YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.24 | 0.35 | 0.55 | ----- | z | ----- | z | 0.60 | ----- | z | ||||
1924 | 0.81 | 0.45 | 0.15 | 0.25 | 0.04 | 0.43 | 0.00 | 0.00 | 0.81 | 0.50 | 0.55 | 0.46 | 0.81 | |||||||||||||
1925 | 0.40 | a | 0.35 | 0.25 | 0.50 | 0.75 | 0.23 | 0.00 | 0.40 | 0.88 | 0.00 | 0.30 | 0.60 | 0.88 | a | |||||||||||
1926 | 0.50 | 0.90 | 0.24 | 0.56 | 0.60 | 0.42 | 0.00 | 0.60 | 0.00 | 0.42 | 0.42 | 0.28 | 0.90 | |||||||||||||
1927 | 0.60 | 0.46 | 0.28 | 0.20 | 0.24 | 1.13 | ----- | z | 0.10 | 0.90 | 0.56 | 0.51 | 0.24 | d | ----- | z | ||||||||||
1928 | 0.70 | 0.24 | a | 0.50 | a | 0.16 | 0.20 | 0.55 | 0.17 | 0.00 | 1.01 | 0.22 | 0.32 | 0.40 | b | 1.01 | d | |||||||||
1929 | 0.30 | 0.60 | 0.28 | 0.62 | 0.60 | 0.55 | 0.00 | 0.00 | 0.00 | 0.28 | 0.18 | 0.78 | a | 0.78 | a | |||||||||||
1930 | 0.20 | 0.30 | 0.50 | 0.39 | 0.43 | 0.11 | 0.00 | 0.22 | 0.40 | 0.70 | a | 0.84 | 0.31 | 0.84 | a | |||||||||||
1931 | 0.32 | 0.40 | 0.51 | 0.21 | 0.10 | 0.88 | 0.00 | 0.00 | 0.65 | 0.38 | a | 0.40 | 0.49 | 0.88 | a | |||||||||||
1932 | 0.70 | 0.43 | a | 0.60 | 0.30 | 0.54 | a | 0.00 | 0.00 | 0.00 | 0.00 | 0.46 | 0.48 | 0.21 | 0.70 | b | ||||||||||
1933 | 0.18 | 0.48 | 0.31 | a | 0.09 | 0.60 | 0.20 | 0.00 | 0.11 | 0.30 | 0.46 | 0.50 | 0.35 | 0.60 | a | |||||||||||
1934 | 0.31 | 0.22 | 0.36 | 0.50 | 0.16 | a | 0.63 | 0.10 | 0.22 | a | 0.61 | 0.40 | a | 0.23 | a | 0.33 | 0.63 | d | ||||||||
1935 | 0.40 | c | 0.00 | 0.19 | 0.43 | 0.47 | 1.50 | 0.23 | 0.04 | 0.23 | 0.41 | 0.41 | a | 0.46 | c | 1.50 | g | |||||||||
1936 | 0.60 | 0.30 | 0.30 | 0.56 | 0.40 | 0.60 | 0.00 | 0.00 | 0.58 | a | 0.00 | 0.08 | 0.34 | 0.60 | a | |||||||||||
1937 | 0.40 | 0.39 | 0.60 | 0.54 | 0.20 | 0.57 | 0.11 | 0.00 | 0.20 | 0.00 | 0.56 | 1.04 | 1.04 | |||||||||||||
1938 | 0.20 | 0.60 | 0.45 | 0.52 | 0.40 | 1.40 | 0.51 | 0.00 | 0.20 | 0.23 | 0.73 | a | 0.15 | 1.40 | a | |||||||||||
1939 | 0.20 | 0.35 | 0.58 | 0.14 | 0.16 | 0.46 | 0.15 | 0.00 | 0.50 | a | 0.24 | 0.00 | 0.54 | 0.58 | a | |||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.06 | 0.06 | 0.30 | 0.47 | 0.54 | 0.76 | 1.65 | 1.65 | |||||||||||||
1946 | 0.51 | 0.75 | 0.67 | 0.21 | 0.36 | 0.45 | 0.05 | 0.25 | 0.25 | 0.70 | 0.43 | 0.50 | 0.75 | |||||||||||||
1947 | 0.57 | 0.30 | 0.20 | 0.32 | 0.29 | 0.95 | 0.63 | 1.10 | 0.45 | 1.06 | 0.36 | 0.63 | 1.10 | |||||||||||||
1948 | 0.77 | 0.42 | 0.50 | 0.63 | 0.56 | 1.43 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.70 | ----- | z | |||||||
1949 | 0.16 | 0.20 | ----- | z | ----- | z | 0.27 | c | 0.00 | 0.01 | 0.00 | a | 0.15 | 0.40 | 1.13 | 0.21 | ----- | z | ||||||||
1950 | 1.10 | a | 0.20 | 0.34 | 0.41 | h | 0.25 | l | 1.68 | 0.00 | ----- | z | 0.15 | 2.00 | 0.45 | 0.47 | ----- | z | ||||||||
1951 | 0.63 | 0.22 | 0.20 | 0.52 | 0.54 | 0.60 | 0.14 | 0.00 | 0.19 | 0.32 | 0.43 | a | 0.40 | 0.63 | a | |||||||||||
1952 | 0.32 | 0.56 | 0.13 | 0.25 | 0.62 | 0.52 | a | ----- | z | 0.00 | 0.55 | 0.00 | 0.10 | 0.35 | ----- | z | ||||||||||
1953 | 1.15 | 0.47 | 0.18 | 0.66 | 0.34 | a | 0.30 | 0.00 | a | 0.43 | 0.02 | a | 0.34 | 0.97 | 0.60 | 1.15 | c | |||||||||
1954 | 0.40 | a | 0.23 | 0.34 | 0.54 | 0.55 | 0.53 | 0.00 | 0.38 | 0.60 | 0.18 | 0.11 | 0.70 | 0.70 | a | |||||||||||
1955 | 0.31 | 0.18 | 0.43 | 0.36 | 0.70 | 0.29 | 0.47 | 0.00 | 0.42 | 0.50 | 0.80 | 0.59 | 0.80 | |||||||||||||
1956 | 1.03 | 0.52 | 0.40 | 0.00 | 1.07 | 0.59 | 0.36 | 0.28 | 0.00 | 0.52 | 0.22 | 0.30 | 1.07 | |||||||||||||
1957 | 0.23 | ----- | z | 3.49 | u | 0.28 | 1.13 | 0.23 | 0.20 | 0.04 | 0.84 | 0.91 | b | 0.49 | 0.75 | ----- | z | |||||||||
1958 | 0.57 | 0.76 | 0.30 | 0.28 | 0.70 | 0.40 | 0.23 | 0.05 | 0.35 | 0.22 | 0.77 | 0.43 | 0.77 | |||||||||||||
1959 | 0.64 | 0.53 | 0.45 | 0.49 | 0.32 | 0.48 | 0.12 | 0.10 | 0.45 | 0.13 | 0.31 | 0.31 | 0.64 | |||||||||||||
1960 | 0.29 | f | ----- | z | ----- | z | ----- | z | ----- | z | 1.17 | l | 0.20 | 0.35 | 0.25 | 0.36 | 1.40 | 0.35 | ----- | z | ||||||
1961 | 0.44 | 0.90 | 0.35 | 0.80 | ----- | z | ----- | z | 0.19 | 0.66 | a | 0.14 | 0.24 | 0.85 | 0.24 | a | ----- | z | ||||||||
1962 | 0.15 | 0.24 | 0.45 | 0.65 | 0.62 | 0.12 | 0.00 | 0.70 | 0.78 | 0.52 | 0.29 | 1.16 | 1.16 | |||||||||||||
1963 | 0.50 | 0.45 | 0.53 | 0.55 | 0.70 | 0.16 | 0.46 | 0.10 | 0.93 | 0.17 | 0.83 | 0.55 | 0.93 | |||||||||||||
1964 | 0.37 | 0.05 | 0.23 | 0.10 | 0.05 | 0.45 | ----- | z | 0.00 | 0.27 | 0.30 | 0.50 | 1.97 | ----- | z | |||||||||||
1965 | 0.78 | c | 0.11 | 0.25 | 0.38 | 0.54 | 1.52 | 0.11 | 0.87 | 0.20 | 0.25 | 0.40 | c | 0.10 | 1.52 | f | ||||||||||
1966 | 0.55 | 0.16 | 0.27 | 0.02 | 0.12 | 0.23 | 0.50 | 0.05 | 0.84 | 0.34 | 0.60 | 0.39 | 0.84 | |||||||||||||
1967 | 0.58 | 0.07 | 0.12 | 0.49 | 0.24 | 0.75 | 0.00 | 0.00 | 0.23 | 0.48 | 0.36 | 0.39 | 0.75 | |||||||||||||
1968 | 0.67 | a | 0.23 | b | 0.37 | ----- | z | 0.52 | 0.39 | b | 0.15 | 0.80 | 0.28 | 0.56 | 0.57 | 0.62 | ----- | z | ||||||||
1969 | 0.85 | 0.17 | 0.16 | 0.30 | 0.53 | 0.85 | 0.11 | 0.00 | 0.40 | 0.31 | 0.57 | 0.39 | 0.85 | |||||||||||||
1970 | 0.76 | 0.29 | 0.17 | b | 0.15 | 0.14 | 0.75 | b | 0.26 | 0.00 | 0.24 | 0.40 | 0.64 | 0.25 | 0.76 | d | ||||||||||
1971 | 0.36 | 0.26 | 0.30 | 0.25 | 0.70 | 0.19 | 0.23 | 0.31 | 0.21 | 0.45 | 0.73 | 0.29 | 0.73 | |||||||||||||
1972 | 0.70 | 0.07 | 0.45 | 0.20 | 0.26 | 0.35 | 0.00 | 0.07 | 0.00 | 0.50 | a | 0.33 | 0.48 | e | 0.70 | f | ||||||||||
1973 | 0.28 | 0.20 | g | 0.38 | e | 0.10 | 0.22 | 0.12 | 0.00 | 0.00 | 0.75 | 0.45 | 0.66 | e | 0.58 | e | 0.75 | v | ||||||||
1974 | 0.79 | a | 0.41 | a | 0.36 | 0.63 | b | 0.20 | 0.13 | 0.23 | 0.00 | 0.00 | 0.31 | 0.20 | 0.17 | 0.79 | d | |||||||||
1975 | 0.40 | 0.48 | 0.41 | 0.40 | 0.14 | 0.14 | 0.75 | 0.83 | 0.00 | 0.75 | 0.40 | a | 0.70 | 0.83 | a | |||||||||||
1976 | 0.52 | 0.31 | 0.30 | 0.31 | 0.15 | 0.90 | 0.08 | 1.56 | 0.89 | 0.28 | 0.22 | 0.11 | 1.56 | |||||||||||||
1977 | 0.12 | 0.24 | 0.18 | 0.09 | 1.02 | 0.16 | 0.16 | 0.38 | 0.46 | 0.14 | 0.69 | 1.02 | 1.02 | |||||||||||||
1978 | 0.30 | 0.15 | 0.32 | 0.90 | 0.45 | 0.40 | 1.40 | 0.55 | 0.33 | 0.02 | 0.60 | 0.33 | 1.40 | |||||||||||||
1979 | 0.45 | a | 0.30 | a | 0.46 | 0.80 | 0.32 | 0.16 | 0.00 | 0.54 | 0.30 | 0.73 | 0.54 | 0.38 | a | 0.80 | c | |||||||||
1980 | 0.80 | 0.40 | 0.30 | 0.95 | 0.53 | 0.30 | 0.10 | 0.24 | 0.24 | 0.20 | 0.78 | 0.50 | 0.95 | |||||||||||||
1981 | 0.58 | 0.98 | 0.57 | 0.25 | 1.70 | 0.40 | 0.20 | 0.46 | 0.98 | 0.42 | 0.50 | 1.00 | 1.70 | |||||||||||||
1982 | 0.73 | a | 0.50 | 0.20 | 0.52 | 1.54 | w | 0.68 | 0.15 | 0.46 | 0.60 | 1.21 | 0.30 | a | 0.52 | 1.54 | y | |||||||||
1983 | 0.18 | 0.57 | 0.40 | 0.58 | 0.98 | 0.40 | 0.32 | 0.50 | 0.18 | 0.50 | 0.38 | 0.30 | 0.98 | |||||||||||||
1984 | 0.10 | 0.51 | 0.62 | 0.46 | 0.55 | 0.54 | 0.17 | 0.67 | 0.26 | 0.62 | 1.12 | 0.24 | 1.12 | |||||||||||||
1985 | 0.36 | 0.22 | 0.38 | 0.19 | a | 0.58 | 0.25 | 0.20 | 0.35 | i | 0.47 | 0.60 | 0.47 | 0.22 | 0.60 | j | ||||||||||
1986 | 0.56 | 0.98 | 0.30 | 0.62 | 0.33 | 0.15 | 0.64 | 0.81 | 0.47 | 0.43 | 0.53 | 0.23 | 0.98 | |||||||||||||
1987 | 0.53 | 0.58 | a | 0.78 | 0.50 | 0.16 | 0.26 | 0.20 | a | 0.08 | 0.08 | 0.00 | 0.27 | 1.11 | 1.11 | b | ||||||||||
1988 | 0.50 | 0.22 | 0.40 | 1.05 | 0.50 | 0.30 | 0.00 | 0.00 | 0.96 | 0.02 | 0.68 | 0.14 | 1.05 | |||||||||||||
1989 | 0.90 | 0.41 | a | 0.58 | 1.08 | 0.51 | a | 0.45 | 0.17 | 0.63 | 0.16 | 0.89 | 0.54 | 0.39 | 1.08 | b | ||||||||||
1990 | 1.11 | a | 0.16 | 0.25 | 0.61 | 0.83 | 0.34 | 0.66 | 0.83 | 0.05 | 0.45 | 0.65 | 0.32 | a | 1.11 | b | ||||||||||
1991 | 0.52 | 0.35 | 0.41 | 0.40 | 0.56 | 0.71 | 0.33 | 0.60 | 0.00 | 0.40 | 0.50 | 0.32 | 0.71 | |||||||||||||
1992 | 0.39 | a | 0.27 | 0.56 | 0.88 | 0.18 | 0.56 | 0.52 | 0.26 | 0.10 | 0.52 | a | 0.31 | a | 1.04 | b | 1.04 | e | ||||||||
1993 | 0.40 | c | 0.42 | a | 0.58 | 0.45 | 0.87 | 0.51 | 1.10 | 0.97 | 0.00 | 0.46 | 0.40 | 0.86 | 1.10 | d | ||||||||||
1994 | 0.54 | 0.62 | a | 1.30 | 0.49 | 0.92 | b | 0.87 | 0.23 | 0.00 | 0.90 | 0.95 | 0.33 | ----- | z | ----- | z | |||||||||
1995 | 1.50 | 0.95 | a | 0.50 | 0.72 | 0.50 | 1.29 | 0.31 | 0.00 | 0.75 | ----- | z | 0.56 | 1.20 | ----- | z | ||||||||||
1996 | 1.25 | d | 0.60 | b | 1.00 | 0.39 | 0.95 | 0.85 | s | 0.00 | 0.00 | 0.36 | 0.39 | 1.67 | 2.95 | b | ----- | z | ||||||||
1997 | 1.29 | 0.35 | 0.77 | 0.75 | 1.86 | d | 0.50 | 0.00 | 0.00 | 0.25 | 0.62 | 0.73 | 0.00 | 1.86 | d | |||||||||||
1998 | ----- | z | 0.63 | 0.45 | 0.41 | 1.86 | 0.50 | 0.71 | n | 0.00 | 0.00 | 0.75 | u | 1.10 | 0.82 | ----- | z | |||||||||
1999 | 0.89 | ----- | z | ----- | z | 0.30 | 0.66 | 1.16 | 1.05 | 0.42 | 0.16 | 1.30 | 0.20 | 0.26 | ----- | z | ||||||||||
2000 | 0.30 | k | ----- | z | 0.35 | 0.18 | 1.20 | d | 0.50 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
2001 | ----- | z | 0.16 | 0.26 | 0.58 | 0.29 | 0.79 | 0.56 | ----- | z | 0.26 | 0.40 | 0.50 | 0.45 | ----- | z | ||||||||||
2002 | 0.57 | 0.24 | 0.50 | a | 0.56 | 0.63 | 0.52 | b | 0.13 | 0.23 | 0.17 | 0.40 | 0.57 | 0.49 | 0.63 | c | ||||||||||
2003 | 0.39 | s | 0.78 | ----- | z | 0.57 | 1.00 | 0.14 | 0.00 | 0.54 | 0.52 | 0.30 | 0.30 | 0.98 | ----- | z | ||||||||||
2004 | 0.31 | 0.40 | 0.34 | 0.50 | 0.96 | g | 0.25 | 0.22 | 1.50 | k | 0.32 | c | 0.26 | 0.37 | a | 0.60 | 1.50 | v | ||||||||
2005 | 0.20 | 0.30 | 0.44 | 0.42 | 1.00 | 0.15 | 0.18 | 0.00 | 0.00 | 0.52 | 0.52 | 0.40 | 1.00 | |||||||||||||
2006 | 1.00 | 0.23 | 0.57 | 0.38 | 0.54 | 0.70 | 0.40 | 0.15 | 0.05 | 0.17 | 0.39 | 0.80 | c | 1.00 | c | |||||||||||
2007 | 0.12 | 0.20 | 0.20 | 0.80 | 1.11 | x | 0.39 | 0.05 | 1.20 | 0.50 | b | 0.83 | a | 0.70 | 0.23 | ----- | z | |||||||||
2008 | 0.40 | a | 0.25 | c | 0.20 | 0.10 | 0.45 | 0.25 | 0.00 | 0.17 | 0.07 | 0.08 | 0.30 | 0.92 | d | 0.92 | h | |||||||||
2009 | 0.40 | 0.42 | 0.22 | 0.32 | x | 0.27 | 0.30 | 0.05 | 0.20 | 0.11 | 0.65 | 0.37 | 0.67 | 0.67 | x | |||||||||||
2010 | 0.88 | 0.52 | 0.50 | b | 0.99 | e | 0.57 | b | 0.38 | 0.16 | 0.23 | g | 0.85 | 1.07 | 0.44 | 0.64 | 1.07 | p | ||||||||
2011 | 0.50 | b | 0.58 | i | 0.41 | t | 0.34 | 0.20 | l | 0.62 | 0.25 | 0.07 | 0.03 | 0.25 | d | 0.15 | g | 0.00 | d | ----- | z | |||||
2012 | 0.66 | e | 0.18 | g | 0.35 | f | 0.75 | e | 0.22 | b | 0.64 | d | 0.09 | b | 0.00 | 0.00 | 0.01 | l | 0.19 | j | 0.09 | l | ----- | z | ||
2013 | 0.42 | d | 0.20 | 0.21 | 0.32 | 0.64 | 0.64 | 0.00 | 0.26 | 0.38 | 0.31 | 0.50 | p | 0.21 | 0.64 | t | ||||||||||
2014 | 0.41 | 1.25 | 1.10 | 0.36 | 0.40 | 0.23 | 0.63 | 0.86 | 0.18 | 0.31 | 0.00 | p | 1.79 | b | 1.79 | r | ||||||||||
2015 | 0.34 | b | 0.09 | g | 0.55 | 0.22 | a | ----- | z | 0.00 | m | 0.26 | ----- | z | ----- | z | 0.28 | 0.66 | ----- | z | ----- | z | ||||
2016 | 0.80 | 0.22 | 0.68 | 0.05 | 1.06 | 0.62 | ----- | z | 0.00 | 0.00 | f | ----- | z | ----- | z | ----- | z | ----- | z | |||||||
2017 | 0.42 | 0.42 | 1.43 | 0.83 | 0.97 | 1.20 | 0.00 | 4.20 | 1.30 | 1.01 | ----- | z | ----- | z | ----- | z | ||||||||||
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | 2.08 | s | 0.17 | x | 0.67 | i | ----- | z | ----- | z | 1.16 | r | 0.07 | 0.76 | ----- | z | ||
2020 | 1.79 | 0.31 | 0.33 | 0.75 | 1.18 | 0.35 | 0.00 | 0.00 | 0.00 | 0.54 | 1.25 | 0.92 | 1.79 | |||||||||||||
2021 | 0.46 | 0.66 | 0.45 | 0.21 | 1.70 | 0.50 | 0.00 | 0.00 | 0.59 | 0.00 | 0.69 | 1.43 | 1.70 | |||||||||||||
2022 | 2.50 | t | 0.29 | 0.74 | j | 0.87 | 0.89 | 1.48 | o | 0.00 | 0.32 | 0.23 | 0.65 | 1.33 | 1.20 | ----- | z | |||||||||
2023 | 0.00 | n | ----- | z | 0.62 | 1.04 | 1.12 | 0.14 | d | 0.01 | h | 0.34 | h | 0.90 | 0.41 | 0.95 | 0.92 | p | ----- | z | ||||||
2024 | ----- | z | 0.51 | v | 0.55 | 0.49 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.55 | 0.40 | 0.42 | 0.46 | 0.58 | 0.52 | 0.22 | 0.33 | 0.37 | 0.45 | 0.54 | 0.59 | 0.99 | |||||||||||||
S.D. | 0.32 | 0.24 | 0.24 | 0.26 | 0.40 | 0.37 | 0.29 | 0.54 | 0.31 | 0.32 | 0.31 | 0.46 | 0.32 | |||||||||||||
SKEW | 1.20 | 1.09 | 1.80 | 0.41 | 1.23 | 1.26 | 2.08 | 4.58 | 0.72 | 1.71 | 1.17 | 2.31 | 1.16 | |||||||||||||
MAX | 1.79 | 1.25 | 1.43 | 1.08 | 1.86 | 1.68 | 1.40 | 4.20 | 1.30 | 2.00 | 1.67 | 2.95 | 1.86 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.58 | |||||||||||||
YRS | 86 | 84 | 86 | 88 | 85 | 88 | 86 | 85 | 90 | 87 | 86 | 88 | 54 |