YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1904 | ----- | z | ----- | z | ----- | z | ----- | z | 57.10 | ----- | z | 70.29 | 67.19 | 48.59 | a | 34.90 | ----- | z | ----- | z | 55.61 | g | ||||
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.33 | a | 73.23 | 69.03 | a | 37.82 | c | 18.27 | ----- | z | 54.54 | g | ||
1906 | ----- | z | ----- | z | 27.13 | a | ----- | z | ----- | z | 77.50 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.32 | 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 | 51.60 | 59.94 | 72.33 | 71.42 | 71.29 | 50.97 | 30.00 | b | 6.61 | b | -7.73 | a | 45.16 | c | ||||||
1942 | 9.77 | a | 18.67 | a | 27.73 | a | 45.03 | a | 66.00 | 69.38 | a | 69.48 | 64.32 | 56.67 | 34.90 | a | 1.34 | a | -19.52 | 36.98 | ||||||
1943 | -18.10 | b | 10.48 | a | 21.94 | 45.43 | 59.71 | ----- | z | ----- | z | 61.65 | 53.00 | 36.93 | a | 15.37 | 6.43 | a | 29.28 | b | ||||||
1944 | -0.33 | a | 15.48 | 23.42 | 39.63 | 61.67 | v | 69.83 | a | 71.13 | 63.65 | 49.57 | 35.77 | a | 9.73 | 3.55 | 34.67 | a | ||||||||
1945 | 2.74 | 12.00 | 23.55 | 33.53 | 55.06 | 64.37 | 66.26 | 65.48 | 49.97 | 32.29 | 2.70 | -1.39 | 33.88 | |||||||||||||
1946 | -1.77 | 8.37 | a | 17.58 | 41.80 | 60.74 | 72.93 | 71.13 | 66.00 | 51.37 | 37.00 | 0.18 | b | -19.20 | a | 33.84 | ||||||||||
1947 | -13.23 | a | 3.36 | 30.77 | 40.23 | 59.68 | 64.03 | 74.19 | 60.77 | 49.00 | 31.97 | 16.40 | 2.87 | a | 35.00 | |||||||||||
1948 | 2.97 | 2.69 | 18.45 | 34.44 | c | 57.33 | a | 69.54 | b | 71.00 | 61.32 | 49.10 | 33.23 | 5.00 | -15.03 | 32.50 | ||||||||||
1949 | -2.16 | -3.14 | 31.06 | 38.73 | 53.55 | 58.87 | 67.55 | 67.13 | 58.30 | 29.84 | ----- | z | ----- | z | 39.97 | b | ||||||||||
1950 | 4.65 | -10.39 | 27.48 | 38.33 | 56.61 | 71.03 | 69.42 | 68.68 | ----- | z | 32.55 | -0.77 | 3.71 | 32.85 | a | |||||||||||
1951 | -12.94 | 4.21 | 16.90 | 45.90 | 60.97 | 66.20 | 74.71 | 71.77 | 56.63 | 27.67 | a | ----- | z | -0.14 | c | 37.44 | a | |||||||||
1952 | -7.73 | e | 8.79 | a | 27.33 | j | 42.25 | b | 52.17 | b | 67.68 | b | 71.22 | h | 65.70 | h | 51.19 | c | 39.54 | c | 20.21 | f | -2.39 | c | 31.44 | d |
1953 | -25.32 | 14.25 | 25.77 | a | 47.15 | c | 62.26 | d | 71.59 | a | 74.29 | j | 67.44 | d | 53.58 | f | 31.37 | a | 5.11 | c | -3.48 | b | 29.61 | b | ||
1954 | -6.48 | -2.70 | a | 26.03 | 36.87 | 61.24 | b | 69.93 | 70.31 | b | 69.43 | a | 53.70 | 37.61 | 19.18 | b | -12.27 | p | 39.56 | a | ||||||
1955 | ----- | z | 11.50 | v | 22.42 | 36.27 | 52.29 | 63.93 | 72.84 | 60.94 | 52.34 | a | 29.00 | d | -7.93 | c | -7.81 | 37.43 | b | |||||||
1956 | -17.29 | -3.32 | a | 16.97 | 40.37 | 57.10 | 64.62 | a | 70.50 | a | 63.97 | b | 49.14 | b | 22.62 | b | 10.11 | b | -18.00 | a | 29.73 | |||||
1957 | 4.17 | b | 9.38 | d | 31.71 | 44.27 | 53.48 | b | 74.93 | 71.75 | c | 68.50 | i | 48.70 | 36.84 | 20.60 | -11.97 | a | 34.90 | a | ||||||
1958 | 0.83 | a | 7.00 | b | 29.40 | a | 49.20 | 58.26 | 75.03 | 73.93 | a | 66.58 | 52.72 | a | 23.29 | 7.45 | j | -9.80 | a | 38.77 | a | |||||
1959 | -13.62 | g | 13.79 | 13.52 | 41.05 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9.78 | u | -4.31 | r | 13.65 | j | ||
1960 | -4.04 | g | 11.24 | d | 12.13 | p | 44.63 | k | 52.86 | x | ----- | z | 66.63 | l | 68.50 | m | 48.27 | 34.92 | g | ----- | z | 6.87 | 22.13 | i | ||
1961 | -4.97 | a | 2.86 | 12.52 | f | ----- | z | 60.45 | 70.00 | h | 72.06 | 64.52 | 49.47 | 27.27 | a | 4.33 | -20.35 | 28.40 | c | |||||||
1962 | 1.55 | 14.18 | 23.84 | 41.67 | f | 55.71 | c | 67.27 | 75.67 | d | 73.00 | e | 52.00 | 37.41 | d | 17.10 | a | 2.72 | b | 38.22 | a | |||||
1963 | 5.29 | 12.93 | a | 24.65 | 39.17 | 59.63 | a | 64.70 | 70.13 | a | 72.52 | 55.90 | 35.00 | 0.21 | f | 0.58 | 40.04 | a | ||||||||
1964 | -11.13 | 16.86 | 15.32 | 39.67 | 48.19 | 74.90 | 70.10 | ----- | z | 54.71 | i | ----- | z | ----- | z | ----- | z | 36.27 | e | |||||||
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 19.05 | i | 0.89 | b | -6.55 | b | -2.83 | j |
1966 | -6.55 | b | 3.83 | e | 31.25 | s | ----- | z | ----- | z | ----- | z | ----- | z | 68.91 | t | ----- | z | ----- | z | ----- | z | ----- | z | -1.36 | j |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.33 | d | 74.27 | a | 62.42 | d | 46.79 | b | ----- | z | ----- | z | 64.20 | h |
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 | 56.13 | 72.17 | 72.35 | 69.61 | 54.83 | 31.42 | 6.28 | a | -0.94 | 45.23 | d | |||||||
2000 | -6.47 | a | 21.86 | 31.74 | 43.90 | 54.16 | 70.20 | 70.90 | 60.45 | 48.50 | 29.26 | 13.41 | a | 0.27 | a | 36.52 | ||||||||||
2001 | 9.19 | 13.07 | 32.23 | r | 46.45 | s | ----- | z | ----- | z | ----- | z | ----- | z | 56.33 | x | 35.94 | o | ----- | z | 8.67 | y | 11.13 | j | ||
2002 | ----- | z | 12.71 | n | 27.08 | r | 42.07 | p | ----- | z | 70.54 | q | ----- | z | 67.73 | t | 58.85 | q | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.10 | t | 67.05 | i | 66.14 | q | 50.00 | n | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 78.44 | u | 77.71 | q | 79.00 | 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 | -4.06 | 8.23 | 23.97 | 41.61 | 57.41 | 69.26 | 71.45 | 66.88 | 52.85 | 33.16 | 8.20 | -5.10 | 34.07 | |||||||||||||
S.D. | 9.15 | 7.77 | 5.57 | 4.74 | 3.94 | 4.54 | 2.24 | 4.33 | 4.93 | 5.22 | 7.89 | 8.71 | 2.47 | |||||||||||||
SKEW | -0.52 | -0.52 | -0.29 | 0.27 | -0.19 | -0.26 | -0.18 | 0.11 | 1.71 | 0.15 | -0.04 | -0.48 | -0.53 | |||||||||||||
MAX | 9.77 | 21.86 | 31.74 | 51.60 | 66.00 | 77.50 | 75.67 | 74.27 | 69.03 | 46.79 | 20.60 | 6.87 | 36.98 | |||||||||||||
MIN | -25.32 | -10.39 | 13.52 | 33.53 | 48.19 | 58.87 | 66.26 | 60.45 | 48.27 | 22.62 | -7.93 | -20.35 | 29.73 | |||||||||||||
YRS | 23 | 25 | 22 | 21 | 24 | 23 | 24 | 24 | 25 | 26 | 20 | 23 | 7 |