YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.69 | 0.17 | ----- | z | 0.38 | 1.68 | 1.15 | 0.08 | ----- | z | ||||||
1941 | 0.25 | 0.49 | ----- | z | 2.30 | 1.65 | 0.77 | 1.37 | 1.47 | 2.21 | 4.62 | 0.00 | 1.05 | ----- | z | |||||||||||
1942 | 0.19 | 0.31 | 0.00 | 0.43 | 1.16 | 0.00 | 0.00 | ----- | z | 0.43 | 0.48 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.73 | 0.79 | 0.61 | 1.08 | 2.35 | 0.00 | 0.00 | a | ----- | z | ||||||
1946 | ----- | z | 0.00 | ----- | z | ----- | z | 0.73 | 0.27 | 0.25 | 0.73 | 0.10 | 1.00 | 0.02 | 5.15 | ----- | z | |||||||||
1947 | 0.10 | y | 0.00 | 0.07 | 0.00 | 2.65 | 0.42 | 0.35 | ----- | z | 0.17 | 0.01 | g | ----- | z | ----- | z | ----- | z | |||||||
1948 | 0.36 | p | 0.03 | n | 0.24 | 0.18 | 0.00 | x | ----- | z | ----- | z | ----- | z | ----- | z | 0.40 | j | ----- | z | 0.48 | ----- | z | |||
1949 | 0.48 | 0.00 | 0.13 | 1.21 | 1.26 | 1.85 | 1.30 | 0.54 | 1.46 | 1.55 | a | 0.00 | 0.54 | 1.85 | a | |||||||||||
1950 | 0.46 | 0.19 | 0.00 | 0.24 | b | 0.72 | e | 0.00 | 0.75 | 0.59 | g | 1.62 | 0.11 | 0.00 | 0.00 | 1.62 | n | |||||||||
1951 | 0.00 | 0.27 | 0.36 | 0.33 | 0.28 | 1.26 | 0.55 | 0.77 | 0.69 | 0.16 | 0.01 | 0.17 | 1.26 | |||||||||||||
1952 | 0.41 | 0.24 | 0.00 | 0.32 | 0.55 | 0.48 | 0.34 | 0.00 | 0.50 | 0.00 | 0.52 | 0.80 | 0.80 | |||||||||||||
1953 | 0.00 | 0.00 | b | 0.00 | a | 0.00 | a | 0.00 | 0.00 | 0.30 | 0.30 | 0.00 | 0.20 | 0.00 | 0.50 | 0.50 | d | |||||||||
1954 | 0.26 | 0.00 | 0.50 | 1.04 | 2.00 | 0.25 | 0.00 | 0.86 | 0.16 | 4.07 | 0.00 | 0.00 | 4.07 | |||||||||||||
1955 | 0.48 | ----- | z | 0.00 | ----- | z | 1.14 | 0.80 | 1.80 | 0.70 | 1.50 | 0.61 | 0.23 | 0.00 | ----- | z | ||||||||||
1956 | 0.45 | ----- | z | 0.00 | 0.30 | 0.00 | 0.00 | 0.22 | 0.37 | 0.68 | 0.46 | 0.00 | 0.22 | ----- | z | |||||||||||
1957 | 0.35 | 0.94 | 0.00 | 3.60 | 1.20 | 0.04 | 0.00 | 0.00 | 0.58 | 1.54 | 0.47 | 0.17 | 3.60 | |||||||||||||
1958 | 1.01 | 0.70 | 0.27 | 0.32 | 0.42 | 0.32 | 0.80 | 0.54 | 2.50 | 0.67 | 0.29 | 0.00 | 2.50 | |||||||||||||
1959 | 0.00 | 0.00 | 0.10 | 0.17 | 0.58 | 0.51 | 2.33 | 0.00 | 0.00 | 0.62 | 0.69 | ----- | z | ----- | z | |||||||||||
1960 | ----- | z | ----- | z | ----- | z | 0.35 | 0.40 | 0.55 | 0.60 | 2.10 | 1.00 | 0.87 | 0.21 | 0.57 | c | ----- | z | ||||||||
1961 | 0.57 | 0.11 | 0.46 | 0.18 | 0.20 | 0.68 | 1.07 | 0.58 | 1.12 | 0.00 | 0.83 | 0.00 | 1.12 | |||||||||||||
1962 | 0.00 | 0.11 | 0.51 | 0.22 | 0.00 | 0.38 | 0.52 | 0.04 | 0.21 | 0.00 | 0.48 | 0.29 | 0.52 | |||||||||||||
1963 | 0.00 | 0.11 | 0.75 | 0.00 | 0.80 | 0.66 | 0.15 | 0.16 | 0.11 | 0.73 | 0.54 | 0.00 | 0.80 | |||||||||||||
1964 | 0.31 | 0.00 | 0.61 | 0.00 | 0.00 | 0.16 | 0.00 | 0.07 | 1.45 | 0.39 | 0.30 | 0.26 | 1.45 | |||||||||||||
1965 | 0.00 | 2.38 | 0.00 | 0.00 | 0.93 | 2.75 | 0.00 | 0.65 | 0.90 | 0.93 | 0.00 | 0.34 | 2.75 | |||||||||||||
1966 | 0.50 | 0.15 | 0.00 | 1.16 | 0.45 | 0.53 | 0.00 | 0.25 | 1.09 | 1.35 | 0.00 | 0.00 | 1.35 | |||||||||||||
1967 | 0.00 | 0.00 | 0.23 | 0.10 | 0.52 | 1.30 | 0.79 | 0.22 | 1.90 | 0.20 | 0.50 | 0.57 | 1.90 | |||||||||||||
1968 | 0.57 | 0.44 | 0.62 | 0.40 | 1.78 | 0.00 | 1.75 | 0.82 | 1.23 | 0.00 | 1.82 | 0.00 | 1.82 | |||||||||||||
1969 | 0.00 | 0.26 | 0.21 | 2.25 | 0.50 | 0.41 | 0.89 | 0.00 | 1.82 | 1.23 | 1.00 | 0.45 | 2.25 | |||||||||||||
1970 | 0.00 | 0.63 | 0.73 | 0.48 | 0.00 | 1.42 | 0.00 | 0.84 | 1.90 | 0.67 | c | 0.00 | 0.00 | 1.90 | c | |||||||||||
1971 | 0.00 | 0.00 | 0.00 | 0.39 | 0.32 | 0.15 | 0.00 | 2.57 | 0.50 | 0.22 | 0.00 | 0.00 | 2.57 | |||||||||||||
1972 | 1.00 | 0.00 | 0.00 | 0.16 | ----- | z | ----- | z | 0.00 | 1.38 | 1.45 | 0.56 | 0.00 | 0.00 | ----- | z | ||||||||||
1973 | 0.26 | 0.90 | b | 1.31 | 0.52 | 0.04 | 0.00 | 1.27 | 0.76 | 0.15 | d | 0.16 | 0.00 | 0.00 | 1.31 | f | ||||||||||
1974 | 0.77 | 0.00 | 0.09 | 1.98 | 0.00 | 0.30 | 0.00 | 3.25 | 1.25 | 1.57 | 1.10 | 0.44 | 3.25 | |||||||||||||
1975 | 0.86 | 0.46 | c | 0.00 | 0.00 | 1.62 | 1.22 | 1.00 | 0.38 | 1.90 | 0.24 | 0.57 | 0.50 | 1.90 | c | |||||||||||
1976 | 0.00 | 0.06 | 0.00 | 0.94 | 0.54 | 0.75 | 1.63 | 0.00 | 3.04 | 1.12 | b | 0.50 | 0.00 | 3.04 | b | |||||||||||
1977 | 0.50 | 0.46 | 0.00 | 0.80 | 1.20 | 0.80 | 0.32 | 0.60 | 0.58 | 1.00 | 0.46 | 0.00 | 1.20 | |||||||||||||
1978 | 0.25 | 0.30 | 0.00 | 0.00 | 1.75 | 1.10 | 0.32 | 1.50 | 6.47 | c | 3.50 | 1.60 | 0.16 | 6.47 | c | |||||||||||
1979 | 0.00 | 0.84 | 0.25 | 0.00 | 0.25 | 0.90 | 0.32 | 1.47 | 0.17 | 0.00 | 0.00 | 0.60 | 1.47 | |||||||||||||
1980 | 0.30 | 0.10 | 0.00 | 0.02 | 1.25 | 1.38 | 0.00 | 1.20 | 4.20 | f | 0.02 | 1.26 | 1.08 | 4.20 | f | |||||||||||
1981 | 0.56 | 1.22 | 0.12 | 1.55 | 1.07 | 0.07 | 1.03 | 1.50 | 0.71 | 2.30 | 0.00 | 0.00 | 2.30 | |||||||||||||
1982 | 0.00 | a | 0.17 | 0.00 | 0.42 | 1.42 | 1.11 | 0.39 | ----- | z | 0.00 | 0.00 | 0.70 | 0.50 | a | ----- | z | |||||||||
1983 | 0.31 | 0.00 | 0.00 | 0.00 | 0.62 | 0.42 | 0.12 | 0.23 | 0.13 | 2.00 | 0.64 | 0.00 | 2.00 | |||||||||||||
1984 | 0.36 | 0.14 | 0.00 | 0.00 | 2.00 | 0.61 | 0.00 | 0.00 | 2.22 | 1.03 | 1.30 | 1.23 | 2.22 | |||||||||||||
1985 | 0.45 | a | 0.50 | 0.00 | 0.39 | 0.10 | 0.69 | 2.10 | 0.16 | 0.17 | 1.23 | 0.35 | 0.00 | 2.10 | a | |||||||||||
1986 | 0.15 | 0.16 | 0.00 | 0.00 | 2.05 | 0.54 | 0.50 | 2.45 | 2.78 | 1.71 | 0.95 | 2.29 | 2.78 | |||||||||||||
1987 | 0.00 | 0.76 | 0.54 | 0.41 | 2.00 | 0.78 | 0.69 | 1.20 | 0.59 | 0.46 | 0.00 | 0.70 | 2.00 | |||||||||||||
1988 | 0.00 | 0.00 | 0.32 | 0.00 | 0.65 | 0.41 | 2.00 | 0.83 | 2.00 | 0.00 | a | 0.00 | 0.71 | 2.00 | a | |||||||||||
1989 | 0.24 | 1.80 | 0.05 | 0.80 | 0.62 | 0.10 | 0.00 | 0.07 | 1.70 | 0.10 | 0.09 | 0.04 | 1.80 | |||||||||||||
1990 | 0.00 | 0.74 | 0.30 | 0.23 | 0.00 | 0.22 | 0.90 | 0.50 | 2.00 | 1.85 | 0.42 | 0.56 | 2.00 | |||||||||||||
1991 | 0.96 | 0.28 | 0.00 | 1.08 | 0.45 | 0.35 | 0.84 | 0.59 | 1.40 | 0.24 | 0.81 | a | 0.57 | 1.40 | a | |||||||||||
1992 | 0.65 | 0.75 | x | 0.55 | 0.93 | 3.50 | 0.58 | 0.84 | 0.50 | 0.16 | 0.12 | 0.45 | 0.75 | 3.50 | x | |||||||||||
1993 | 0.47 | 0.15 | 0.17 | 0.00 | ----- | z | 0.30 | 0.87 | 1.10 | 0.92 | ----- | z | ----- | z | ----- | z | ----- | z | ||||||||
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | 0.37 | l | 0.21 | e | 0.02 | b | 0.22 | 0.10 | e | 0.56 | d | 0.03 | c | 0.23 | d | 0.57 | c | ----- | z | |
2007 | 0.65 | c | 0.11 | e | 0.52 | f | 0.70 | c | 1.53 | c | 3.12 | b | 0.94 | a | 0.35 | m | 0.51 | f | 0.06 | k | 0.00 | h | 0.05 | n | ----- | z |
2008 | 0.00 | d | 0.00 | g | 1.09 | h | 1.57 | e | 1.56 | c | 0.63 | f | 0.14 | i | 4.49 | k | 0.99 | g | 1.85 | e | 0.02 | i | 0.30 | f | ----- | z |
2009 | 0.00 | c | 0.69 | e | 0.04 | c | 2.32 | c | 0.55 | d | 0.89 | b | 0.68 | b | 0.16 | a | 1.14 | b | 1.15 | c | 0.00 | f | 0.05 | j | ----- | z |
2010 | 1.30 | m | 0.55 | j | 0.42 | f | 0.44 | f | 1.42 | e | 1.33 | c | 1.21 | f | 0.02 | b | 0.00 | j | 0.00 | h | 0.00 | e | 0.00 | d | ----- | z |
2011 | 0.00 | f | 0.13 | i | 0.00 | c | 0.00 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | 1.48 | h | 0.95 | g | 0.21 | g | 0.90 | e | 0.22 | h | 0.66 | d | 0.81 | e | 0.22 | b | 0.13 | 0.12 | a | ----- | z | |
2013 | 0.33 | 0.57 | c | 0.43 | 1.00 | 0.82 | 1.78 | b | 1.31 | b | 1.04 | 0.53 | 0.26 | a | 0.05 | c | 0.09 | d | 1.78 | o | ||||||
2014 | 0.00 | d | 0.00 | e | 0.64 | c | 0.47 | 1.05 | 0.81 | b | 1.44 | a | 1.50 | c | 0.81 | 0.65 | 1.25 | 0.65 | b | 1.50 | t | |||||
2015 | 0.51 | 0.84 | b | 0.46 | a | 0.99 | 2.93 | b | 1.86 | 2.94 | 0.34 | 0.45 | 1.83 | 1.84 | 0.99 | 2.94 | e | |||||||||
2016 | 0.20 | a | 0.65 | 0.42 | 0.17 | r | 1.73 | v | 1.53 | a | 1.79 | 0.80 | 1.38 | 0.38 | a | 0.97 | 0.24 | b | ----- | z | ||||||
2017 | 1.09 | 0.99 | 0.46 | 0.66 | 1.78 | ----- | z | ----- | z | ----- | z | ----- | z | 0.20 | q | 0.03 | 0.40 | k | ----- | z | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.32 | 0.39 | 0.22 | 0.62 | 0.95 | 0.72 | 0.72 | 0.73 | 1.10 | 0.92 | 0.44 | 0.44 | 2.09 | |||||||||||||
S.D. | 0.31 | 0.48 | 0.28 | 0.75 | 0.80 | 0.65 | 0.69 | 0.71 | 1.05 | 1.01 | 0.51 | 0.77 | 1.13 | |||||||||||||
SKEW | 0.74 | 2.02 | 1.46 | 1.86 | 0.96 | 1.53 | 1.05 | 1.47 | 2.48 | 1.74 | 1.11 | 4.41 | 1.79 | |||||||||||||
MAX | 1.09 | 2.38 | 1.31 | 3.60 | 3.50 | 3.12 | 2.94 | 3.25 | 6.47 | 4.62 | 1.84 | 5.15 | 6.47 | |||||||||||||
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 | 0.50 | |||||||||||||
YRS | 54 | 52 | 54 | 55 | 56 | 59 | 58 | 54 | 57 | 57 | 56 | 55 | 34 |