | -23.00 | g | 12.00 | t | ----- | 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 |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -25.40 | -21.28 | -9.92 | 12.00 | 28.94 | 39.14 | 45.76 | 43.25 | 29.87 | 17.40 | -1.60 | -22.46 | -30.50 | |||||||||||||
S.D. | 8.08 | 7.77 | 10.00 | 11.57 | 3.62 | 3.42 | 2.36 | 3.70 | 3.48 | 6.70 | 8.06 | 6.04 | 5.92 | |||||||||||||
SKEW | -0.12 | -0.84 | 0.38 | -0.58 | 0.15 | 1.20 | -0.03 | 0.55 | 0.12 | -0.04 | -0.33 | 0.53 | 0.11 | |||||||||||||
MAX | -12.00 | -9.00 | 6.00 | 27.00 | 35.00 | 48.00 | 50.00 | 50.00 | 36.00 | 28.00 | 14.00 | -11.00 | -24.00 | |||||||||||||
MIN | -38.00 | -42.00 | -24.00 | -15.00 | 22.00 | 34.00 | 42.00 | 38.00 | 24.00 | 6.00 | -17.00 | -31.00 | -36.00 | |||||||||||||
YRS | 15 | 18 | 13 | 15 | 16 | 14 | 17 | 16 | 15 | 15 | 15 | 13 | 4 |