YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1937 | ----- | z | 1.10 | 0.28 | 1.69 | 0.37 | 0.70 | 0.12 | 0.03 | 0.57 | 0.58 | 1.57 | 1.75 | ----- | z | |||||||||||
1938 | 0.62 | 1.37 | a | 1.94 | k | 0.31 | 0.17 | 0.14 | 0.26 | ----- | z | 0.35 | w | 0.36 | s | 0.64 | 0.62 | a | ----- | z | ||||||
1939 | 0.52 | 0.59 | 0.83 | 0.29 | 0.38 | 0.17 | 0.26 | a | 0.14 | 0.54 | 0.30 | 0.09 | 2.11 | 2.11 | a | |||||||||||
1940 | 0.54 | 1.52 | 1.08 | 0.47 | 0.21 | 0.09 | 1.93 | 0.00 | 0.59 | 0.65 | 0.38 | 1.13 | 1.93 | |||||||||||||
1941 | 0.62 | 0.87 | 0.19 | 0.69 | 0.74 | 0.32 | 1.10 | 0.60 | 0.66 | 0.65 | 0.91 | 1.70 | 1.70 | |||||||||||||
1942 | 0.89 | 1.01 | 0.06 | 0.36 | 0.66 | 0.38 | 0.02 | 0.54 | 0.26 | 0.28 | 1.37 | 2.86 | 2.86 | |||||||||||||
1943 | 1.85 | 0.39 | 0.79 | 0.57 | 0.26 | 0.55 | 0.09 | 0.29 | 0.02 | 0.61 | 0.58 | 0.49 | 1.85 | |||||||||||||
1944 | 0.75 | 0.61 | 0.43 | 0.31 | 0.56 | 0.55 | 0.53 | 0.68 | 0.37 | 0.69 | 1.70 | 0.72 | 1.70 | |||||||||||||
1945 | 0.23 | 0.88 | 0.66 | 0.32 | a | 0.65 | a | 0.42 | 0.00 | 0.07 | 0.15 | 1.25 | 1.14 | 3.22 | 3.22 | b | ||||||||||
1946 | 1.42 | 0.96 | 0.52 | 0.14 | 0.36 | 0.14 | 0.04 | 0.21 | 0.22 | 0.64 | 1.12 | 0.26 | 1.42 | |||||||||||||
1947 | 0.42 | 0.73 | 0.78 | 0.24 | 1.16 | 0.56 | 0.33 | 0.09 | 0.05 | 0.62 | 0.42 | 0.19 | 1.16 | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.45 | 0.80 | 0.22 | 0.27 | 0.79 | 2.09 | ----- | z | ||||||
1949 | 0.81 | 2.26 | 0.33 | 0.22 | 0.76 | 0.05 | a | 0.00 | 0.00 | 0.45 | 0.38 | 0.77 | 0.60 | 2.26 | a | |||||||||||
1950 | 0.98 | k | ----- | z | ----- | z | ----- | z | 0.00 | x | 2.27 | 0.02 | 0.04 | 0.13 | 2.00 | 1.80 | 3.00 | ----- | z | |||||||
1951 | ----- | z | 1.75 | c | ----- | z | 1.00 | ----- | z | 0.00 | 0.00 | y | 0.20 | r | 0.48 | 1.16 | 0.80 | 0.84 | ----- | z | ||||||
1952 | 0.98 | 1.18 | 0.36 | 0.25 | 0.66 | 0.84 | 0.14 | 0.08 | 0.14 | 0.14 | 0.27 | 1.24 | 1.24 | |||||||||||||
1953 | 2.27 | a | 0.64 | 0.60 | 0.27 | 0.88 | 0.52 | 0.00 | 1.33 | 0.17 | 0.76 | 2.98 | 0.72 | 2.98 | a | |||||||||||
1954 | 1.70 | 0.78 | 0.62 | 0.54 | 0.27 | 0.79 | 0.00 | 0.40 | 0.09 | 0.25 | 0.34 | 0.55 | 1.70 | |||||||||||||
1955 | 0.45 | 0.17 | 0.30 | 0.26 | 0.00 | 0.12 | 0.18 | 0.00 | 0.48 | a | 0.85 | 1.25 | 2.14 | 2.14 | a | |||||||||||
1956 | 1.48 | 1.12 | 0.56 | 0.75 | 0.76 | 0.69 | 0.89 | 0.15 | 0.48 | 1.20 | 0.48 | 1.64 | 1.64 | |||||||||||||
1957 | 0.75 | 0.82 | 0.55 | 0.34 | 0.26 | 0.12 | 0.17 | 0.03 | 2.00 | 0.28 | 0.97 | 0.72 | 2.00 | |||||||||||||
1958 | 1.50 | 1.02 | 0.30 | 0.48 | 0.44 | 1.29 | 0.29 | 0.27 | 0.44 | 0.68 | 0.79 | 0.51 | 1.50 | |||||||||||||
1959 | 0.66 | 0.57 | 0.63 | 0.12 | 0.21 | 0.39 | 0.45 | 0.86 | 0.46 | 0.80 | 0.32 | 0.57 | 0.86 | |||||||||||||
1960 | 0.96 | 1.45 | 0.75 | 0.20 | 0.71 | 0.00 | 0.48 | 0.09 | 0.36 | 0.59 | 1.15 | 0.78 | 1.45 | |||||||||||||
1961 | 0.51 | 0.95 | 0.80 | 0.18 | 0.28 | 0.65 | 0.00 | 0.32 | 0.32 | 0.76 | 1.46 | 0.85 | 1.46 | |||||||||||||
1962 | 0.45 | 0.59 | 0.53 | 0.74 | 0.29 | 0.04 | 0.07 | 0.63 | 1.04 | 1.46 | 0.71 | 1.80 | 1.80 | |||||||||||||
1963 | 0.96 | 1.44 | 0.56 | 0.57 | 0.53 | 0.32 | 0.28 | 0.17 | 0.36 | 0.46 | 1.10 | 0.50 | 1.44 | |||||||||||||
1964 | 1.50 | 0.28 | ----- | z | 0.08 | 0.20 | 0.47 | 0.37 | 0.10 | 0.10 | 0.17 | 0.42 | 2.49 | ----- | z | |||||||||||
1965 | 1.11 | 0.40 | 0.07 | 1.05 | 0.08 | 0.60 | 0.30 | 0.51 | 0.00 | 0.32 | 0.86 | 0.79 | 1.11 | |||||||||||||
1966 | 2.15 | 0.23 | 0.42 | 0.15 | 0.09 | 0.52 | 0.65 | 0.69 | 0.91 | 0.38 | 1.17 | 0.74 | 2.15 | |||||||||||||
1967 | 2.00 | 0.36 | 0.62 | 0.71 | 0.14 | 0.35 | 0.00 | 0.39 | 0.12 | 1.13 | 0.75 | 0.51 | a | 2.00 | a | |||||||||||
1968 | 0.51 | 1.10 | 0.55 | 0.01 | 0.31 | 0.35 | 0.24 | 0.71 | 0.10 | 0.41 | 0.85 | 1.10 | 1.10 | |||||||||||||
1969 | 0.92 | 0.43 | 0.20 | 0.14 | 0.40 | 0.41 | 0.42 | 0.00 | 0.05 | 0.34 | 0.35 | 1.44 | 1.44 | |||||||||||||
1970 | 1.46 | 1.05 | 0.53 | 0.20 | 0.07 | 0.52 | 0.20 | 0.00 | 0.06 | 1.35 | 1.25 | 1.40 | 1.46 | |||||||||||||
1971 | 2.10 | 0.55 | 1.02 | 0.25 | 0.85 | 0.36 | 0.14 | 0.09 | 0.39 | 0.49 | 2.01 | 1.20 | 2.10 | |||||||||||||
1972 | 2.04 | 0.72 | 1.36 | 0.83 | 0.47 | 0.17 | 0.20 | 0.20 | 0.50 | 0.78 | 0.35 | 2.00 | 2.04 | |||||||||||||
1973 | 0.96 | 0.44 | 0.32 | 0.08 | 0.40 | 0.05 | 0.30 | 0.20 | 0.47 | 1.31 | 2.08 | 0.95 | 2.08 | |||||||||||||
1974 | 1.30 | 1.06 | 1.53 | 1.11 | 0.22 | 0.27 | 0.30 | 0.00 | 0.00 | 0.72 | a | 0.93 | 0.78 | 1.53 | a | |||||||||||
1975 | 2.48 | 0.92 | 1.51 | 0.63 | 0.23 | 0.38 | 0.98 | 0.30 | 0.32 | 1.02 | 0.52 | 0.91 | 2.48 | |||||||||||||
1976 | 1.00 | 0.85 | 0.84 | 0.11 | 0.16 | 0.12 | 0.13 | 0.58 | 0.51 | 0.24 | 0.22 | 0.10 | 1.00 | |||||||||||||
1977 | 0.34 | 0.28 | 0.45 | 0.07 | 0.46 | 1.05 | 0.10 | 0.37 | 1.20 | 0.47 | 1.91 | 1.52 | 1.91 | |||||||||||||
1978 | 0.63 | 0.91 | 0.56 | 0.37 | 0.09 | 0.50 | 0.40 | 0.67 | 0.72 | 0.03 | 0.50 | 0.32 | 0.91 | |||||||||||||
1979 | 2.06 | 0.76 | 0.41 | 0.35 | 1.20 | 0.09 | 0.08 | 0.59 | 0.28 | 1.17 | 0.54 | 0.80 | 2.06 | |||||||||||||
1980 | 1.80 | 0.59 | 0.73 | 0.70 | 0.34 | 0.52 | 0.05 | 0.00 | 0.69 | 0.00 | 2.96 | 2.20 | 2.96 | |||||||||||||
1981 | 0.64 | 1.87 | c | 0.66 | 0.38 | 0.83 | 0.81 | 0.46 | 0.00 | 0.96 | 0.47 | 2.87 | 2.21 | f | 2.87 | i | ||||||||||
1982 | 2.12 | a | 3.32 | 0.87 | i | 0.75 | p | ----- | z | 0.68 | 0.72 | 0.30 | 0.90 | 0.73 | f | 0.53 | c | 1.77 | f | ----- | z | |||||
1983 | 0.51 | j | 0.96 | e | 2.01 | e | 0.22 | c | 0.15 | c | 0.15 | b | 0.14 | a | 0.60 | 0.07 | 0.51 | b | 1.67 | h | 1.60 | f | ----- | z | ||
1984 | 0.31 | d | 0.51 | i | 0.66 | h | 0.56 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.06 | p | 1.38 | 0.64 | f | ----- | z | |
1985 | 0.46 | 0.57 | 0.56 | 0.25 | 0.14 | 0.19 | 1.00 | 0.95 | 0.54 | 0.75 | a | 0.76 | p | 1.00 | f | 1.00 | w | |||||||||
1986 | 1.21 | o | 4.32 | k | 1.91 | h | 0.07 | c | 0.31 | a | 0.09 | c | 0.02 | 0.06 | 0.70 | a | 0.33 | a | 0.68 | 0.23 | k | ----- | z | |||
1987 | 1.43 | 1.39 | g | 0.77 | b | 0.13 | c | 0.32 | c | 0.25 | a | 1.31 | 0.00 | ----- | z | 0.00 | 0.53 | j | 0.88 | ----- | z | |||||
1988 | 1.38 | 0.45 | p | 0.26 | 0.85 | c | 0.42 | i | 0.29 | 0.11 | 0.90 | 0.06 | 0.00 | 1.15 | c | 0.73 | m | ----- | z | |||||||
1989 | 0.93 | l | 0.67 | g | 1.38 | b | 0.79 | d | 0.40 | a | 0.06 | 0.06 | 0.41 | 0.50 | 1.16 | 0.10 | a | 0.23 | ----- | z | ||||||
1990 | 2.03 | f | 0.68 | d | 0.50 | b | 0.00 | s | ----- | z | 0.24 | c | 0.09 | 0.42 | 0.00 | c | ----- | z | ----- | z | ----- | z | ----- | z | ||
1991 | 1.11 | c | ----- | z | 3.29 | w | 0.16 | x | ----- | z | ----- | z | 0.48 | 0.13 | 0.00 | 0.56 | 1.16 | i | 1.50 | k | ----- | z | ||||
1992 | ----- | z | 0.07 | c | ----- | z | ----- | z | 0.07 | 0.00 | y | ----- | z | 0.00 | 0.08 | ----- | z | 2.20 | y | 1.08 | c | ----- | z | |||
1993 | 0.99 | r | 1.50 | i | 1.22 | f | 0.51 | k | 1.00 | b | 1.50 | 0.62 | b | 0.00 | a | 0.00 | ----- | z | 0.00 | a | ----- | z | ----- | z | ||
1994 | 0.60 | f | 0.64 | f | 0.36 | b | 0.72 | 0.67 | 0.00 | w | 0.00 | 0.00 | 0.18 | a | 0.25 | a | 1.43 | a | 0.24 | ----- | z | |||||
1995 | 3.10 | i | 0.87 | a | 1.13 | d | 0.54 | 2.60 | h | 0.66 | 1.17 | 0.00 | ----- | z | 0.15 | 0.71 | 1.31 | m | ----- | z | ||||||
1996 | 1.84 | a | 0.47 | 0.62 | 0.91 | 1.00 | ----- | z | 0.97 | ----- | z | 0.74 | 0.60 | 2.38 | 3.10 | a | ----- | z | ||||||||
1997 | 1.02 | 0.58 | d | 0.32 | 0.70 | 0.25 | 0.58 | 0.23 | ----- | z | 0.46 | 0.55 | 0.75 | 0.80 | ----- | z | ||||||||||
1998 | 1.18 | 1.30 | 0.95 | 0.16 | 0.95 | 0.50 | 0.39 | 0.05 | 0.10 | 0.06 | 2.80 | 1.13 | a | 2.80 | a | |||||||||||
1999 | 1.13 | 1.66 | a | 0.09 | 0.08 | 0.06 | 0.08 | 0.05 | 1.34 | 0.00 | 1.37 | 0.40 | 0.39 | 1.66 | a | |||||||||||
2000 | 1.76 | b | 0.29 | g | 0.24 | f | 1.10 | 0.25 | i | 0.08 | 0.51 | e | 0.12 | 0.00 | 0.55 | g | 0.20 | c | 0.82 | b | ----- | z | ||||
2001 | 0.47 | 0.55 | 0.43 | a | 0.60 | 0.35 | a | 0.57 | 0.44 | 0.07 | 0.24 | 0.30 | 1.13 | 1.12 | f | 1.13 | h | |||||||||
2002 | 1.08 | 0.71 | a | 0.32 | 0.54 | 0.24 | 0.50 | 1.12 | a | 0.12 | 0.33 | 0.28 | a | 1.05 | 1.58 | 1.58 | c | |||||||||
2003 | 0.56 | e | 0.64 | 0.81 | c | 0.31 | 0.38 | a | 0.00 | 0.01 | 2.14 | a | 0.92 | a | 0.13 | 0.77 | e | 1.05 | b | 2.14 | r | |||||
2004 | 1.05 | a | 1.32 | a | 0.60 | b | 0.37 | c | 0.72 | 0.21 | 0.15 | 0.43 | n | 0.05 | 0.56 | a | 0.14 | 1.88 | b | 1.88 | x | |||||
2005 | 0.70 | 0.16 | 0.66 | a | 0.33 | 0.63 | a | 0.12 | b | 0.25 | a | 0.38 | 0.18 | 0.33 | a | 1.52 | 1.53 | 1.53 | f | |||||||
2006 | 1.13 | 1.57 | a | 0.40 | a | 0.55 | e | 0.25 | b | 0.44 | 0.00 | 0.08 | 0.04 | 0.36 | 0.86 | 0.85 | 1.57 | i | ||||||||
2007 | 0.24 | f | 0.75 | 0.13 | 0.65 | 0.38 | 0.33 | 0.42 | 0.34 | b | 0.49 | a | 2.33 | 0.93 | b | 0.80 | 2.33 | k | ||||||||
2008 | 1.76 | f | 2.05 | b | 0.35 | 0.53 | c | 1.09 | 0.30 | 0.01 | 0.11 | 0.00 | 0.74 | 0.89 | 1.11 | 2.05 | k | |||||||||
2009 | 0.52 | 0.51 | 1.18 | 0.24 | 0.89 | a | 0.92 | 0.00 | 0.44 | 0.00 | 0.97 | 0.65 | 0.88 | 1.18 | a | |||||||||||
2010 | 1.60 | a | 0.45 | 0.50 | 0.61 | 0.21 | 0.94 | 0.00 | 0.47 | 1.36 | a | 1.44 | 0.83 | a | 1.86 | 1.86 | c | |||||||||
2011 | 0.59 | 0.74 | 0.72 | 0.45 | 0.44 | c | 0.46 | g | 0.76 | l | 0.27 | h | 0.27 | i | 0.52 | a | 1.07 | c | 1.40 | ----- | z | |||||
2012 | 0.95 | h | 0.64 | j | 0.90 | p | 0.85 | g | 0.50 | f | 0.80 | i | 0.07 | b | 0.03 | 0.00 | 1.11 | d | 2.25 | n | 1.19 | m | ----- | z | ||
2013 | 0.43 | 0.28 | 0.46 | 0.40 | 0.40 | 0.41 | 0.00 | 0.57 | 2.10 | 0.26 | 0.47 | 0.52 | 2.10 | |||||||||||||
2014 | 0.59 | 2.64 | 1.34 | 0.26 | 0.38 | 0.32 | 0.34 | 0.22 | 1.31 | 1.22 | b | 1.36 | 2.90 | 2.90 | b | |||||||||||
2015 | 0.88 | 2.01 | 0.53 | 0.12 | 0.61 | c | 0.32 | 1.72 | a | 0.33 | a | 0.27 | 0.37 | 0.36 | 2.45 | j | 2.45 | o | ||||||||
2016 | 2.09 | l | 1.20 | h | 2.00 | l | 0.40 | a | 0.20 | j | ----- | z | 0.05 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
2017 | ----- | z | ----- | z | 0.91 | a | 0.48 | 0.10 | j | 0.26 | a | 0.00 | c | 0.00 | d | 0.31 | j | 0.93 | f | 1.33 | d | 3.50 | a | ----- | z | |
2018 | 3.50 | e | 4.00 | g | 0.65 | i | 0.75 | e | 0.30 | f | 0.12 | h | 0.00 | l | 0.00 | h | 0.02 | 0.13 | 0.64 | 0.49 | n | ----- | z | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.13 | 0.93 | 0.64 | 0.45 | 0.45 | 0.43 | 0.34 | 0.33 | 0.40 | 0.64 | 0.99 | 1.23 | 1.84 | |||||||||||||
S.D. | 0.65 | 0.61 | 0.38 | 0.31 | 0.30 | 0.37 | 0.40 | 0.38 | 0.43 | 0.47 | 0.68 | 0.82 | 0.58 | |||||||||||||
SKEW | 1.05 | 1.52 | 1.23 | 1.20 | 0.76 | 2.19 | 1.86 | 2.09 | 1.83 | 1.16 | 1.25 | 1.02 | 0.54 | |||||||||||||
MAX | 3.50 | 3.32 | 2.01 | 1.69 | 1.20 | 2.27 | 1.93 | 2.14 | 2.10 | 2.33 | 2.98 | 3.50 | 3.22 | |||||||||||||
MIN | 0.23 | 0.07 | 0.06 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 0.86 | |||||||||||||
YRS | 65 | 67 | 67 | 74 | 68 | 72 | 77 | 73 | 75 | 73 | 74 | 66 | 45 |