YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.66 | ----- | z | ----- | z | ----- | z | 0.21 | ----- | z | 0.50 | ----- | z | |||
1930 | 0.40 | 0.32 | 0.76 | 0.51 | 0.90 | 0.24 | 0.00 | 0.15 | 0.28 | 0.32 | 0.18 | 0.00 | 0.90 | |||||||||||||
1931 | 0.42 | 0.43 | 0.42 | 0.40 | 0.31 | 0.64 | 0.03 | 0.00 | 0.20 | 0.30 | 0.35 | 0.30 | 0.64 | |||||||||||||
1932 | 0.25 | 0.08 | 0.65 | 0.55 | 0.70 | 2.00 | 0.70 | 0.07 | 0.00 | 0.43 | 0.25 | 0.50 | 2.00 | |||||||||||||
1933 | 0.25 | 0.20 | 0.26 | 0.43 | 0.15 | 0.00 | 0.00 | 0.00 | 0.48 | 0.40 | 0.70 | 0.30 | 0.70 | |||||||||||||
1934 | 0.43 | 0.95 | 0.20 | 0.10 | 0.08 | 0.78 | 0.18 | 0.02 | 0.14 | 0.70 | 0.31 | 0.53 | 0.95 | |||||||||||||
1935 | 0.30 | 0.68 | 0.28 | 0.40 | 0.69 | 0.00 | 0.00 | 0.15 | 0.00 | 0.15 | 0.20 | 0.37 | 0.69 | |||||||||||||
1936 | 0.50 | 0.35 | a | 0.20 | 0.60 | 0.30 | 0.47 | 0.44 | 0.10 | 0.19 | 0.00 | 0.00 | 0.15 | a | 0.60 | b | ||||||||||
1937 | 0.10 | 0.40 | 0.28 | 0.26 | 0.65 | 0.44 | 0.10 | 0.00 | 0.15 | 0.17 | 1.15 | 0.90 | 1.15 | |||||||||||||
1938 | 0.32 | 0.62 | 0.44 | 0.38 | 0.38 | 0.15 | 0.30 | 0.10 | 0.10 | 0.42 | 0.36 | 0.55 | 0.62 | |||||||||||||
1939 | 0.20 | a | 0.40 | 0.32 | 0.10 | 0.14 | 0.36 | 0.12 | ----- | z | 0.55 | 0.60 | 0.30 | 0.30 | ----- | z | ||||||||||
1940 | 0.46 | 0.42 | 0.30 | 0.86 | 0.20 | 0.27 | 0.08 | 0.00 | 1.44 | 1.10 | 0.56 | 0.50 | 1.44 | |||||||||||||
1941 | 0.25 | 0.32 | 0.23 | 0.54 | 0.32 | 0.50 | 0.19 | 0.10 | 0.25 | 0.95 | 0.40 | 0.41 | 0.95 | |||||||||||||
1942 | 0.40 | 0.45 | 0.04 | 0.42 | 0.47 | a | 0.23 | 0.02 | 0.09 | 0.13 | 0.42 | 0.49 | 0.37 | 0.49 | a | |||||||||||
1943 | 0.30 | 0.10 | 0.48 | 0.75 | 0.62 | 0.40 | 0.06 | 0.15 | 0.00 | 0.18 | 0.22 | 0.28 | 0.75 | |||||||||||||
1944 | 0.25 | 0.28 | 0.19 | 0.38 | 0.75 | 0.92 | 0.18 | 0.00 | 0.46 | 0.04 | 0.31 | 0.30 | 0.92 | |||||||||||||
1945 | 0.35 | a | 0.48 | 0.60 | 0.24 | 0.40 | 0.40 | 0.00 | 0.18 | 0.30 | 0.56 | 0.41 | 0.81 | 0.81 | a | |||||||||||
1946 | 0.18 | 0.15 | 0.35 | 0.12 | 0.30 | 0.30 | 0.03 | 0.06 | 0.31 | 0.27 | 0.40 | 0.17 | 0.40 | |||||||||||||
1947 | 0.19 | 0.34 | 0.30 | 0.45 | 0.22 | 0.56 | 0.00 | 0.06 | 0.42 | 0.54 | 0.26 | 0.20 | 0.56 | |||||||||||||
1948 | 0.20 | 0.22 | 0.39 | 0.27 | 0.46 | 0.45 | 0.20 | 0.14 | 0.12 | 0.20 | 0.52 | 0.53 | 0.53 | |||||||||||||
1949 | 0.10 | 0.25 | 0.15 | 0.20 | 0.88 | 0.18 | 0.08 | 0.02 | 0.68 | 0.28 | 0.28 | 0.30 | 0.88 | |||||||||||||
1950 | 0.45 | 0.48 | 0.47 | 0.27 | 0.57 | 0.45 | a | 0.04 | a | 0.14 | a | 0.58 | 0.18 | 0.42 | 0.90 | a | 0.90 | d | ||||||||
1951 | 0.50 | 0.96 | 0.20 | 0.50 | 0.50 | 0.40 | 0.49 | 0.00 | 0.00 | 0.37 | 0.44 | 0.60 | 0.96 | |||||||||||||
1952 | 0.40 | 0.35 | 0.42 | b | 0.57 | 0.68 | 0.38 | 1.10 | 0.00 | 0.64 | 0.00 | 0.34 | a | 0.29 | 1.10 | c | ||||||||||
1953 | 0.57 | 0.19 | 0.29 | 0.32 | 1.32 | c | 0.52 | a | 0.00 | 0.24 | 0.00 | 0.10 | 0.38 | 0.31 | 1.32 | d | ||||||||||
1954 | 0.32 | 0.22 | 0.41 | 0.23 | 0.15 | 0.28 | 0.02 | 0.06 | 0.09 | 0.35 | 0.19 | 0.36 | 0.41 | |||||||||||||
1955 | 0.25 | 0.93 | 0.22 | 0.31 | 0.31 | a | 0.41 | 0.29 | 0.00 | 0.15 | 0.16 | 0.30 | 2.03 | 2.03 | a | |||||||||||
1956 | 0.67 | 0.13 | 0.20 | 1.22 | 0.64 | 0.12 | 0.18 | 0.00 | 0.00 | a | 0.75 | 0.12 | d | 0.45 | 1.22 | e | ||||||||||
1957 | 0.45 | 0.29 | 0.50 | 0.20 | a | 0.65 | 0.46 | 0.09 | 0.08 | 0.11 | a | 0.55 | b | 0.40 | a | 0.80 | b | 0.80 | g | |||||||
1958 | 0.55 | d | 0.45 | a | 0.18 | 0.46 | 0.72 | 0.47 | 0.29 | 0.25 | 0.18 | 0.16 | 0.41 | 0.25 | 0.72 | e | ||||||||||
1959 | 0.23 | 0.24 | 0.32 | 0.13 | 0.41 | 0.15 | 0.05 | 0.00 | b | 1.28 | 0.60 | 0.02 | 0.40 | 1.28 | b | |||||||||||
1960 | 0.60 | 0.80 | 0.35 | 0.15 | 0.55 | 0.00 | 0.05 | 0.32 | 0.51 | 0.25 | 0.76 | 0.35 | 0.80 | |||||||||||||
1961 | 0.20 | 0.45 | 0.70 | 0.13 | 0.28 | 0.07 | 0.15 | 0.67 | 0.38 | 0.33 | 0.17 | 0.40 | 0.70 | |||||||||||||
1962 | 0.60 | b | 0.27 | 0.90 | 0.55 | 0.47 | 0.13 | 0.06 | 0.15 | 0.06 | 0.90 | 0.36 | 0.30 | 0.90 | b | |||||||||||
1963 | 0.55 | 0.28 | 0.20 | 0.72 | 0.36 | 0.42 | 0.13 | 0.13 | 0.30 | 0.39 | 0.49 | 0.42 | 0.72 | |||||||||||||
1964 | 0.45 | 0.10 | 0.15 | 0.68 | k | 1.10 | 0.56 | 0.06 | 0.83 | 0.41 | 0.40 | 0.48 | 0.84 | 1.10 | k | |||||||||||
1965 | 0.63 | 0.02 | 0.04 | 0.27 | 0.93 | 0.80 | 0.00 | 0.33 | 0.05 | 0.26 | 0.34 | 0.25 | 0.93 | |||||||||||||
1966 | 0.20 | 0.26 | 0.19 | 0.33 | 0.10 | 0.19 | 0.00 | 0.30 | 0.21 | 0.18 | 0.71 | 0.50 | 0.71 | |||||||||||||
1967 | 0.95 | 0.25 | 0.28 | 0.60 | 1.05 | 0.58 | 0.50 | 0.03 | 0.33 | 0.28 | a | 0.85 | 0.23 | 1.05 | a | |||||||||||
1968 | 0.25 | 0.44 | 0.16 | 0.51 | 0.56 | 0.30 | 0.03 | 0.89 | 0.01 | 0.48 | 0.70 | 1.05 | e | 1.05 | e | |||||||||||
1969 | 0.85 | 0.28 | 0.14 | 0.88 | 0.28 | 0.35 | 0.15 | 0.00 | ----- | z | 0.30 | 0.18 | 0.45 | ----- | z | |||||||||||
1970 | 0.56 | a | 0.49 | 0.49 | c | 0.70 | 0.82 | 0.83 | 0.32 | 0.06 | 0.58 | 0.40 | 0.83 | 0.36 | 0.83 | d | ||||||||||
1971 | 0.46 | 0.36 | 0.71 | b | 0.18 | a | 0.47 | 0.72 | 0.20 | 0.19 | 2.00 | a | 0.24 | 0.68 | 0.49 | 2.00 | d | |||||||||
1972 | 0.85 | ----- | z | 0.65 | 0.34 | 1.05 | 0.92 | 0.00 | 0.10 | 0.68 | 0.45 | 0.53 | 0.39 | ----- | z | |||||||||||
1973 | 0.25 | 0.18 | 0.75 | 1.00 | 0.31 | b | 0.26 | 0.00 | 0.26 | 0.62 | 0.50 | 0.75 | 0.70 | c | 1.00 | e | ||||||||||
1974 | 0.16 | a | 0.28 | 0.62 | a | 0.74 | 0.10 | 0.17 | 0.30 | 0.00 | 0.00 | 0.32 | 0.50 | 0.50 | 0.74 | b | ||||||||||
1975 | 0.70 | f | 0.38 | f | 0.65 | f | 0.46 | a | 0.22 | 0.32 | a | 1.08 | 1.23 | e | 0.00 | 1.57 | a | 0.21 | e | 0.37 | ----- | z | ||||
1976 | 0.80 | k | 0.35 | 0.16 | 0.45 | 0.12 | 0.85 | 0.55 | 1.20 | 0.75 | 0.19 | 0.16 | 0.04 | 1.20 | k | |||||||||||
1977 | 0.21 | 0.18 | 0.20 | 0.16 | 0.29 | 0.14 | 0.46 | 0.20 | 0.48 | 0.12 | 0.28 | 0.38 | 0.48 | |||||||||||||
1978 | 0.48 | 0.43 | 0.40 | 0.67 | 0.10 | 0.35 | 0.37 | 0.43 | 0.68 | 0.00 | 0.87 | 0.29 | 0.87 | |||||||||||||
1979 | 0.85 | 0.39 | 0.40 | 0.57 | 0.22 | 0.35 | 0.00 | 1.80 | 0.02 | 0.54 | 0.28 | 0.12 | 1.80 | |||||||||||||
1980 | 0.34 | 0.33 | 0.19 | 0.14 | 0.38 | 0.34 | 0.36 | 0.00 | 0.41 | 0.36 | 0.28 | 0.36 | 0.41 | |||||||||||||
1981 | 0.38 | 0.31 | 1.06 | d | 1.28 | 0.56 | 0.64 | 0.41 | 0.05 | 0.30 | 0.65 | 0.69 | 0.80 | 1.28 | d | |||||||||||
1982 | 0.34 | c | 0.33 | e | 0.23 | t | 0.53 | r | ----- | z | 1.34 | a | 1.04 | 0.06 | a | 0.51 | a | 0.95 | i | 0.87 | f | 0.18 | g | ----- | z | |
1983 | 0.39 | b | 0.44 | 0.39 | 0.37 | a | 0.70 | 0.52 | a | 0.40 | 0.38 | a | 0.10 | 0.46 | b | 0.66 | d | 0.60 | d | 0.70 | o | |||||
1984 | 1.45 | c | 0.33 | 1.40 | w | 0.58 | i | 1.10 | 0.45 | b | 0.08 | 0.73 | d | 0.14 | 0.65 | d | 0.90 | l | 1.04 | ----- | z | |||||
1985 | 0.06 | 0.24 | 0.30 | c | 0.40 | 0.27 | e | 0.18 | c | 1.93 | c | 0.00 | 0.41 | 0.27 | 0.70 | d | 0.36 | g | 1.93 | y | ||||||
1986 | 0.32 | g | 1.30 | q | 0.55 | a | 0.45 | c | 0.45 | a | 0.13 | 0.00 | 0.11 | 0.48 | b | 0.26 | 0.35 | 0.55 | d | ----- | z | |||||
1987 | 0.21 | 0.44 | a | 0.47 | b | 0.21 | b | 1.65 | a | 0.31 | 0.22 | 0.11 | 0.00 | 0.10 | 0.31 | a | 0.22 | a | 1.65 | h | ||||||
1988 | 0.53 | 0.21 | c | 0.35 | c | 0.56 | d | 0.21 | 0.27 | 0.00 | 0.01 | 0.26 | a | 0.00 | 0.56 | f | ----- | z | ----- | z | ||||||
1989 | ----- | z | ----- | z | ----- | z | 0.62 | 0.26 | 0.10 | 0.00 | 0.30 | 0.62 | 0.35 | 0.09 | 0.00 | ----- | z | |||||||||
1990 | 0.04 | c | 2.20 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.12 | 0.25 | ----- | z | ||
1991 | 0.02 | 0.02 | 0.10 | d | 0.26 | 1.09 | 0.22 | o | ----- | z | 0.09 | o | ----- | z | 0.36 | 0.25 | a | ----- | z | ----- | z | |||||
1992 | ----- | z | ----- | z | 0.19 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.32 | ----- | z | |
1994 | 0.31 | 0.43 | 0.09 | 0.37 | 0.99 | 0.36 | 0.00 | 0.00 | 0.03 | 0.43 | 0.45 | 0.37 | 0.99 | |||||||||||||
1995 | 0.97 | c | 0.28 | 0.33 | 0.36 | 0.49 | 0.66 | 0.47 | 0.14 | 0.00 | 0.23 | 0.55 | 0.61 | 0.97 | c | |||||||||||
1996 | 0.35 | 0.52 | 0.31 | 0.35 | 0.81 | 0.16 | 0.00 | 0.53 | 0.41 | 0.49 | 0.42 | 1.54 | e | 1.54 | e | |||||||||||
1997 | 0.94 | 0.12 | 0.12 | 0.45 | 0.24 | 0.72 | 0.12 | 0.22 | 0.27 | 0.19 | 0.33 | 0.13 | 0.94 | |||||||||||||
1998 | 0.45 | 0.31 | 0.42 | 0.12 | 1.23 | 0.74 | 0.19 | 0.00 | 0.48 | 0.05 | 0.34 | 0.72 | a | 1.23 | a | |||||||||||
1999 | 0.31 | 0.41 | 0.28 | 0.12 | 0.55 | 0.33 | 0.00 | 0.29 | 0.00 | 0.03 | 0.33 | 0.15 | 0.55 | |||||||||||||
2000 | 0.38 | 0.28 | a | 0.41 | a | 0.48 | 0.65 | 0.00 | ----- | z | 0.00 | 0.23 | 0.69 | 0.18 | 0.16 | b | ----- | z | ||||||||
2001 | 0.49 | 0.12 | 0.33 | b | 0.40 | 0.44 | 0.08 | 0.58 | 0.00 | 0.07 | 0.25 | 0.45 | 0.22 | 0.58 | b | |||||||||||
2002 | 0.38 | 0.23 | n | 0.23 | 0.37 | 0.34 | 0.48 | 0.12 | 0.00 | 0.03 | m | 0.00 | 0.56 | 0.34 | ----- | z | ||||||||||
2003 | 0.61 | 0.21 | 0.63 | 0.25 | ----- | z | ----- | z | ----- | z | 0.40 | 0.00 | w | 0.00 | q | 0.53 | 0.51 | ----- | z | |||||||
2004 | 0.26 | 0.31 | 0.13 | 0.28 | 0.59 | 0.06 | l | 0.00 | m | 0.39 | l | 0.29 | t | 0.73 | h | 0.26 | 0.60 | ----- | z | |||||||
2005 | 0.15 | 0.47 | 0.01 | t | 0.37 | p | 0.67 | j | 0.25 | r | 0.01 | c | 0.00 | h | 0.00 | s | 0.55 | j | 0.56 | j | 0.73 | g | ----- | z | ||
2006 | 0.29 | l | 0.22 | k | 0.09 | k | 0.72 | b | 0.24 | r | 0.19 | o | 0.62 | t | 0.00 | s | 0.00 | x | 0.03 | w | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.12 | s | 0.06 | s | ----- | z |
2008 | 0.25 | o | 0.19 | p | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | 0.42 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.24 | 0.66 | ----- | z | |||
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2016 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2017 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.41 | 0.35 | 0.36 | 0.43 | 0.53 | 0.42 | 0.23 | 0.21 | 0.33 | 0.36 | 0.41 | 0.46 | 0.92 | |||||||||||||
S.D. | 0.25 | 0.19 | 0.21 | 0.25 | 0.33 | 0.32 | 0.33 | 0.33 | 0.36 | 0.27 | 0.22 | 0.32 | 0.41 | |||||||||||||
SKEW | 1.45 | 1.29 | 1.04 | 1.19 | 0.96 | 2.02 | 2.78 | 2.72 | 2.24 | 1.63 | 0.81 | 2.21 | 1.29 | |||||||||||||
MAX | 1.45 | 0.96 | 1.06 | 1.28 | 1.65 | 2.00 | 1.93 | 1.80 | 2.00 | 1.57 | 1.15 | 2.03 | 2.03 | |||||||||||||
MIN | 0.02 | 0.02 | 0.04 | 0.10 | 0.08 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | |||||||||||||
YRS | 70 | 68 | 69 | 70 | 70 | 70 | 69 | 69 | 67 | 70 | 71 | 72 | 47 |