YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | 36.00 | 42.00 | 39.00 | 46.00 | 33.00 | 18.00 | 19.00 | 4.00 | ----- | z | ||||||||
1972 | -7.00 | a | -2.00 | a | 23.00 | a | 25.00 | 32.00 | 43.00 | 45.00 | 46.00 | 30.00 | 19.00 | 24.00 | -7.00 | a | -7.00 | d | ||||||||
1973 | -0.00 | 15.00 | 27.00 | a | 26.00 | 31.00 | 39.00 | 47.00 | 38.00 | 32.00 | 31.00 | a | 19.00 | ----- | z | ----- | z | |||||||||
1974 | -5.00 | a | 24.00 | 19.00 | 28.00 | 33.00 | 40.00 | 45.00 | 50.00 | 34.00 | 28.00 | 23.00 | 17.00 | -5.00 | a | |||||||||||
1975 | 10.00 | 11.00 | 19.00 | 23.00 | 35.00 | 42.00 | 52.00 | 45.00 | 37.00 | 26.00 | 17.00 | 16.00 | 10.00 | |||||||||||||
1976 | 16.00 | 9.00 | a | 11.00 | 28.00 | 35.00 | 36.00 | 42.00 | 45.00 | 37.00 | 25.00 | 14.00 | 17.00 | a | 9.00 | b | ||||||||||
1977 | 6.00 | 19.00 | c | 27.00 | a | 30.00 | 33.00 | 39.00 | 45.00 | 46.00 | 37.00 | 28.00 | 6.00 | 7.00 | 6.00 | d | ||||||||||
1978 | 2.00 | 17.00 | 18.00 | 29.00 | 33.00 | 40.00 | 49.00 | 42.00 | 36.00 | 21.00 | 10.00 | -14.00 | -14.00 | |||||||||||||
1979 | -13.00 | -8.00 | 20.00 | 27.00 | 36.00 | 40.00 | 38.00 | 49.00 | 37.00 | 27.00 | 13.00 | 16.00 | -13.00 | |||||||||||||
1980 | -14.00 | 19.00 | c | 19.00 | 26.00 | 36.00 | 37.00 | 40.00 | 38.00 | 37.00 | 23.00 | 20.00 | 10.00 | a | -14.00 | d | ||||||||||
1981 | 27.00 | -1.00 | 23.00 | 26.00 | 29.00 | 39.00 | 38.00 | 46.00 | 33.00 | b | 22.00 | 19.00 | 5.00 | -1.00 | b | |||||||||||
1982 | -10.00 | 10.00 | a | 21.00 | 23.00 | 30.00 | 39.00 | 43.00 | b | 45.00 | 33.00 | 21.00 | 8.00 | a | 6.00 | -10.00 | d | |||||||||
1983 | 9.00 | 18.00 | a | 27.00 | 27.00 | 32.00 | 40.00 | 43.00 | 49.00 | 26.00 | 26.00 | a | 17.00 | -14.00 | -14.00 | b | ||||||||||
1984 | 2.00 | a | 23.00 | 25.00 | 28.00 | 29.00 | 38.00 | 43.00 | 43.00 | 29.00 | 20.00 | 20.00 | -4.00 | a | -4.00 | b | ||||||||||
1985 | 2.00 | -2.00 | 22.00 | 26.00 | 30.00 | 41.00 | 46.00 | 44.00 | 24.00 | a | 22.00 | -7.00 | -5.00 | a | -7.00 | b | ||||||||||
1986 | 11.00 | 5.00 | 26.00 | 26.00 | 31.00 | 43.00 | 41.00 | 46.00 | 32.00 | 26.00 | 16.00 | a | 17.00 | a | 5.00 | b | ||||||||||
1987 | 6.00 | a | 18.00 | 21.00 | 30.00 | 33.00 | 39.00 | 48.00 | 43.00 | 34.00 | 25.00 | b | 18.00 | 5.00 | c | 5.00 | f | |||||||||
1988 | 5.00 | b | 2.00 | a | 23.00 | 26.00 | 32.00 | 40.00 | 43.00 | 43.00 | 33.00 | 21.00 | d | 22.00 | 3.00 | 2.00 | g | |||||||||
1989 | 14.00 | a | -8.00 | 9.00 | 30.00 | 34.00 | 43.00 | 43.00 | 47.00 | 36.00 | 24.00 | b | 22.00 | 18.00 | -8.00 | c | ||||||||||
1990 | 19.00 | b | 9.00 | c | 22.00 | 32.00 | 36.00 | 41.00 | 43.00 | 44.00 | 35.00 | 26.00 | 22.00 | b | -20.00 | b | -20.00 | i | ||||||||
1991 | -0.00 | b | 25.00 | 23.00 | a | 29.00 | 33.00 | 39.00 | 47.00 | 45.00 | 35.00 | 17.00 | a | 16.00 | a | 17.00 | a | -0.00 | f | |||||||
1992 | 17.00 | b | 23.00 | 26.00 | 28.00 | 33.00 | 43.00 | 49.00 | 39.00 | 33.00 | 22.00 | a | 16.00 | 6.00 | 6.00 | c | ||||||||||
1993 | -12.00 | 4.00 | 14.00 | 29.00 | 37.00 | 42.00 | 45.00 | 42.00 | 33.00 | 27.00 | c | -0.00 | 21.00 | a | -12.00 | d | ||||||||||
1994 | 19.00 | 5.00 | 22.00 | 30.00 | 33.00 | 39.00 | 47.00 | 48.00 | 40.00 | 29.00 | a | 17.00 | a | 9.00 | 5.00 | b | ||||||||||
1995 | 5.00 | 8.00 | 15.00 | 27.00 | 39.00 | 44.00 | 50.00 | 42.00 | 34.00 | 19.00 | 16.00 | 13.00 | 5.00 | |||||||||||||
1996 | -14.00 | a | -12.00 | b | 17.00 | a | 29.00 | 31.00 | 41.00 | a | 44.00 | 47.00 | 32.00 | 23.00 | 14.00 | a | -4.00 | d | -14.00 | j | ||||||
1997 | -2.00 | a | 9.00 | ----- | z | ----- | z | 30.00 | 43.00 | b | 46.00 | 48.00 | f | 39.00 | a | ----- | 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 | 3.58 | 9.23 | 20.76 | 27.52 | 33.04 | 40.44 | 44.48 | 44.54 | 33.74 | 23.69 | 15.42 | 5.56 | -3.32 | |||||||||||||
S.D. | 11.28 | 10.60 | 4.82 | 2.20 | 2.56 | 2.03 | 3.57 | 3.15 | 3.60 | 3.64 | 7.16 | 11.37 | 8.58 | |||||||||||||
SKEW | 0.08 | -0.28 | -0.76 | -0.23 | 0.35 | -0.12 | 0.00 | -0.47 | -0.82 | 0.01 | -1.57 | -0.64 | 0.17 | |||||||||||||
MAX | 27.00 | 25.00 | 27.00 | 32.00 | 39.00 | 44.00 | 52.00 | 50.00 | 40.00 | 31.00 | 24.00 | 21.00 | 10.00 | |||||||||||||
MIN | -14.00 | -12.00 | 9.00 | 23.00 | 29.00 | 36.00 | 38.00 | 38.00 | 24.00 | 17.00 | -7.00 | -20.00 | -14.00 | |||||||||||||
YRS | 26 | 26 | 25 | 25 | 27 | 27 | 27 | 26 | 27 | 26 | 26 | 25 | 19 |