YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1912 | 1.21 | s | 2.56 | s | 0.36 | 0.67 | 0.50 | 0.42 | 0.26 | 0.42 | 0.25 | 0.45 | 0.26 | 0.90 | ----- | z | ||||||||||
1913 | 0.78 | 0.23 | 0.45 | 0.71 | 1.07 | 1.14 | 0.95 | 0.12 | ----- | z | 1.62 | 0.80 | 0.52 | ----- | z | |||||||||||
1914 | 0.43 | n | 0.39 | p | 0.16 | 0.81 | 0.22 | 0.86 | 0.18 | ----- | z | ----- | z | ----- | z | ----- | z | 0.74 | ----- | z | ||||||
1915 | 0.35 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.48 | 0.25 | 0.51 | 0.30 | 0.34 | 2.23 | v | ----- | z | |||||
1916 | 0.89 | ----- | z | ----- | z | 0.55 | a | 0.52 | s | 0.30 | 0.33 | 0.31 | 0.17 | 0.15 | 0.21 | 2.59 | ----- | z | ||||||||
1917 | 0.92 | 0.90 | ----- | z | ----- | z | 0.44 | 0.25 | 0.10 | 0.09 | 0.98 | 0.00 | 0.90 | 0.70 | ----- | z | ||||||||||
1918 | 1.01 | m | 0.40 | o | ----- | z | 0.50 | 0.30 | 0.03 | 0.30 | 0.30 | 0.35 | 1.05 | 0.30 | 0.33 | ----- | z | |||||||||
1919 | 0.45 | 0.55 | 0.12 | a | 0.43 | 0.14 | 0.07 | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | 0.65 | ----- | z | |||||||
1920 | 0.60 | ----- | 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 | 0.06 | 0.48 | 0.30 | 0.12 | 0.72 | 0.00 | 0.62 | 0.55 | 0.31 | a | 0.32 | 0.90 | r | ----- | z | |||||||||
1930 | 1.25 | 1.29 | 0.78 | 0.33 | 0.40 | 0.29 | ----- | z | 0.65 | 0.73 | 0.26 | 0.70 | 0.33 | ----- | z | |||||||||||
1931 | 0.69 | 0.63 | 0.39 | 0.34 | 0.32 | 1.15 | 0.00 | 0.08 | 0.20 | 0.83 | 0.64 | 1.38 | q | 1.38 | q | |||||||||||
1932 | 0.86 | 0.70 | a | ----- | z | ----- | z | 0.34 | y | 0.08 | 0.28 | 0.06 | 0.00 | 0.68 | 0.55 | 0.37 | ----- | z | ||||||||
1933 | 0.50 | 0.99 | 0.36 | 0.37 | 0.41 | 0.62 | 0.12 | 0.18 | 0.46 | 0.43 | 0.24 | 0.63 | 0.99 | |||||||||||||
1934 | 0.55 | s | 0.28 | 0.39 | 0.22 | 0.25 | 1.11 | 0.00 | 0.00 | 0.13 | 0.85 | 0.64 | 0.46 | 1.11 | s | |||||||||||
1935 | 0.61 | 0.49 | 0.42 | 0.40 | 0.16 | 0.47 | 0.48 | 0.00 | 0.00 | 0.22 | a | 0.55 | 0.27 | 0.61 | a | |||||||||||
1936 | 0.60 | s | 0.90 | 0.21 | 0.26 | a | 0.38 | 0.35 | 0.31 | 0.09 | 0.32 | 0.05 | 0.03 | 0.70 | 0.90 | t | ||||||||||
1937 | 0.87 | 0.41 | 0.34 | 0.34 | 0.02 | 0.48 | 0.53 | 0.32 | 0.21 | 0.64 | 0.61 | 0.79 | 0.87 | |||||||||||||
1938 | 0.84 | 0.69 | 0.67 | 0.23 | 0.53 | 0.55 | 0.19 | 0.09 | 0.22 | 0.33 | 0.49 | n | 0.28 | 0.84 | n | |||||||||||
1939 | 0.37 | 0.54 | 0.78 | v | 0.12 | 0.22 | 0.20 | 0.30 | ----- | z | 0.56 | 0.36 | 0.06 | 0.84 | ----- | z | ||||||||||
1940 | 0.36 | n | 0.41 | j | 0.49 | 0.30 | 0.16 | 0.23 | 0.80 | b | 0.38 | 0.48 | 0.93 | q | 0.55 | 0.27 | ----- | z | ||||||||
1941 | 0.69 | 0.41 | 0.07 | 0.10 | 0.23 | 0.51 | p | 0.74 | 0.60 | 0.42 | 0.38 | 0.41 | 0.84 | 0.84 | p | |||||||||||
1942 | 0.21 | 0.35 | 0.09 | 0.16 | 0.51 | 0.51 | ----- | z | ----- | z | ----- | z | ----- | z | 0.70 | 0.70 | q | ----- | z | |||||||
1943 | 0.89 | 0.45 | 0.42 | a | 0.30 | 0.27 | 0.47 | 0.40 | 0.42 | 0.00 | 0.50 | 0.79 | 0.30 | 0.89 | a | |||||||||||
1944 | 0.18 | 0.27 | 0.25 | 0.28 | 0.16 | 0.73 | 0.05 | 0.45 | 0.10 | 0.32 | 0.63 | 0.45 | 0.73 | |||||||||||||
1945 | 0.48 | 1.02 | 0.51 | 0.39 | 0.50 | 0.24 | 0.23 | 0.30 | 0.14 | 0.22 | 0.79 | 1.02 | 1.02 | |||||||||||||
1946 | 0.50 | 0.54 | 0.53 | 0.20 | 0.23 | 0.33 | 0.43 | 0.41 | 0.20 | 0.54 | 0.51 | 0.28 | 0.54 | |||||||||||||
1947 | 0.40 | 0.62 | 0.54 | 0.52 | 0.30 | 0.55 | 0.00 | 0.10 | 0.61 | 1.53 | 0.81 | 0.48 | 1.53 | |||||||||||||
1948 | 0.75 | 0.53 | 0.50 | 0.40 | 0.75 | 0.68 | 0.21 | 0.17 | a | 0.58 | 0.54 | b | 0.38 | 1.00 | 1.00 | c | ||||||||||
1949 | 0.36 | 0.89 | 0.21 | 0.10 | 0.70 | 0.04 | ----- | z | ----- | z | ----- | z | 0.43 | a | 0.72 | g | 1.12 | e | ----- | z | ||||||
1950 | 0.44 | 0.33 | 0.60 | 0.24 | c | 0.08 | 0.64 | 0.08 | a | 0.42 | 0.12 | 1.24 | j | 0.37 | e | 0.73 | a | 1.24 | t | |||||||
1951 | 0.71 | 0.47 | 0.64 | 0.62 | 1.05 | 0.25 | 0.36 | 0.10 | a | 0.20 | a | 0.48 | 0.64 | a | 1.24 | 1.24 | c | |||||||||
1952 | 0.57 | 0.66 | a | 1.06 | 0.51 | 0.89 | 0.33 | 0.00 | 0.57 | 0.47 | 0.03 | 0.24 | 0.55 | a | 1.06 | b | ||||||||||
1953 | 0.89 | 0.65 | 0.50 | b | 0.26 | 1.20 | c | 0.53 | 0.06 | 0.54 | 0.01 | 0.70 | 1.00 | 0.76 | 1.20 | e | ||||||||||
1954 | 0.55 | 0.39 | 0.27 | 0.39 | a | 0.38 | 0.46 | 0.03 | a | 0.33 | 0.05 | 0.17 | 0.31 | 0.74 | a | 0.74 | c | |||||||||
1955 | 0.18 | 0.28 | i | 0.90 | a | 0.38 | 0.08 | 0.36 | 0.35 | 0.01 | 0.58 | 1.37 | d | 1.18 | a | 1.50 | b | 1.50 | q | |||||||
1956 | 0.67 | 0.50 | 0.34 | a | 0.53 | 1.00 | a | 0.23 | a | 0.25 | 0.37 | 0.30 | a | 0.60 | 0.19 | 0.85 | a | 1.00 | e | |||||||
1957 | 0.53 | 0.68 | 0.41 | 0.33 | 0.55 | 0.16 | 0.06 | 0.23 | 0.18 | a | 0.90 | v | 0.78 | c | 0.71 | a | ----- | z | ||||||||
1958 | 0.77 | a | 0.63 | 0.29 | 0.33 | 0.30 | 1.02 | 0.47 | 0.46 | 0.34 | a | 1.10 | 0.51 | a | 0.91 | 1.10 | c | |||||||||
1959 | 0.71 | 0.33 | 0.38 | 0.20 | 0.36 | 0.36 | 0.25 | 0.28 | 1.17 | 0.70 | 0.50 | 0.27 | 1.17 | |||||||||||||
1960 | 0.36 | 0.39 | 0.45 | 0.26 | 0.67 | 0.00 | a | 0.02 | 0.53 | 0.28 | 0.36 | 0.73 | 0.50 | 0.73 | a | |||||||||||
1961 | 0.49 | 0.35 | 0.22 | 0.30 | 0.23 | 0.39 | 0.04 | 0.04 | 0.23 | 0.34 | 0.88 | 0.66 | 0.88 | |||||||||||||
1962 | 0.66 | 0.21 | 0.30 | 0.87 | 0.63 | 0.10 | 0.02 | 0.04 | 0.96 | 0.91 | 0.45 | 0.96 | 0.96 | |||||||||||||
1963 | 0.69 | 0.68 | 0.32 | 1.62 | 0.42 | 0.10 | i | ----- | z | 0.46 | 0.78 | o | 0.29 | 0.67 | 0.49 | ----- | z | |||||||||
1964 | 0.60 | 0.41 | 0.37 | 0.16 | p | 0.43 | 1.16 | 0.61 | 0.19 | 0.37 | 0.20 | 0.44 | 1.74 | 1.74 | p | |||||||||||
1965 | 1.41 | 0.43 | 0.77 | 0.61 | 0.19 | 0.47 | 0.51 | 0.90 | 0.22 | 0.15 | 0.32 | 0.19 | 1.41 | |||||||||||||
1966 | 0.76 | 0.37 | 0.90 | 0.43 | 0.25 | 1.90 | y | 0.53 | 0.04 | 0.37 | 0.50 | i | ----- | z | 0.70 | ----- | z | |||||||||
1967 | 0.55 | 0.20 | 0.45 | 0.78 | 0.34 | a | 0.59 | a | 0.18 | 0.02 | 0.41 | 0.82 | 0.39 | 0.70 | 0.82 | b | ||||||||||
1968 | 0.50 | 0.53 | 0.35 | 0.16 | 0.23 | 0.53 | 0.08 | 0.62 | 0.13 | 1.30 | 1.04 | 0.37 | 1.30 | |||||||||||||
1969 | 0.35 | 0.32 | 0.35 | 1.08 | b | 0.34 | 1.20 | 0.29 | 0.00 | 0.19 | 0.45 | 0.38 | 0.69 | 1.20 | b | |||||||||||
1970 | 0.93 | 0.38 | 0.41 | 0.37 | 0.55 | 0.35 | 0.23 | 0.00 | 0.80 | 0.45 | 1.09 | 0.37 | 1.09 | |||||||||||||
1971 | 1.29 | 0.34 | 0.38 | 0.50 | 0.98 | 0.50 | a | 0.32 | 0.15 | 0.39 | 0.30 | 0.86 | c | 1.11 | 1.29 | d | ||||||||||
1972 | 0.65 | 0.28 | 1.05 | 0.45 | 0.59 | 0.95 | 0.45 | 0.14 | 0.37 | 0.14 | 0.63 | 0.71 | 1.05 | |||||||||||||
1973 | 0.53 | 0.23 | 0.23 | 0.27 | 0.39 | 0.19 | 0.11 | 0.56 | 0.59 | 0.39 | 1.29 | 0.70 | 1.29 | |||||||||||||
1974 | 0.58 | 0.37 | 0.74 | 0.23 | 0.33 | 0.64 | 0.32 | 0.20 | 0.00 | 0.11 | 0.36 | 0.62 | 0.74 | |||||||||||||
1975 | 0.72 | 0.49 | 0.66 | 0.70 | 0.12 | 0.49 | 0.63 | 0.49 | 0.08 | a | 0.97 | c | 0.44 | 0.44 | 0.97 | d | ||||||||||
1976 | 0.98 | 0.42 | 0.37 | 0.25 | 0.36 | 0.34 | 0.26 | 0.47 | 0.30 | 0.33 | 0.26 | 0.19 | 0.98 | |||||||||||||
1977 | 0.28 | 0.23 | 0.35 | 0.66 | 0.40 | 0.64 | 0.13 | 0.50 | 0.35 | 0.41 | 1.16 | 1.45 | 1.45 | |||||||||||||
1978 | 0.35 | 0.45 | 0.26 | b | 0.53 | 0.40 | 0.19 | 0.43 | 0.63 | a | 0.63 | 0.15 | 0.63 | 0.52 | 0.63 | c | ||||||||||
1979 | 0.85 | 0.47 | 0.47 | 0.24 | 0.29 | 0.16 | 0.05 | 0.72 | 0.93 | 0.85 | 0.50 | 0.24 | 0.93 | |||||||||||||
1980 | 0.64 | 0.41 | 0.31 | 0.26 | 0.40 | 0.93 | 0.70 | 0.16 | 0.89 | 0.39 | 0.63 | 0.87 | 0.93 | |||||||||||||
1981 | 0.37 | 0.73 | 0.63 | 0.29 | 0.42 | 0.56 | 1.08 | 0.35 | 0.60 | 0.39 | 0.74 | 1.22 | b | 1.22 | b | |||||||||||
1982 | 1.78 | b | 1.43 | c | 0.25 | p | 0.26 | a | 0.35 | 0.85 | 0.40 | 0.16 | a | 0.80 | 0.88 | a | 0.33 | a | 0.61 | a | ----- | z | ||||
1983 | 0.36 | 0.63 | 0.65 | 0.37 | m | 0.33 | 0.41 | 0.54 | 0.46 | 0.38 | b | 0.44 | 0.54 | 1.19 | 1.19 | o | ||||||||||
1984 | 0.75 | 0.54 | 0.83 | 0.53 | 0.31 | 0.45 | a | 0.46 | 2.04 | 0.28 | 0.26 | 0.68 | a | 0.39 | 2.04 | b | ||||||||||
1985 | 0.08 | 0.38 | 0.32 | 0.26 | 0.42 | a | 0.23 | 0.05 | h | 0.26 | 0.46 | 0.49 | 0.37 | 0.27 | 0.49 | i | ||||||||||
1986 | 0.64 | 0.65 | 0.91 | 0.22 | b | 0.19 | 0.06 | 0.48 | 1.70 | 0.44 | 0.03 | k | 0.76 | e | 0.19 | 1.70 | r | |||||||||
1987 | 0.75 | 0.28 | 0.34 | b | 0.29 | 0.32 | c | 0.85 | 1.43 | 0.05 | a | 0.06 | 0.00 | 0.41 | b | 0.57 | 1.43 | h | ||||||||
1988 | 0.53 | 0.23 | 0.34 | 0.20 | 0.40 | 0.58 | b | 0.00 | 0.17 | 0.38 | d | 0.00 | 0.59 | 0.77 | 0.77 | f | ||||||||||
1989 | 0.80 | 0.72 | 0.46 | 0.40 | 1.18 | b | 0.85 | 0.17 | 1.50 | 0.56 | d | 0.41 | 0.30 | a | 0.14 | 1.50 | g | |||||||||
1990 | 0.65 | 0.30 | 0.64 | a | 1.23 | 0.23 | 0.37 | 0.05 | 0.34 | 0.65 | 0.44 | 0.59 | a | 0.23 | 1.23 | b | ||||||||||
1991 | 0.36 | 0.50 | 0.28 | 0.47 | 1.00 | 0.71 | 0.05 | 0.12 | 0.62 | 0.35 | 0.63 | 0.52 | 1.00 | |||||||||||||
1992 | 0.54 | 0.33 | 0.17 | 0.53 | 0.13 | 0.56 | 0.89 | 0.34 | 0.38 | 0.53 | 0.80 | 0.73 | 0.89 | |||||||||||||
1993 | 0.80 | 0.29 | 0.44 | 0.35 | 0.67 | 0.49 | 0.53 | 0.76 | 0.03 | 0.12 | 0.43 | 0.42 | 0.80 | |||||||||||||
1994 | 0.46 | 0.46 | 0.13 | 0.52 | 0.47 | 0.43 | 0.62 | 0.19 | 0.12 | 0.75 | 0.41 | k | 0.49 | 0.75 | k | |||||||||||
1995 | 0.74 | 0.35 | 0.65 | 0.49 | 0.31 | 0.66 | 0.22 | 0.50 | 0.25 | 0.50 | a | 1.98 | 0.68 | 1.98 | a | |||||||||||
1996 | 0.52 | 0.34 | 0.44 | 0.43 | 0.78 | 0.66 | 0.04 | 0.12 | 0.47 | 0.60 | 2.77 | e | 0.86 | 2.77 | e | |||||||||||
1997 | 0.78 | 0.23 | a | 0.48 | 0.43 | 0.29 | 0.48 | 0.56 | 0.05 | 0.32 | 0.33 | a | 0.47 | 0.41 | 0.78 | b | ||||||||||
1998 | 0.90 | 0.49 | 0.42 | a | 0.10 | 0.64 | d | 0.18 | 0.60 | 0.07 | 0.73 | c | ----- | z | 0.90 | 0.89 | a | ----- | z | |||||||
1999 | 0.57 | 0.62 | 0.53 | f | 0.19 | 0.29 | 0.43 | 0.10 | 0.30 | 0.00 | 0.73 | 0.42 | 0.64 | 0.73 | f | |||||||||||
2000 | 0.79 | 0.45 | 0.51 | 0.48 | 0.41 | 0.48 | 0.28 | 0.00 | 0.25 | 0.58 | 0.24 | i | 0.43 | 0.79 | i | |||||||||||
2001 | 0.28 | 0.12 | 0.43 | c | 0.55 | b | 0.45 | b | 0.46 | n | 0.27 | k | 0.10 | b | 0.44 | a | ----- | z | 0.32 | f | 1.15 | b | ----- | z | ||
2002 | 0.50 | a | 0.10 | c | ----- | z | 0.50 | r | 0.16 | 0.20 | 0.15 | 0.75 | 0.36 | 0.07 | 0.22 | 0.74 | ----- | z | ||||||||
2003 | 0.58 | 0.28 | 0.75 | m | 0.40 | 0.42 | 0.10 | 0.35 | 0.58 | 0.40 | 0.17 | 0.43 | 0.67 | 0.75 | m | |||||||||||
2004 | 0.75 | 0.58 | 0.23 | a | 0.24 | 0.37 | 0.27 | 0.38 | 0.85 | 0.47 | 0.64 | 0.32 | c | 0.44 | 0.85 | d | ||||||||||
2005 | 0.39 | 0.10 | 0.56 | 0.42 | 0.52 | 0.58 | 0.22 | e | 0.00 | 0.04 | y | 0.54 | u | 0.58 | 0.84 | ----- | z | |||||||||
2006 | 0.85 | 0.46 | 0.35 | 0.40 | 0.36 | 0.43 | 0.18 | 0.31 | 0.26 | 0.58 | x | 0.48 | 0.46 | q | ----- | z | ||||||||||
2007 | 0.67 | 0.48 | 0.17 | 0.47 | 0.33 | 0.90 | 0.25 | 0.56 | 0.30 | 0.62 | b | 1.86 | 0.47 | 1.86 | b | |||||||||||
2008 | 1.15 | m | 0.42 | o | 0.41 | q | 0.18 | 0.12 | l | 0.23 | p | 0.00 | 0.15 | 0.21 | 0.39 | 0.64 | 1.18 | ----- | z | |||||||
2009 | 0.44 | 0.22 | 0.88 | 0.64 | 0.48 | ----- | z | ----- | z | ----- | z | 0.00 | 0.57 | 0.40 | 1.66 | ----- | z | |||||||||
2010 | 0.83 | 0.61 | 0.36 | 0.88 | 0.44 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.82 | 0.68 | ----- | z | |||||||
2011 | 0.46 | w | 0.44 | n | 0.48 | c | 0.41 | l | 0.52 | 0.36 | 0.22 | 0.00 | 0.00 | 0.31 | 0.22 | 0.12 | ----- | z | ||||||||
2012 | 0.53 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.64 | 0.48 | 0.45 | 0.42 | 0.42 | 0.48 | 0.31 | 0.35 | 0.37 | 0.49 | 0.62 | 0.69 | 1.07 | |||||||||||||
S.D. | 0.27 | 0.24 | 0.22 | 0.25 | 0.25 | 0.29 | 0.27 | 0.36 | 0.26 | 0.34 | 0.41 | 0.40 | 0.34 | |||||||||||||
SKEW | 1.13 | 1.33 | 0.84 | 2.02 | 1.28 | 0.64 | 1.37 | 2.32 | 0.75 | 1.21 | 2.57 | 1.71 | 1.17 | |||||||||||||
MAX | 1.78 | 1.43 | 1.06 | 1.62 | 1.20 | 1.20 | 1.43 | 2.04 | 1.17 | 1.62 | 2.77 | 2.59 | 2.04 | |||||||||||||
MIN | 0.08 | 0.06 | 0.07 | 0.10 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.12 | 0.54 | |||||||||||||
YRS | 83 | 82 | 80 | 84 | 87 | 83 | 83 | 84 | 83 | 78 | 83 | 86 | 42 |