YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1920 | ----- | z | ----- | z | ----- | z | 0.97 | 0.75 | 0.21 | 0.04 | 1.25 | 0.47 | 0.34 | 0.29 | 0.35 | ----- | z | |||||||||
1921 | 0.65 | 0.55 | 0.35 | 0.55 | 0.60 | ----- | z | 0.09 | 0.24 | 0.30 | 0.18 | 2.15 | 0.49 | ----- | z | |||||||||||
1922 | 0.40 | 0.61 | 0.25 | 0.30 | 0.42 | 0.35 | 0.00 | 0.15 | 0.07 | 0.34 | 0.24 | 0.79 | 0.79 | |||||||||||||
1923 | 0.76 | p | 0.35 | 0.62 | 0.20 | 0.40 | 0.50 | 0.40 | 0.52 | 0.25 | 0.45 | 0.31 | 0.50 | 0.76 | p | |||||||||||
1924 | 0.20 | 0.22 | 0.33 | 0.20 | 0.00 | 0.64 | 0.03 | 0.19 | 0.03 | 0.50 | 0.61 | 0.54 | 0.64 | |||||||||||||
1925 | 0.90 | 0.40 | 0.65 | 0.44 | 0.25 | 0.23 | 0.47 | 0.58 | 0.31 | 0.16 | 0.16 | 1.06 | 1.06 | |||||||||||||
1926 | 0.44 | 0.70 | 0.37 | 0.67 | 0.23 | 0.27 | 0.18 | 0.72 | 0.12 | 0.13 | 0.65 | 0.32 | 0.72 | |||||||||||||
1927 | 0.36 | 0.50 | 0.52 | 0.32 | 0.38 | 0.58 | r | 0.17 | 0.26 | 0.61 | r | 0.51 | 0.63 | 0.20 | ----- | z | ||||||||||
1928 | 0.28 | 0.22 | 0.48 | 0.26 | 0.10 | 0.23 | p | 0.28 | 0.00 | 0.20 | 0.38 | 0.20 | 0.30 | 0.48 | p | |||||||||||
1929 | 0.70 | 0.14 | a | 0.71 | 0.48 | 0.70 | 0.70 | 0.00 | 0.34 | 0.39 | 0.20 | 0.20 | 0.93 | 0.93 | a | |||||||||||
1930 | 0.40 | 0.42 | 0.14 | 0.93 | 0.54 | 0.34 | 0.12 | 0.26 | 0.32 | 0.68 | 0.70 | 0.17 | 0.93 | |||||||||||||
1931 | 0.78 | 0.23 | a | 1.08 | 0.31 | 0.61 | 0.56 | 0.00 | 0.13 | 0.17 | 0.41 | 0.53 | 0.88 | 1.08 | a | |||||||||||
1932 | 0.61 | 0.46 | 0.90 | 0.20 | 0.43 | 0.46 | 0.26 | 0.08 | 0.13 | 0.15 | 0.56 | 0.43 | 0.90 | |||||||||||||
1933 | 1.10 | 0.31 | 0.40 | 0.38 | 0.36 | 0.91 | 0.01 | 0.34 | 0.28 | 0.64 | 0.32 | 0.71 | 1.10 | |||||||||||||
1934 | 0.32 | 0.22 | 0.34 | 0.54 | 0.22 | 0.96 | 0.18 | 0.00 | 0.40 | 1.54 | 0.34 | 0.96 | 1.54 | |||||||||||||
1935 | 0.42 | 0.17 | 0.38 | a | 0.62 | 0.92 | 0.10 | 0.64 | 0.13 | 0.03 | 0.45 | 0.24 | 0.38 | 0.92 | a | |||||||||||
1936 | 0.82 | k | 0.56 | 0.36 | 0.92 | 0.64 | 0.48 | 0.25 | 0.08 | 0.42 | 0.14 | 0.00 | 1.26 | a | 1.26 | l | ||||||||||
1937 | 0.52 | 0.50 | 0.46 | 0.48 | a | 0.11 | 0.64 | 0.38 | 0.12 | 0.08 | 0.78 | 0.70 | 1.30 | 1.30 | a | |||||||||||
1938 | 0.65 | 0.65 | 0.70 | 0.34 | 0.08 | 0.58 | 1.00 | 0.15 | 0.24 | 0.38 | 0.38 | 0.54 | 1.00 | |||||||||||||
1939 | 0.45 | 0.64 | 0.34 | 0.11 | 0.62 | 0.33 | 0.20 | 0.11 | 0.46 | 0.37 | 0.02 | 0.46 | 0.64 | |||||||||||||
1940 | 0.34 | 0.74 | 0.44 | 0.26 | 0.28 | 0.22 | 0.54 | 0.00 | 0.78 | 1.10 | r | 0.71 | 0.54 | a | 1.10 | s | ||||||||||
1941 | 0.55 | 0.60 | 0.11 | 0.62 | 0.55 | 1.57 | 0.30 | 0.73 | 0.52 | 0.62 | 0.63 | a | 1.98 | 1.98 | a | |||||||||||
1942 | 0.30 | 0.32 | 0.22 | 0.47 | 0.75 | 0.79 | 0.46 | 0.30 | 0.31 | 0.27 | 0.86 | 0.49 | 0.86 | |||||||||||||
1943 | 0.94 | 0.45 | 0.29 | 0.59 | 0.26 | 0.49 | 0.13 | 0.52 | 0.00 | 0.46 | 0.71 | 0.60 | 0.94 | |||||||||||||
1944 | 0.23 | 0.32 | 0.32 | 0.31 | 0.48 | 1.23 | 0.31 | 0.00 | 0.25 | 0.50 | 0.92 | 0.23 | 1.23 | |||||||||||||
1945 | 0.90 | 0.80 | 0.27 | 0.35 | 0.48 | 0.34 | 0.03 | 0.60 | 0.30 | 0.15 | 1.40 | 0.82 | 1.40 | |||||||||||||
1946 | 0.55 | 0.50 | a | 0.39 | 0.15 | 0.99 | 0.48 | 0.76 | 0.37 | 0.18 | 0.48 | 0.85 | 0.56 | 0.99 | a | |||||||||||
1947 | 0.31 | 0.31 | 0.62 | 0.41 | 0.28 | 0.66 | 0.70 | 0.78 | 0.11 | 2.36 | 0.37 | 0.43 | 2.36 | |||||||||||||
1948 | 0.94 | 0.49 | 0.57 | 0.66 | 0.44 | 0.59 | 0.22 | 0.93 | ----- | z | 0.40 | 0.71 | 1.13 | ----- | z | |||||||||||
1949 | 0.17 | 0.62 | 0.17 | a | 0.23 | 0.65 | 0.25 | 0.12 | 0.20 | 0.19 | 0.22 | 0.60 | 0.40 | 0.65 | a | |||||||||||
1950 | 0.63 | 0.64 | 0.46 | 0.34 | 0.14 | 0.71 | 0.28 | 0.19 | 0.10 | 0.70 | 0.53 | 0.33 | 0.71 | |||||||||||||
1951 | 0.51 | 0.30 | 0.40 | 0.23 | 0.64 | 0.36 | 0.14 | 0.36 | 0.04 | 0.39 | 0.42 | 0.62 | 0.64 | |||||||||||||
1952 | 0.95 | 0.41 | 0.25 | 0.79 | 0.99 | 0.67 | 0.27 | 0.32 | 0.17 | 0.00 | 0.42 | 0.80 | 0.99 | |||||||||||||
1953 | 0.51 | 0.43 | 1.06 | 0.47 | 0.84 | 0.40 | 0.00 | 0.36 | 0.05 | 0.36 | a | 0.85 | 0.68 | 1.06 | a | |||||||||||
1954 | 0.85 | 0.28 | 0.28 | 0.36 | 0.18 | 0.55 | 0.36 | 0.21 | 0.20 | 0.24 | 0.47 | 0.41 | 0.85 | |||||||||||||
1955 | 0.19 | 0.23 | 0.52 | 0.71 | 0.58 | 0.29 | 0.33 | 0.00 | 0.27 | 0.56 | 0.83 | 1.32 | a | 1.32 | a | |||||||||||
1956 | 0.78 | 0.70 | 0.33 | 0.40 | 0.92 | 0.64 | 0.29 | 0.42 | 0.15 | 0.55 | 0.39 | 0.67 | 0.92 | |||||||||||||
1957 | 0.52 | a | 0.51 | 0.31 | 0.42 | 0.71 | 0.56 | 0.16 | 0.12 | 0.05 | 0.87 | 0.46 | 1.20 | 1.20 | a | |||||||||||
1958 | 0.64 | 0.85 | 0.58 | 0.53 | 0.42 | 0.71 | 0.33 | 0.17 | 0.46 | 0.62 | 0.62 | 0.66 | 0.85 | |||||||||||||
1959 | 0.46 | 0.28 | 0.32 | 0.19 | 0.39 | 0.32 | 0.17 | 0.39 | 1.13 | 0.33 | 0.74 | 0.63 | 1.13 | |||||||||||||
1960 | 0.78 | 0.54 | 0.42 | 0.41 | 0.67 | 0.31 | 0.52 | 0.36 | 0.64 | 0.22 | 0.88 | 0.42 | 0.88 | |||||||||||||
1961 | 0.29 | 0.49 | 0.49 | 0.22 | 0.52 | 0.44 | 0.09 | 0.92 | 0.29 | 0.23 | 0.70 | 0.70 | 0.92 | |||||||||||||
1962 | 0.48 | 0.28 | 0.34 | 0.34 | 1.12 | 0.15 | 0.11 | 0.18 | 0.58 | 1.28 | 0.39 | 0.29 | 1.28 | |||||||||||||
1963 | 0.21 | 0.67 | 0.59 | 0.68 | 0.57 | 0.24 | 0.66 | 0.09 | 0.73 | 0.24 | 0.82 | 0.32 | 0.82 | |||||||||||||
1964 | 0.88 | 0.24 | 0.29 | 0.19 | 0.47 | 0.43 | 0.45 | 0.13 | 0.29 | 0.15 | 0.53 | 2.15 | 2.15 | |||||||||||||
1965 | 1.02 | 0.34 | 0.36 | 0.40 | 0.27 | 0.36 | 0.42 | 0.75 | 0.28 | 0.08 | 0.58 | 0.38 | 1.02 | |||||||||||||
1966 | 1.11 | 0.30 | 0.42 | 0.19 | 0.18 | 0.19 | 0.74 | 0.09 | 0.79 | 0.53 | 0.73 | 1.13 | 1.13 | |||||||||||||
1967 | 0.41 | 0.23 | 0.69 | 0.39 | 0.33 | 0.42 | 0.13 | 0.09 | 0.24 | 1.14 | 0.30 | 0.48 | 1.14 | |||||||||||||
1968 | 0.87 | 0.41 | 0.17 | 0.09 | 0.38 | ----- | z | 0.13 | 0.63 | 0.24 | 1.55 | 1.38 | 0.74 | ----- | z | |||||||||||
1969 | 0.61 | 0.37 | 0.14 | 0.64 | 1.08 | 1.13 | 0.37 | 0.00 | 0.12 | 0.42 | 0.36 | 0.71 | 1.13 | |||||||||||||
1970 | 0.61 | 0.39 | 0.98 | 0.10 | 1.36 | 0.39 | 0.49 | 0.00 | 1.38 | 0.33 | 0.82 | 0.57 | 1.38 | |||||||||||||
1971 | 0.86 | 0.42 | 0.42 | 0.72 | 0.76 | 0.63 | 0.33 | 0.13 | 0.32 | 0.36 | 0.65 | 0.93 | 0.93 | |||||||||||||
1972 | 0.48 | 0.37 | 0.77 | 0.26 | 0.27 | 1.48 | 0.30 | 0.90 | 0.48 | 0.13 | 0.79 | 0.44 | 1.48 | |||||||||||||
1973 | 0.23 | 0.49 | 0.20 | 0.24 | 0.58 | 0.17 | 0.05 | 0.35 | 0.32 | 0.19 | 1.00 | 0.49 | d | 1.00 | d | |||||||||||
1974 | 0.69 | 0.51 | 0.93 | 0.47 | 0.76 | 0.58 | 0.60 | 0.10 | 0.00 | 0.64 | 0.35 | 0.71 | 0.93 | |||||||||||||
1975 | 0.64 | 0.80 | 0.49 | 0.42 | 0.19 | 0.63 | c | 0.27 | 0.28 | 0.08 | 0.83 | 0.36 | i | 0.62 | 0.83 | l | ||||||||||
1976 | 0.73 | 0.43 | 0.25 | 0.35 | 0.20 | 0.29 | 0.56 | 0.71 | 0.35 | 0.15 | 0.18 | 0.14 | 0.73 | |||||||||||||
1977 | 0.14 | 0.37 | 0.18 | 0.29 | 0.45 | 1.40 | 0.21 | 0.24 | 0.31 | 0.40 | 0.87 | 0.57 | 1.40 | |||||||||||||
1978 | 0.41 | 0.47 | 0.40 | 0.94 | 0.47 | 0.20 | 0.86 | 0.53 | 0.69 | 0.00 | 0.59 | 0.79 | 0.94 | |||||||||||||
1979 | 0.36 | 0.64 | 0.44 | 0.18 | 0.52 | 1.38 | c | 0.92 | 0.56 | 0.47 | 0.52 | 0.49 | 0.69 | 1.38 | c | |||||||||||
1980 | 0.81 | 0.32 | 0.34 | 1.17 | 0.71 | 0.88 | 0.41 | 0.10 | 1.18 | 0.44 | 0.63 | 1.09 | 1.18 | |||||||||||||
1981 | 0.65 | 0.64 | 0.76 | 0.42 | 0.48 | 0.60 | 0.65 | 0.19 | 0.15 | 0.23 | 0.34 | 0.66 | 0.76 | |||||||||||||
1982 | 1.43 | 0.50 | 0.36 | 0.41 | 0.58 | t | 0.99 | 1.22 | 0.31 | 0.38 | 0.50 | a | 0.31 | 0.91 | 1.43 | u | ||||||||||
1983 | 0.60 | 0.74 | 0.73 | 0.55 | 0.54 | 0.47 | 0.51 | h | 0.69 | 0.31 | 0.22 | 0.85 | a | 0.81 | 0.85 | i | ||||||||||
1984 | 1.10 | 0.57 | 0.65 | 0.42 | e | 0.72 | 0.64 | 0.48 | 2.56 | 0.15 | 0.49 | 1.29 | d | 0.36 | 2.56 | i | ||||||||||
1985 | 0.09 | 0.25 | 0.41 | 0.19 | 0.49 | 0.61 | 0.81 | 0.42 | 0.87 | l | 0.60 | 1.26 | 0.33 | 1.26 | l | |||||||||||
1986 | 0.60 | 1.10 | 0.39 | 0.40 | 0.60 | 0.39 | 0.27 | 0.16 | 0.41 | 0.32 | 1.00 | 0.14 | a | 1.10 | a | |||||||||||
1987 | 0.42 | 0.46 | 0.45 | 0.30 | 0.53 | 0.65 | 0.71 | 0.16 | 0.00 | 0.00 | 0.46 | a | 0.57 | 0.71 | a | |||||||||||
1988 | 0.42 | 0.52 | 0.98 | 0.35 | 0.55 | 0.81 | 0.06 | 0.16 | 0.32 | 0.06 | 1.84 | 0.61 | r | 1.84 | r | |||||||||||
1989 | 1.05 | 0.50 | 0.51 | 0.44 | 0.99 | 0.82 | 0.23 | 1.41 | e | 0.50 | 0.43 | 0.27 | q | 0.13 | 1.41 | v | ||||||||||
1990 | 0.65 | 0.37 | 0.33 | 1.20 | 0.48 | 0.45 | 0.33 | 0.80 | 0.00 | 0.52 | f | 0.90 | 0.36 | 1.20 | f | |||||||||||
1991 | 0.38 | 0.17 | 1.18 | h | 0.22 | 1.21 | 0.64 | 0.34 | 0.14 | 0.23 | 0.21 | 0.58 | 0.32 | 1.21 | h | |||||||||||
1992 | 0.48 | 0.34 | 0.39 | 0.24 | 0.21 | 1.01 | 0.72 | 0.12 | 0.22 | 1.03 | i | 0.65 | 0.42 | 1.03 | i | |||||||||||
1993 | 0.80 | 0.25 | 0.59 | h | 0.21 | 0.39 | 1.00 | 0.25 | 2.35 | h | 0.00 | 0.17 | j | 0.27 | 0.69 | ----- | z | |||||||||
1994 | 0.35 | 0.55 | 0.19 | 0.29 | 0.55 | 0.19 | 0.52 | 0.04 | 0.42 | d | 0.45 | b | 0.92 | 0.22 | 0.92 | f | ||||||||||
1995 | 0.35 | 0.39 | 1.01 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.05 | 0.30 | 1.69 | 1.12 | ----- | z | ||||||
1996 | 0.32 | 0.44 | 0.21 | 0.99 | 0.52 | 0.33 | 0.15 | 0.39 | 0.19 | 0.52 | 1.41 | 1.18 | 1.41 | |||||||||||||
1997 | 1.38 | 0.59 | ----- | z | 0.45 | 0.31 | 0.41 | 1.34 | 0.53 | 0.15 | 0.45 | 0.18 | 0.29 | ----- | z | |||||||||||
1998 | 0.61 | 0.37 | 0.38 | s | 0.70 | 1.16 | 0.69 | 1.10 | 0.32 | 0.67 | 0.16 | 0.83 | 0.67 | 1.16 | s | |||||||||||
1999 | 0.60 | 0.47 | 0.22 | 0.15 | 0.20 | 0.23 | 0.04 | 0.37 | 0.00 | 1.24 | 1.03 | 0.39 | 1.24 | |||||||||||||
2000 | 0.69 | 0.57 | 0.63 | 0.26 | 0.22 | 0.55 | 0.23 | 0.01 | 0.55 | 0.76 | 0.28 | 0.22 | 0.76 | |||||||||||||
2001 | 0.51 | 0.17 | 0.25 | 0.44 | 0.40 | 0.56 | ----- | z | ----- | z | 0.37 | 0.70 | 0.80 | 0.60 | ----- | z | ||||||||||
2002 | 0.81 | 0.31 | 0.67 | 0.37 | 0.17 | 0.19 | 0.74 | 0.40 | 0.35 | 0.12 | 0.61 | 0.69 | 0.81 | |||||||||||||
2003 | 0.44 | 0.64 | 0.45 | 0.56 | 0.52 | 0.54 | 0.41 | 0.88 | 0.15 | 0.15 | 0.51 | 0.70 | 0.88 | |||||||||||||
2004 | 0.58 | 0.67 | 0.13 | 0.13 | 0.52 | 0.61 | 0.61 | 0.23 | 0.41 | 0.92 | 0.32 | 0.77 | 0.92 | |||||||||||||
2005 | 0.35 | 0.24 | 0.68 | 0.46 | 0.54 | 0.26 | 0.23 | 0.00 | 0.11 | 0.63 | 0.54 | 0.80 | 0.80 | |||||||||||||
2006 | 0.58 | 0.84 | 0.28 | 0.37 | 0.83 | 0.39 | 0.23 | 0.31 | ----- | z | 0.19 | 0.74 | g | 1.20 | d | ----- | z | |||||||||
2007 | 0.30 | 0.24 | a | 0.24 | c | 0.22 | 0.22 | 0.37 | 0.29 | 0.23 | 0.41 | 1.39 | 0.51 | c | 1.16 | i | 1.39 | p | ||||||||
2008 | 0.35 | c | 0.51 | b | 0.24 | e | 0.37 | 1.42 | 0.42 | 0.56 | 0.19 | 0.42 | 0.35 | 0.95 | b | 0.43 | 1.42 | l | ||||||||
2009 | 1.12 | 0.33 | 0.78 | 0.51 | 0.48 | 1.35 | 0.20 | 1.26 | 0.02 | 1.21 | 0.28 | 0.44 | 1.35 | |||||||||||||
2010 | 0.49 | 0.33 | 0.31 | 1.27 | 0.75 | 0.84 | p | 0.20 | o | 0.14 | q | 0.37 | o | ----- | z | ----- | z | ----- | z | ----- | z | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.59 | 0.45 | 0.45 | 0.44 | 0.53 | 0.56 | 0.37 | 0.37 | 0.31 | 0.48 | 0.65 | 0.65 | 1.07 | |||||||||||||
S.D. | 0.28 | 0.18 | 0.22 | 0.25 | 0.29 | 0.32 | 0.29 | 0.39 | 0.26 | 0.39 | 0.38 | 0.37 | 0.34 | |||||||||||||
SKEW | 0.72 | 0.68 | 0.95 | 1.32 | 0.81 | 1.22 | 1.13 | 2.67 | 1.67 | 2.06 | 1.33 | 1.51 | 1.64 | |||||||||||||
MAX | 1.43 | 1.10 | 1.08 | 1.27 | 1.42 | 1.57 | 1.34 | 2.56 | 1.38 | 2.36 | 2.15 | 2.15 | 2.36 | |||||||||||||
MIN | 0.09 | 0.14 | 0.11 | 0.09 | 0.00 | 0.10 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.13 | 0.64 | |||||||||||||
YRS | 88 | 90 | 85 | 90 | 89 | 85 | 87 | 87 | 86 | 86 | 87 | 88 | 62 |