YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.57 | 0.00 | 0.05 | 0.80 | 0.67 | 1.30 | 0.45 | ----- | z | |||||||
1906 | 0.28 | 0.55 | 1.01 | 0.25 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
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 | 0.25 | v | 0.58 | o | 0.40 | 0.40 | r | ----- | z | |
1939 | 0.30 | 1.01 | 0.55 | 0.35 | 0.29 | 0.34 | 0.54 | 0.00 | 0.23 | 0.51 | 0.26 | 0.60 | 1.01 | |||||||||||||
1940 | 0.75 | 1.20 | 0.78 | 0.56 | 0.20 | v | 0.26 | 1.04 | t | ----- | z | 0.82 | 0.99 | 0.95 | 0.55 | ----- | z | |||||||||
1941 | 0.54 | 0.38 | 0.31 | 0.30 | 0.96 | 0.85 | 0.06 | ----- | z | 0.80 | 0.40 | 0.75 | 0.75 | ----- | z | |||||||||||
1942 | 0.49 | 0.35 | 0.27 | 0.48 | 0.93 | 0.50 | 0.28 | 0.20 | 0.32 | 0.82 | 1.14 | a | 0.63 | 1.14 | a | |||||||||||
1943 | 0.42 | a | 1.05 | a | 0.66 | 0.50 | 0.56 | 1.20 | 0.20 | 0.34 | 0.34 | 0.88 | 0.55 | 0.30 | 1.20 | b | ||||||||||
1944 | 0.30 | 0.35 | 0.52 | 0.73 | 0.20 | 0.70 | 0.00 | 0.24 | 0.36 | 0.33 | 0.65 | 0.34 | 0.73 | |||||||||||||
1945 | 0.54 | 0.48 | 1.15 | 0.54 | 0.50 | 0.41 | 0.00 | 0.26 | 1.39 | 0.63 | 0.67 | 0.78 | 1.39 | |||||||||||||
1946 | 0.51 | b | 0.78 | 0.31 | 0.90 | 1.52 | 0.42 | 0.24 | 0.48 | 0.51 | 0.47 | 1.15 | 0.40 | 1.52 | b | |||||||||||
1947 | 0.57 | 0.20 | 0.44 | 0.63 | 0.33 | 0.38 | 0.23 | 0.41 | 1.69 | 0.93 | 0.40 | b | 0.46 | 1.69 | b | |||||||||||
1948 | 1.64 | 1.12 | 0.95 | 0.77 | 1.54 | 0.92 | 0.60 | 0.30 | 0.88 | 0.39 | 0.76 | 0.80 | i | 1.64 | i | |||||||||||
1949 | 0.30 | a | 0.90 | 0.43 | 0.27 | 0.60 | 0.36 | 0.22 | 0.33 | 1.00 | 0.60 | 0.61 | 0.70 | 1.00 | a | |||||||||||
1950 | 0.70 | p | 0.55 | 0.65 | 0.58 | 0.32 | d | 1.20 | 0.30 | 0.65 | 0.20 | 0.80 | 0.50 | 0.60 | 1.20 | t | ||||||||||
1951 | 0.68 | d | 0.37 | 0.40 | 0.33 | 0.30 | 0.82 | 0.53 | 0.60 | 0.62 | 0.88 | 0.56 | 0.48 | 0.88 | d | |||||||||||
1952 | 0.37 | a | 0.67 | 0.39 | 0.44 | 0.15 | 0.48 | 0.00 | 0.30 | 0.34 | 0.05 | 0.24 | 0.44 | 0.67 | a | |||||||||||
1953 | 1.56 | 0.40 | 0.44 | 0.66 | 0.84 | 0.81 | 0.00 | 0.60 | 0.23 | 0.32 | 0.66 | 0.96 | 1.56 | |||||||||||||
1954 | 0.90 | 0.45 | 0.56 | c | 0.45 | f | 0.48 | 0.41 | 0.60 | 0.53 | 0.67 | 0.68 | 0.43 | 0.62 | 0.90 | i | ||||||||||
1955 | 0.43 | 0.26 | ----- | z | 0.48 | t | 0.14 | 0.44 | 0.37 | 0.00 | 0.55 | 1.36 | 0.65 | 0.74 | ----- | z | ||||||||||
1956 | 0.52 | 0.18 | 0.60 | 0.12 | 0.28 | 1.44 | 0.13 | 0.86 | 0.27 | 0.77 | 0.51 | 0.44 | 1.44 | |||||||||||||
1957 | 0.22 | 0.40 | 0.42 | 0.41 | 1.09 | 1.33 | 0.09 | 0.36 | 0.35 | 0.57 | 0.47 | 0.29 | 1.33 | |||||||||||||
1958 | 0.64 | 0.84 | 0.34 | 0.50 | 0.64 | 0.49 | 1.05 | 0.00 | 0.45 | 0.31 | 0.70 | 0.67 | 1.05 | |||||||||||||
1959 | 1.02 | 0.33 | 0.26 | 0.26 | 0.80 | 0.25 | 0.06 | 0.77 | 0.47 | 0.47 | 0.70 | 0.30 | 1.02 | |||||||||||||
1960 | 0.29 | 0.48 | 0.73 | 0.47 | 0.60 | 0.53 | 0.00 | 0.41 | 0.55 | 0.52 | 0.84 | 0.53 | 0.84 | |||||||||||||
1961 | 0.72 | 0.73 | 0.44 | ----- | z | 0.28 | 0.81 | 0.37 | 0.52 | 0.13 | 0.42 | 0.76 | 0.45 | ----- | z | |||||||||||
1962 | 0.27 | 0.20 | 1.09 | 0.65 | 0.56 | 0.35 | 0.08 | 0.29 | 0.75 | 0.52 | 0.40 | 0.50 | 1.09 | |||||||||||||
1963 | 0.80 | 0.90 | 0.60 | 0.68 | 0.28 | 0.60 | 0.32 | 0.17 | 0.60 | 0.67 | 0.50 | 0.96 | 0.96 | |||||||||||||
1964 | 0.66 | 0.14 | 0.36 | 0.55 | 0.22 | 1.27 | 0.75 | 0.60 | 0.50 | 0.24 | 1.00 | 2.20 | 2.20 | |||||||||||||
1965 | 0.40 | 0.55 | 0.50 | 0.80 | 0.70 | 2.00 | 0.63 | 1.17 | 0.20 | 0.14 | 0.50 | 0.35 | 2.00 | |||||||||||||
1966 | 0.64 | 0.30 | 0.53 | 0.25 | 0.18 | 0.80 | 0.35 | 0.30 | 0.30 | 0.44 | 0.80 | 0.87 | 0.87 | |||||||||||||
1967 | 0.76 | 0.15 | 0.45 | 0.60 | 1.02 | 0.92 | 0.00 | 0.00 | 0.57 | 0.95 | 0.38 | 0.42 | 1.02 | |||||||||||||
1968 | 0.44 | ----- | z | ----- | z | ----- | z | 1.09 | 0.47 | 0.35 | 0.36 | 1.20 | ----- | z | 0.52 | 0.40 | ----- | z | ||||||||
1969 | 0.55 | 0.22 | 0.38 | 0.56 | ----- | z | ----- | z | 0.05 | 0.00 | 0.35 | 0.58 | 0.26 | 0.70 | ----- | z | ||||||||||
1970 | 0.98 | 0.87 | 0.51 | 0.30 | 0.50 | 0.72 | 0.85 | 0.12 | 0.35 | 0.57 | 0.42 | 0.51 | 0.98 | |||||||||||||
1971 | 0.63 | 0.78 | 0.53 | 0.73 | 1.09 | 1.36 | 0.70 | 0.63 | 0.52 | 0.58 | 0.43 | 0.75 | 1.36 | |||||||||||||
1972 | 0.67 | 0.50 | 0.57 | 0.18 | 0.34 | 0.55 | t | ----- | z | 0.41 | 0.41 | 0.69 | 0.88 | 0.49 | c | ----- | z | |||||||||
1973 | 1.01 | 0.36 | 0.43 | 0.16 | 0.55 | 0.17 | ----- | z | 0.02 | 0.99 | 0.25 | 0.80 | b | 0.69 | ----- | z | ||||||||||
1974 | 1.97 | a | 0.50 | 0.80 | 0.45 | 0.18 | 0.49 | 0.41 | 0.00 | 0.11 | 0.04 | 0.38 | 0.58 | 1.97 | a | |||||||||||
1975 | 0.58 | 0.41 | 0.38 | 0.36 | 0.47 | 0.51 | 0.36 | 0.79 | ----- | z | 0.29 | 0.58 | 0.72 | ----- | z | |||||||||||
1976 | 0.41 | 0.59 | 0.26 | 0.46 | 0.59 | 0.20 | 0.13 | 0.26 | 0.00 | 0.32 | 0.13 | 0.39 | 0.59 | |||||||||||||
1977 | 0.29 | 0.13 | 0.46 | 0.10 | 0.56 | 0.49 | 0.30 | 0.56 | 0.38 | 0.31 | 0.75 | 0.95 | 0.95 | |||||||||||||
1978 | 0.27 | 0.34 | 0.41 | 0.97 | 0.70 | 0.60 | 1.37 | 0.49 | 0.44 | 0.00 | 0.80 | 0.91 | 1.37 | |||||||||||||
1979 | 0.26 | 0.64 | 0.56 | 0.21 | 0.66 | 0.50 | 0.23 | 0.30 | 0.10 | 1.03 | 0.68 | 0.49 | 1.03 | |||||||||||||
1980 | 0.68 | b | 0.30 | c | 0.48 | b | ----- | z | 0.50 | g | ----- | z | ----- | z | 0.00 | b | 0.30 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | 0.20 | w | 0.00 | x | 0.50 | l | ----- | 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 | 0.20 | l | 0.40 | ----- | z | |
2009 | 0.50 | 0.30 | 0.60 | 0.50 | 0.10 | a | 0.10 | k | ----- | z | 0.50 | b | 0.10 | 0.70 | 0.30 | 0.30 | ----- | z | ||||||||
2010 | 0.50 | 0.20 | 0.20 | 0.40 | 0.90 | 0.90 | 0.10 | 0.10 | 0.50 | 0.30 | 0.40 | 0.50 | 0.90 | |||||||||||||
2011 | 0.50 | 0.40 | 0.40 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.62 | 0.51 | 0.53 | 0.47 | 0.59 | 0.69 | 0.32 | 0.36 | 0.51 | 0.54 | 0.61 | 0.60 | 1.19 | |||||||||||||
S.D. | 0.37 | 0.28 | 0.22 | 0.21 | 0.36 | 0.39 | 0.31 | 0.27 | 0.35 | 0.29 | 0.25 | 0.31 | 0.40 | |||||||||||||
SKEW | 1.94 | 0.77 | 1.20 | 0.25 | 0.86 | 1.25 | 1.34 | 0.62 | 1.32 | 0.38 | 0.59 | 3.19 | 0.91 | |||||||||||||
MAX | 1.97 | 1.20 | 1.15 | 0.97 | 1.54 | 2.00 | 1.37 | 1.17 | 1.69 | 1.36 | 1.30 | 2.20 | 2.20 | |||||||||||||
MIN | 0.22 | 0.13 | 0.20 | 0.10 | 0.10 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.13 | 0.29 | 0.59 | |||||||||||||
YRS | 45 | 45 | 43 | 40 | 41 | 41 | 40 | 43 | 44 | 43 | 45 | 44 | 30 |