YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1922 | ----- | z | ----- | z | ----- | z | ----- | z | 0.30 | 0.98 | 0.00 | 0.55 | 0.21 | 0.26 | 0.83 | 0.74 | ----- | z | ||||||||
1923 | 0.80 | 0.34 | 0.25 | 0.56 | 0.50 | 1.28 | 0.52 | 0.18 | 0.26 | 0.85 | 0.25 | 0.70 | 1.28 | |||||||||||||
1924 | 0.33 | 0.59 | 0.20 | 0.14 | 0.03 | 0.95 | 0.08 | 0.16 | 0.32 | 0.89 | 0.62 | 0.48 | 0.95 | |||||||||||||
1925 | ----- | z | ----- | z | ----- | z | ----- | z | 0.70 | 1.21 | 0.13 | 0.57 | 0.44 | 0.10 | 0.40 | 0.70 | ----- | z | ||||||||
1926 | 0.72 | 0.90 | 0.43 | 0.42 | 0.52 | 0.33 | 0.54 | 0.62 | 0.14 | 0.26 | 0.70 | 0.39 | 0.90 | |||||||||||||
1927 | 0.53 | 0.40 | 0.40 | 0.26 | 0.29 | 1.26 | 0.04 | 0.04 | 0.56 | 0.45 | 0.85 | 0.26 | 1.26 | |||||||||||||
1928 | 0.36 | 0.17 | 0.41 | 0.40 | 0.49 | 0.66 | 0.26 | 0.04 | 0.70 | 0.27 | 0.25 | 0.34 | 0.70 | |||||||||||||
1929 | 0.73 | 0.22 | 0.46 | 0.42 | 0.18 | 0.92 | 0.00 | 0.07 | 0.09 | 0.43 | 0.12 | 0.83 | 0.92 | |||||||||||||
1930 | 0.71 | 0.19 | 0.16 | 0.22 | 0.44 | 0.94 | 0.05 | 0.21 | 0.42 | 0.64 | 0.45 | 0.49 | 0.94 | |||||||||||||
1931 | 0.52 | 0.30 | 0.47 | 0.28 | 0.31 | 0.60 | 0.00 | 0.00 | 0.34 | 0.56 | 0.57 | 0.46 | 0.60 | |||||||||||||
1932 | 0.51 | 0.25 | 0.43 | 0.45 | 0.40 | 0.33 | 0.12 | 0.18 | 0.02 | 0.32 | 0.53 | 0.40 | 0.53 | |||||||||||||
1933 | 0.35 | 0.58 | 0.33 | 0.45 | 0.41 | 0.71 | 0.00 | 0.45 | 0.31 | 0.75 | 0.43 | 0.48 | 0.75 | |||||||||||||
1934 | 0.36 | 0.20 | 0.40 | 0.47 | 0.68 | 0.88 | 0.12 | 0.13 | 0.30 | 0.55 | 0.50 | 0.35 | 0.88 | |||||||||||||
1935 | 0.50 | 0.22 | 0.29 | 0.42 | 0.23 | 0.67 | 0.20 | 0.13 | 0.01 | 0.31 | 0.31 | 0.39 | 0.67 | |||||||||||||
1936 | 0.39 | 0.41 | 0.18 | 0.41 | 0.55 | 0.96 | 0.16 | 0.15 | 1.05 | 0.15 | 0.21 | 0.61 | 1.05 | |||||||||||||
1937 | 0.25 | 0.30 | 0.40 | 0.74 | 0.41 | 0.83 | 0.15 | 0.07 | 0.47 | 0.38 | 0.61 | 1.25 | 1.25 | |||||||||||||
1938 | 0.45 | 0.59 | 0.38 | 0.46 | 0.48 | 2.90 | 0.19 | 0.54 | 0.30 | 0.54 | 0.36 | 0.42 | 2.90 | |||||||||||||
1939 | 0.24 | 0.55 | 0.44 | 0.42 | 0.31 | 0.27 | 0.08 | 0.00 | 0.27 | 0.42 | 0.13 | 0.64 | 0.64 | |||||||||||||
1940 | 0.61 | 0.67 | 0.45 | 0.19 | 0.08 | 0.21 | 0.40 | 0.00 | 0.82 | 0.88 | 0.36 | 0.80 | 0.88 | |||||||||||||
1941 | 0.55 | 0.42 | 0.21 | 0.36 | 0.86 | 0.63 | 0.40 | 0.70 | 0.68 | 0.48 | 0.63 | 0.83 | 0.86 | |||||||||||||
1942 | 0.83 | 0.74 | 0.24 | 0.65 | 0.64 | 0.77 | 0.65 | 0.08 | 0.00 | 0.20 | 0.52 | 0.59 | 0.83 | |||||||||||||
1943 | 0.67 | 0.32 | 0.46 | 0.58 | 0.27 | 0.65 | 0.25 | 0.62 | 0.00 | 0.45 | 0.24 | 0.40 | 0.67 | |||||||||||||
1944 | 0.30 | 0.37 | 0.19 | 0.60 | a | 0.20 | 0.37 | 0.18 | 0.03 | 0.32 | 0.49 | 0.57 | 0.53 | 0.60 | a | |||||||||||
1945 | 0.50 | 0.62 | 0.37 | 0.44 | 0.71 | 0.22 | 0.07 | 0.29 | 0.58 | 0.22 | 0.47 | 0.91 | 0.91 | |||||||||||||
1946 | 0.48 | 0.69 | 0.45 | 0.22 | 0.66 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.55 | 0.45 | 0.71 | b | 0.74 | a | 0.64 | l | 0.50 | b | ----- | z | ||
1949 | ----- | z | 2.00 | b | 0.60 | a | 0.61 | 0.75 | b | 0.12 | k | 0.11 | k | 0.08 | 0.31 | 0.18 | d | 1.04 | a | ----- | z | ----- | z | |||
1950 | ----- | z | 0.56 | 0.53 | 0.47 | a | 0.42 | 0.77 | a | 0.10 | 0.10 | 0.15 | 1.24 | a | 0.23 | 0.85 | ----- | z | ||||||||
1951 | 0.60 | 0.30 | 0.37 | 0.54 | 0.85 | 0.48 | 0.17 | 0.11 | 0.19 | 0.34 | 0.37 | 0.28 | 0.85 | |||||||||||||
1952 | 0.31 | 0.46 | 0.65 | 0.36 | 1.22 | 0.44 | 0.02 | 0.23 | 0.50 | 0.00 | 0.25 | 0.34 | 1.22 | |||||||||||||
1953 | 0.52 | 0.60 | 1.13 | 0.35 | 1.03 | a | 0.55 | 0.00 | 0.71 | 0.09 | 0.57 | 0.44 | 0.40 | 1.13 | a | |||||||||||
1954 | 0.38 | 0.33 | 0.48 | 0.27 | 0.32 | 1.28 | 0.28 | 0.30 | 0.40 | 0.23 | 0.32 | f | ----- | z | ----- | z | ||||||||||
1955 | ----- | z | ----- | z | ----- | z | 0.29 | 0.51 | 0.40 | 0.35 | 0.00 | 0.52 | 0.75 | 0.65 | 0.90 | ----- | z | |||||||||
1956 | 0.68 | 0.75 | 0.50 | 0.67 | 1.03 | 0.41 | 0.31 | 0.96 | 0.16 | 0.73 | 0.25 | 0.62 | 1.03 | |||||||||||||
1957 | 1.17 | 0.37 | 0.36 | 0.27 | 0.60 | 0.16 | b | 0.06 | 0.25 | 0.48 | 0.92 | 0.75 | 0.80 | 1.17 | b | |||||||||||
1958 | 0.58 | 0.46 | 0.28 | 0.60 | 0.48 | 1.17 | 0.87 | ----- | z | ----- | z | 0.22 | 0.73 | 0.65 | ----- | z | ||||||||||
1959 | 0.58 | 0.32 | ----- | z | ----- | z | ----- | z | 0.05 | p | 0.35 | 0.19 | 1.08 | 0.27 | 0.33 | 0.33 | ----- | z | ||||||||
1960 | 0.30 | 0.47 | 0.42 | 0.25 | 0.74 | 0.28 | 0.15 | 0.46 | 0.29 | 0.35 | 0.43 | 0.61 | 0.74 | |||||||||||||
1961 | 0.48 | 0.31 | 0.35 | 0.28 | 0.34 | 0.15 | 0.05 | 0.63 | 0.36 | 0.28 | 0.57 | 0.50 | 0.63 | |||||||||||||
1962 | 0.66 | 0.85 | 0.39 | 0.86 | 0.93 | 0.05 | 0.00 | 0.45 | 0.79 | 0.70 | 0.33 | 0.94 | 0.94 | |||||||||||||
1963 | 0.45 | 0.53 | 0.21 | b | 0.52 | 0.37 | 0.23 | 0.25 | 0.15 | 0.59 | 0.39 | 0.78 | 0.41 | 0.78 | b | |||||||||||
1964 | 0.32 | 0.14 | 0.26 | 0.37 | ----- | z | 0.46 | 0.77 | 0.19 | 0.23 | 0.48 | 0.80 | 1.10 | ----- | z | |||||||||||
1965 | 0.89 | 0.26 | 0.58 | 0.19 | 0.52 | 1.20 | 0.63 | 0.65 | 0.33 | 0.16 | 0.32 | 0.15 | 1.20 | |||||||||||||
1966 | 0.44 | 0.18 | 0.36 | 0.35 | 0.10 | 0.38 | 0.32 | 0.20 | 0.62 | 0.45 | 0.76 | 0.36 | 0.76 | |||||||||||||
1967 | 0.34 | 0.16 | 0.33 | 0.42 | 0.49 | 0.52 | 0.02 | 0.00 | 0.31 | 0.42 | 0.25 | 0.22 | 0.52 | |||||||||||||
1968 | 0.45 | 0.29 | 0.29 | 0.10 | 0.30 | 0.72 | 0.20 | 0.39 | 0.28 | 1.16 | 0.58 | 0.40 | 1.16 | |||||||||||||
1969 | 0.55 | 0.30 | 0.12 | 0.70 | 0.57 | 0.87 | b | 0.25 | 0.00 | 0.25 | 0.39 | 0.72 | 1.00 | 1.00 | b | |||||||||||
1970 | 0.70 | a | 0.29 | 0.50 | 0.20 | 0.28 | 0.90 | 0.57 | 0.22 | 0.49 | 0.50 | 0.40 | 0.28 | 0.90 | a | |||||||||||
1971 | 0.42 | 0.31 | 0.36 | 0.43 | a | 0.58 | 0.35 | 0.46 | 0.12 | 0.47 | 0.47 | b | 0.63 | a | 1.17 | 1.17 | d | |||||||||
1972 | 0.46 | 0.20 | 0.89 | 0.56 | 1.45 | 0.52 | 0.03 | 0.46 | 0.38 | 0.54 | 0.16 | 0.28 | 1.45 | |||||||||||||
1973 | 0.52 | 0.50 | 0.25 | 0.13 | 0.42 | 0.08 | 0.37 | 0.14 | 0.33 | 0.39 | 0.83 | 0.65 | 0.83 | |||||||||||||
1974 | 0.41 | 0.43 | 0.19 | 0.45 | 0.36 | 0.41 | 0.60 | 0.00 | 0.00 | 0.14 | 0.24 | 0.36 | 0.60 | |||||||||||||
1975 | 0.52 | 0.32 | 0.37 | 0.42 | 0.17 | 0.60 | 2.28 | 0.41 | 0.00 | 0.62 | 0.50 | 0.56 | 2.28 | |||||||||||||
1976 | 0.78 | 0.52 | 0.38 | 0.50 | 0.46 | 0.42 | 0.29 | 0.86 | 0.18 | 0.54 | 0.24 | 0.01 | 0.86 | |||||||||||||
1977 | 0.20 | 0.34 | 0.34 | 0.10 | 0.41 | 0.16 | 0.21 | 0.26 | 0.51 | 0.30 | 0.68 | c | 0.53 | 0.68 | c | |||||||||||
1978 | 0.34 | 0.46 | a | 0.40 | a | 0.80 | 0.29 | 0.26 | 0.98 | 0.50 | 0.22 | 0.04 | 0.71 | 0.72 | 0.98 | b | ||||||||||
1979 | 0.49 | 0.42 | 0.42 | 0.34 | 0.49 | 0.28 | 0.03 | 0.70 | 0.13 | 1.00 | 0.78 | a | 0.25 | 1.00 | a | |||||||||||
1980 | 0.33 | 0.30 | 0.39 | 0.66 | 0.56 | b | 0.36 | 0.16 | 0.00 | 0.73 | 0.42 | 0.59 | 0.65 | 0.73 | b | |||||||||||
1981 | 0.34 | 0.81 | 0.55 | 0.32 | 0.56 | 0.50 | 0.45 | 0.00 | 1.06 | 0.50 | 0.83 | 0.88 | a | 1.06 | a | |||||||||||
1982 | 0.45 | a | 0.34 | 0.50 | 0.35 | 0.40 | 0.55 | 0.21 | 0.28 | 0.25 | 0.82 | a | 0.50 | 0.60 | 0.82 | b | ||||||||||
1983 | 0.28 | 0.52 | 1.09 | a | 0.47 | 0.97 | 0.34 | 0.28 | 1.12 | 0.50 | 0.67 | 0.34 | 0.54 | c | 1.12 | d | ||||||||||
1984 | 0.22 | 0.44 | 0.40 | 0.67 | 0.71 | 0.53 | 0.17 | 1.03 | 0.12 | 0.41 | a | 0.55 | a | 0.40 | 1.03 | b | ||||||||||
1985 | 0.22 | 0.41 | 0.30 | 0.27 | a | 0.23 | 0.24 | 0.60 | 0.30 | 0.09 | 0.41 | 0.38 | c | 0.52 | 0.60 | d | ||||||||||
1986 | 0.43 | 0.77 | 0.63 | 0.26 | a | 1.15 | a | 0.27 | 0.26 | 0.00 | 0.55 | 0.57 | 0.54 | 0.18 | 1.15 | b | ||||||||||
1987 | 0.53 | 0.61 | 0.53 | l | 0.38 | h | 0.42 | 0.37 | 0.20 | a | 0.32 | 0.07 | 0.04 | 0.31 | a | 0.45 | a | 0.61 | w | |||||||
1988 | 0.42 | 0.15 | 0.19 | 0.39 | 0.71 | 0.37 | 0.01 | 0.24 | 0.38 | 0.03 | 0.59 | a | 0.35 | 0.71 | a | |||||||||||
1989 | 0.80 | 0.40 | a | 0.40 | 0.45 | a | 1.53 | b | 0.70 | 0.57 | 0.40 | 0.33 | 0.25 | 0.32 | 0.12 | 1.53 | d | |||||||||
1990 | 0.52 | a | 0.18 | a | 0.48 | 0.70 | 0.32 | 0.36 | 0.12 | 0.33 | 1.00 | 0.35 | 0.38 | 0.45 | b | 1.00 | d | |||||||||
1991 | 0.45 | 0.52 | 0.39 | 0.65 | 1.16 | a | ----- | z | ----- | z | 0.12 | ----- | z | ----- | z | ----- | z | 0.42 | a | ----- | z | |||||
1992 | ----- | z | 0.48 | a | 0.10 | ----- | z | ----- | z | 0.55 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
1993 | ----- | z | ----- | z | ----- | z | 0.36 | 0.64 | 0.43 | 0.29 | 1.80 | 0.00 | 0.00 | a | 0.30 | g | 0.68 | b | ----- | z | ||||||
1994 | 1.07 | a | 0.65 | c | 0.12 | 0.34 | 1.49 | b | 0.42 | d | 0.23 | 0.20 | 0.74 | a | 0.40 | a | 0.55 | n | 1.00 | p | ----- | z | ||||
1995 | 0.90 | 0.47 | 1.19 | b | 0.76 | 0.47 | 0.72 | 0.45 | a | 0.40 | 0.60 | 0.29 | 2.01 | 0.80 | 2.01 | c | ||||||||||
1996 | 0.35 | 0.65 | b | 0.64 | h | 0.39 | 0.50 | 0.48 | 0.06 | 0.00 | 0.75 | 0.54 | 1.48 | 0.92 | 1.48 | j | ||||||||||
1997 | 0.47 | c | 0.70 | 0.50 | i | 0.50 | 0.25 | a | 0.71 | 0.81 | 0.42 | 0.12 | 0.32 | 0.32 | b | 0.25 | g | 0.81 | v | |||||||
1998 | 0.65 | e | 0.33 | a | 0.20 | 0.22 | a | 0.72 | a | 0.64 | 0.12 | 0.25 | 0.52 | 0.30 | 0.52 | b | 0.50 | b | 0.72 | l | ||||||
1999 | 1.03 | d | 0.60 | f | 0.12 | 0.30 | b | 0.39 | a | 0.40 | d | 1.10 | 0.53 | f | 0.00 | 1.57 | 0.22 | 0.67 | 1.57 | w | ||||||
2000 | 0.59 | a | 0.70 | b | 0.45 | a | 0.15 | b | 0.55 | 0.72 | 0.41 | a | 0.00 | j | 0.12 | 0.55 | a | 0.27 | d | 0.47 | e | ----- | z | |||
2001 | 0.37 | b | 0.18 | a | 0.60 | g | 0.30 | g | 0.15 | c | ----- | z | ----- | z | ----- | z | 0.00 | 0.29 | a | 0.70 | e | 0.60 | o | ----- | z | |
2002 | 0.07 | l | 0.04 | r | 0.04 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | v | 1.40 | l | ----- | z |
2003 | 0.49 | n | 0.37 | v | ----- | z | 0.28 | v | 0.41 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | 0.43 | s | 1.55 | v | 0.49 | o | 0.27 | j | 0.61 | i | 0.15 | p | ----- | z | 0.05 | v | 0.05 | y | ----- | z |
2005 | 0.25 | p | 0.20 | p | 1.10 | q | ----- | z | 1.25 | y | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.60 | b | ----- | z |
2007 | 0.50 | a | 0.15 | l | 0.05 | a | 0.17 | y | 0.55 | 0.20 | o | 0.00 | d | 0.00 | y | ----- | z | 0.25 | q | 0.07 | w | 0.35 | y | ----- | z | |
2008 | 0.00 | w | ----- | z | ----- | z | ----- | z | ----- | z | 0.52 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | 0.00 | w | 0.00 | h | 0.90 | 0.75 | k | 0.00 | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
2010 | ----- | z | ----- | z | ----- | z | 0.29 | 0.61 | 0.70 | 0.44 | 0.12 | 0.33 | 1.29 | 0.73 | i | 0.34 | q | ----- | 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 | 0.20 | e | ----- | z |
2018 | 0.33 | 0.14 | 0.60 | e | 0.48 | 0.32 | a | 0.69 | g | 0.01 | 1.62 | a | 0.07 | 0.69 | 0.37 | 0.30 | 1.62 | n | ||||||||
2019 | 0.61 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.51 | 0.45 | 0.40 | 0.42 | 0.55 | 0.60 | 0.30 | 0.33 | 0.37 | 0.48 | 0.52 | 0.54 | 0.99 | |||||||||||||
S.D. | 0.20 | 0.26 | 0.21 | 0.17 | 0.32 | 0.41 | 0.34 | 0.35 | 0.27 | 0.30 | 0.30 | 0.25 | 0.41 | |||||||||||||
SKEW | 1.02 | 2.88 | 1.68 | 0.37 | 1.19 | 2.67 | 3.02 | 1.97 | 0.73 | 1.15 | 2.21 | 0.55 | 2.47 | |||||||||||||
MAX | 1.17 | 2.00 | 1.19 | 0.86 | 1.53 | 2.90 | 2.28 | 1.80 | 1.08 | 1.57 | 2.01 | 1.25 | 2.90 | |||||||||||||
MIN | 0.20 | 0.14 | 0.05 | 0.10 | 0.03 | 0.05 | 0.00 | 0.00 | 0.00 | 0.00 | 0.12 | 0.01 | 0.52 | |||||||||||||
YRS | 74 | 74 | 71 | 74 | 79 | 74 | 78 | 76 | 77 | 78 | 73 | 75 | 57 |