YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1904 | ----- | z | ----- | z | ----- | z | ----- | z | 31.97 | a | ----- | z | 34.65 | 29.23 | 11.33 | 1.19 | -16.00 | -10.43 | c | 11.71 | e | |||||
1905 | -21.74 | -14.39 | -0.19 | 19.21 | b | 33.04 | h | 39.92 | e | 43.45 | b | 55.71 | 40.55 | a | 20.68 | -3.43 | ----- | z | 17.98 | b | ||||||
1906 | ----- | z | ----- | z | 12.28 | b | ----- | z | ----- | z | 58.30 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 35.29 | j | |
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | 23.03 | 31.26 | 40.77 | 42.84 | 40.10 | 28.14 | a | 9.68 | -13.97 | a | -27.87 | a | 19.33 | c | ||||||
1942 | -8.50 | a | -2.38 | b | -3.90 | b | 14.31 | a | 33.42 | 43.10 | 45.94 | 39.90 | 33.53 | 21.57 | a | -14.76 | a | -34.83 | b | 13.95 | ||||||
1943 | -31.38 | b | -13.76 | c | -3.21 | b | 16.30 | 39.52 | ----- | z | ----- | z | 42.74 | 34.47 | 17.63 | a | -0.63 | -7.97 | b | 9.37 | b | |||||
1944 | -17.37 | a | -15.31 | -2.00 | 11.00 | 36.50 | u | 44.53 | 49.06 | 41.45 | 31.57 | 20.90 | -4.27 | -13.03 | 13.32 | a | ||||||||||
1945 | -16.48 | -10.21 | -4.61 | 11.63 | 30.65 | 41.27 | 46.32 | 44.00 | 33.23 | 15.26 | -18.77 | -16.35 | 12.99 | |||||||||||||
1946 | -22.19 | -9.96 | -8.87 | 14.57 | 35.10 | 49.03 | a | 49.16 | 39.65 | 31.77 | 19.10 | -16.55 | a | -37.73 | a | 11.92 | ||||||||||
1947 | -32.63 | a | -19.46 | 3.71 | 19.60 | 35.87 | 42.57 | 49.90 | 40.13 | 31.50 | 16.19 | 1.47 | -12.77 | a | 14.67 | |||||||||||
1948 | -14.23 | -21.00 | -11.48 | 11.97 | 34.65 | 44.97 | 47.58 | 40.10 | 29.70 | 17.03 | -9.17 | -35.29 | 11.24 | |||||||||||||
1949 | -22.10 | -32.68 | 0.71 | 11.97 | 30.81 | 40.07 | 47.65 | 42.52 | 33.73 | 12.42 | ----- | z | ----- | z | 16.51 | b | ||||||||||
1950 | -16.52 | -37.07 | -7.61 | 11.67 | 33.26 | 47.50 | 46.90 | 40.77 | ----- | z | 16.61 | -24.27 | -20.16 | 8.28 | a | |||||||||||
1951 | -37.97 | -29.57 | -18.10 | 19.97 | 30.52 | 37.57 | 44.55 | 39.93 | a | 33.07 | 4.00 | a | ----- | z | -23.41 | b | 9.14 | a | ||||||||
1952 | -40.59 | b | -22.15 | b | -10.05 | j | 13.00 | b | 27.34 | b | 39.68 | b | 42.62 | g | 37.00 | h | 28.54 | d | 18.71 | c | 0.12 | f | -25.63 | d | 4.86 | d |
1953 | -43.39 | -14.61 | -14.74 | 20.07 | c | 35.59 | b | 47.03 | a | 44.67 | j | 41.81 | d | 28.96 | f | 13.90 | b | -13.24 | e | -20.47 | a | 5.20 | b | |||
1954 | -26.87 | -28.79 | -3.48 | 6.53 | 33.93 | b | 41.70 | 46.19 | 40.87 | a | 29.77 | 17.60 | a | 5.34 | a | -27.00 | o | 14.80 | a | |||||||
1955 | ----- | z | -18.17 | v | -10.63 | a | 11.93 | 26.35 | 38.87 | 44.42 | 39.52 | 26.17 | 10.26 | d | -27.29 | b | -28.84 | 13.08 | b | |||||||
1956 | -35.83 | b | -21.68 | a | -11.55 | 13.30 | 29.35 | 42.90 | 44.16 | 39.71 | 27.74 | c | 8.39 | c | -12.62 | a | -34.66 | b | 7.44 | |||||||
1957 | -16.93 | b | -13.29 | d | -0.19 | 12.73 | 28.69 | b | 42.13 | 44.07 | d | 37.91 | i | 26.90 | 11.97 | 2.73 | -27.19 | 10.15 | a | |||||||
1958 | -19.79 | b | -13.80 | c | -0.90 | a | 13.30 | 30.03 | 40.23 | 41.35 | 41.27 | a | 25.32 | b | 1.48 | -9.30 | j | -22.48 | 12.37 | a | ||||||
1959 | -35.13 | -10.32 | -12.77 | 16.76 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | -13.75 | r | -20.23 | i | -19.41 | i | |||
1960 | -20.00 | f | -10.00 | b | -17.78 | m | 16.50 | l | 30.91 | i | 40.63 | k | 41.31 | b | 38.45 | i | 29.83 | 17.96 | f | ----- | z | -14.23 | a | 11.73 | h | |
1961 | -21.13 | -16.89 | a | -20.00 | f | ----- | z | 27.63 | a | 41.73 | h | 37.90 | 35.35 | 28.03 | 11.61 | -18.07 | -36.77 | a | 5.30 | c | ||||||
1962 | -18.77 | a | -8.42 | b | -8.90 | 20.88 | f | 29.93 | c | 39.45 | a | 46.74 | d | 42.69 | e | 26.87 | 19.11 | d | 1.17 | a | -16.77 | 13.92 | a | |||
1963 | -10.17 | a | -12.50 | -4.71 | 11.17 | 29.87 | 38.00 | 45.81 | 36.00 | 33.23 | 19.06 | -19.40 | -16.58 | 12.48 | ||||||||||||
1964 | -30.77 | -10.55 | -18.06 | 14.07 | 21.61 | 39.63 | 38.23 | ----- | z | 27.57 | i | ----- | z | ----- | z | ----- | z | 7.74 | e | |||||||
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 4.09 | i | -14.69 | a | -22.93 | b | -18.81 | j |
1966 | -22.93 | b | -20.62 | d | 1.50 | s | ----- | z | ----- | z | ----- | z | ----- | z | 40.73 | t | ----- | z | ----- | z | ----- | z | ----- | z | -21.78 | j |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.74 | 28.71 | 22.23 | ----- | z | ----- | z | ----- | z | 31.23 | i | |||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | ----- | 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 | 28.10 | 41.10 | 45.74 | 41.35 | 31.00 | 15.27 | a | -16.28 | a | -20.27 | a | 20.75 | d | |||||
2000 | -25.77 | -4.76 | -0.13 | 15.37 | 29.10 | 41.57 | 45.03 | 39.03 | 31.07 | 6.60 | a | -2.67 | -16.97 | 13.12 | ||||||||||||
2001 | -12.19 | -11.89 | -2.54 | r | 18.91 | s | ----- | z | ----- | z | ----- | z | ----- | z | 23.86 | w | 17.87 | p | ----- | z | -3.29 | x | -12.04 | j | ||
2002 | ----- | z | -9.50 | n | -1.00 | s | 5.15 | q | ----- | z | 39.71 | p | ----- | z | 39.30 | u | 31.75 | n | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.50 | v | 60.20 | k | -21.57 | q | 8.12 | n | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.00 | u | 64.29 | q | 61.31 | r | ----- | 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 |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -24.05 | -16.39 | -5.62 | 14.40 | 31.02 | 42.58 | 44.47 | 40.11 | 29.57 | 13.85 | -10.70 | -22.65 | 12.23 | |||||||||||||
S.D. | 9.65 | 8.45 | 7.24 | 3.88 | 3.77 | 4.46 | 3.66 | 5.01 | 5.30 | 5.95 | 9.23 | 8.75 | 2.22 | |||||||||||||
SKEW | -0.37 | -0.79 | 0.23 | 0.51 | -0.07 | 1.99 | -0.94 | 0.34 | -1.40 | -0.75 | 0.18 | -0.26 | -1.26 | |||||||||||||
MAX | -8.50 | -2.38 | 12.28 | 23.03 | 39.52 | 58.30 | 49.90 | 55.71 | 40.55 | 21.57 | 5.34 | -7.97 | 14.67 | |||||||||||||
MIN | -43.39 | -37.07 | -18.10 | 6.53 | 21.61 | 37.57 | 34.65 | 28.71 | 11.33 | 1.19 | -27.29 | -37.73 | 7.44 | |||||||||||||
YRS | 25 | 26 | 23 | 22 | 24 | 24 | 25 | 24 | 25 | 25 | 22 | 24 | 8 |