YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.05 | t | 0.80 | ----- | z | |
1956 | 0.25 | 0.06 | 0.22 | 0.35 | 0.92 | 0.04 | 0.24 | 0.09 | 0.06 | 0.27 | 0.10 | 0.25 | 0.92 | |||||||||||||
1957 | 0.18 | 0.13 | 0.16 | 0.42 | 0.47 | 1.25 | 0.00 | 0.00 | 0.11 | 0.51 | 0.43 | 0.25 | a | 1.25 | a | |||||||||||
1958 | 0.10 | 0.40 | 0.45 | 0.11 | 0.16 | 0.70 | 0.14 | 0.21 | 0.38 | 0.16 | 0.45 | 0.33 | 0.70 | |||||||||||||
1959 | 0.13 | 0.17 | 0.13 | 0.12 | 0.46 | 0.20 | 0.00 | 0.18 | 0.28 | 0.27 | 0.00 | 0.30 | 0.46 | |||||||||||||
1960 | 0.25 | 0.44 | 0.66 | 0.13 | 0.46 | 0.00 | 0.13 | 0.21 | 0.48 | 0.51 | 0.54 | 0.18 | 0.66 | |||||||||||||
1961 | 0.21 | 0.13 | 0.53 | 0.22 | 0.13 | 0.55 | 0.20 | 0.29 | 1.22 | 0.50 | 0.22 | 0.32 | 1.22 | |||||||||||||
1962 | 0.21 | 0.78 | 0.30 | 0.34 | 0.42 | 0.43 | 0.15 | 0.49 | 0.07 | 0.95 | 0.37 | 0.19 | 0.95 | |||||||||||||
1963 | 0.32 | 0.23 | 0.49 | 0.26 | 0.39 | 0.81 | 0.00 | 0.06 | 0.15 | 0.38 | 0.23 | 0.29 | 0.81 | |||||||||||||
1964 | 0.70 | 0.01 | 0.11 | 1.42 | 0.21 | 0.53 | 0.21 | 0.35 | 0.57 | 0.32 | 0.32 | 0.90 | 1.42 | |||||||||||||
1965 | 0.28 | 0.03 | 0.45 | 0.17 | 1.13 | 0.35 | 0.08 | 0.48 | 0.16 | 0.12 | 0.12 | 0.10 | 1.13 | |||||||||||||
1966 | 0.08 | 0.19 | 0.05 | 0.10 | 0.17 | 0.18 | 0.01 | 0.10 | 0.27 | 0.02 | 0.21 | 0.36 | 0.36 | |||||||||||||
1967 | 0.61 | 0.30 | 0.20 | 0.22 | 0.99 | 1.10 | 0.11 | 0.00 | 0.23 | 0.22 | 1.20 | 0.02 | 1.20 | |||||||||||||
1968 | 0.13 | 0.16 | 0.16 | 0.15 | 0.44 | 0.80 | 0.00 | 0.39 | 0.01 | 0.47 | 0.28 | 0.37 | 0.80 | |||||||||||||
1969 | 0.64 | 0.23 | 0.08 | 0.63 | 0.30 | 0.40 | 0.40 | 0.00 | 0.05 | 0.60 | 0.00 | 0.20 | 0.64 | |||||||||||||
1970 | 0.53 | 0.03 | 0.90 | 0.50 | 0.55 | 0.70 | 0.11 | 0.00 | 0.70 | 0.40 | 0.62 | 0.15 | 0.90 | |||||||||||||
1971 | 0.25 | 0.15 | 0.45 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.30 | 3.30 | ----- | z | ||||
1972 | 1.70 | 0.35 | 0.11 | 0.45 | 0.76 | 0.16 | 0.00 | 0.03 | 0.27 | 0.38 | 0.21 | ----- | z | ----- | z | |||||||||||
1973 | 0.30 | 0.05 | 0.78 | 0.83 | 0.40 | 0.18 | 0.00 | 0.23 | 0.40 | 0.42 | 0.55 | 0.20 | 0.83 | |||||||||||||
1974 | 0.13 | 0.10 | 0.40 | 0.27 | 0.47 | 0.00 | 0.25 | 0.10 | 0.00 | 1.00 | a | 0.15 | 0.23 | 1.00 | a | |||||||||||
1975 | 0.12 | 0.12 | 0.45 | 0.20 | 0.50 | 0.50 | 0.60 | ----- | z | ----- | z | ----- | z | 2.00 | 0.10 | ----- | z | |||||||||
1976 | 0.16 | 0.50 | 0.32 | 0.36 | 0.10 | 1.15 | 1.90 | 0.60 | 0.50 | 0.20 | 0.01 | 0.00 | 1.90 | |||||||||||||
1977 | 0.48 | 0.00 | 0.25 | 0.00 | 0.50 | 0.43 | 0.90 | 0.15 | 0.13 | 0.25 | 0.50 | 0.90 | c | 0.90 | c | |||||||||||
1978 | 0.50 | 0.30 | 0.30 | 0.80 | 0.40 | 0.71 | 0.00 | 0.40 | 0.30 | 0.00 | 0.70 | 0.10 | 0.80 | |||||||||||||
1979 | 0.55 | 0.35 | 0.36 | 0.35 | 1.15 | 0.00 | 0.00 | 1.05 | 0.30 | 0.42 | 0.16 | a | 0.01 | 1.15 | a | |||||||||||
1980 | 0.48 | 0.15 | 0.60 | 0.16 | 1.04 | 0.38 | 0.24 | 0.02 | 0.45 | 0.25 | 0.08 | 0.17 | 1.04 | |||||||||||||
1981 | 0.20 | 0.40 | 0.74 | 0.12 | 0.26 | 0.25 | 0.05 | 0.00 | 0.18 | 0.33 | 0.36 | 0.28 | 0.74 | |||||||||||||
1982 | 0.14 | b | 0.18 | 0.50 | 0.15 | 0.30 | 0.53 | 1.03 | 0.09 | 0.40 | 0.32 | 0.38 | 0.25 | 1.03 | b | |||||||||||
1983 | 0.40 | 0.25 | 0.40 | 0.47 | 0.47 | 0.50 | 0.37 | 0.36 | 0.12 | 0.29 | 0.36 | 0.56 | 0.56 | |||||||||||||
1984 | 0.16 | 0.36 | 0.60 | 0.22 | 1.16 | 0.42 | 0.09 | 0.44 | 0.14 | 0.29 | 0.50 | a | 0.11 | 1.16 | a | |||||||||||
1985 | 0.05 | 0.26 | 0.24 | b | 0.16 | 0.21 | 0.09 | 0.44 | a | 0.00 | 0.45 | 0.19 | c | 0.30 | 0.29 | 0.45 | f | |||||||||
1986 | 0.15 | 0.50 | 1.22 | 0.50 | 0.61 | 0.02 | 0.09 | 0.03 | 0.22 | 0.19 | 0.14 | 0.08 | 1.22 | |||||||||||||
1987 | 0.12 | 0.32 | 0.60 | 0.23 | 1.50 | b | 0.40 | a | 0.15 | a | 0.05 | 0.00 | 0.13 | 0.39 | 0.24 | 1.50 | d | |||||||||
1988 | 0.24 | 0.02 | 0.16 | 0.56 | 0.38 | 0.18 | 0.15 | 0.58 | 0.30 | 0.00 | 0.53 | 0.04 | 0.58 | |||||||||||||
1989 | 0.42 | 0.12 | 0.37 | b | 0.16 | c | 0.92 | b | 0.72 | 0.00 | 0.24 | 0.66 | 0.23 | 0.40 | 0.16 | 0.92 | g | |||||||||
1990 | 0.08 | 0.20 | a | 0.26 | a | 0.64 | 0.37 | 0.04 | 0.28 | 0.65 | 0.08 | 0.15 | 0.21 | a | 0.17 | 0.65 | c | |||||||||
1991 | 0.00 | 0.36 | 0.42 | a | 0.40 | 1.01 | b | 0.65 | 0.17 | 0.61 | 0.74 | 0.95 | a | 0.33 | 0.24 | a | 1.01 | e | ||||||||
1992 | 0.06 | 0.08 | 0.23 | 0.11 | 0.09 | 0.50 | 0.10 | 0.00 | 0.01 | 0.18 | 0.36 | 0.35 | 0.50 | |||||||||||||
1993 | 0.34 | 0.17 | 0.51 | 0.21 | 0.49 | 0.88 | 0.40 | 0.16 | 0.08 | 0.52 | 0.17 | 0.27 | 0.88 | |||||||||||||
1994 | 0.05 | 0.66 | 0.36 | 0.60 | 0.28 | 0.12 | 0.36 | 0.05 | 0.06 | 0.08 | 0.23 | 0.59 | 0.66 | |||||||||||||
1995 | 0.37 | 0.38 | 0.21 | 0.25 | 1.01 | 0.52 | 0.45 | 0.03 | 0.14 | 0.05 | 0.28 | 0.40 | 1.01 | |||||||||||||
1996 | 0.30 | 0.47 | 0.61 | 0.48 | 0.63 | 0.26 | 0.15 | 0.05 | 0.17 | 0.46 | 0.24 | 0.54 | 0.63 | |||||||||||||
1997 | 0.50 | 0.17 | 0.22 | 0.40 | 0.68 | 0.71 | 0.15 | 0.00 | 0.15 | 0.21 | 0.07 | 0.35 | 0.71 | |||||||||||||
1998 | 0.20 | 0.19 | 0.47 | 0.74 | 0.62 | 0.49 | 0.25 | 0.00 | 0.41 | 0.61 | 0.14 | 0.32 | 0.74 | |||||||||||||
1999 | 0.33 | 0.37 | 0.08 | 0.05 | 0.28 | 0.55 | 0.02 | 0.07 | 0.00 | 0.05 | 0.10 | 0.25 | 0.55 | |||||||||||||
2000 | 0.30 | 0.14 | 0.24 | 0.48 | 0.28 | 0.04 | 0.01 | 0.30 | 0.37 | 1.21 | 0.11 | 0.08 | 1.21 | |||||||||||||
2001 | 0.14 | 0.22 | 0.35 | 0.33 | 0.44 | 0.06 | 0.28 | 0.00 | 0.18 | 0.06 | 0.39 | d | 0.40 | d | 0.44 | h | ||||||||||
2002 | 0.41 | e | 0.20 | 0.11 | 0.45 | b | 0.37 | a | 0.27 | 0.00 | 0.00 | 0.20 | 0.14 | 0.26 | 0.23 | f | 0.45 | n | ||||||||
2003 | 0.24 | f | 0.11 | 0.20 | 0.20 | a | 1.01 | a | 0.30 | 1.02 | b | 0.34 | a | 0.10 | 0.03 | 0.23 | c | 0.52 | e | 1.02 | s | |||||
2004 | 0.06 | d | 0.17 | b | 0.06 | 0.27 | 0.47 | g | 0.33 | d | 0.02 | c | 0.41 | d | 0.52 | c | 0.43 | d | 0.35 | b | 0.30 | b | ----- | z | ||
2005 | 0.04 | b | 0.17 | 0.29 | e | 0.36 | b | 0.55 | b | 0.37 | b | 0.06 | 0.14 | d | 0.20 | b | 0.70 | 0.36 | a | 0.30 | c | 0.70 | w | |||
2006 | 0.26 | e | 0.32 | h | 0.20 | d | 1.00 | b | 0.47 | k | 0.08 | e | 0.21 | 0.00 | 0.04 | 0.15 | a | 0.24 | d | 0.15 | ----- | z | ||||
2007 | 0.20 | 0.06 | b | 0.02 | 0.48 | e | 0.06 | b | 0.49 | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | y | 0.16 | f | ----- | z | ----- | z |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | q | 0.15 | 0.06 | 0.17 | 0.17 | a | 0.13 | ----- | z | ||||
2010 | 0.20 | 0.09 | 0.68 | 0.20 | 0.52 | 0.45 | 0.10 | 0.11 | 0.30 | 0.77 | 0.15 | 0.16 | 0.77 | |||||||||||||
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 |
2018 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2019 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.29 | 0.23 | 0.36 | 0.36 | 0.54 | 0.42 | 0.23 | 0.20 | 0.26 | 0.34 | 0.33 | 0.34 | 0.90 | |||||||||||||
S.D. | 0.26 | 0.17 | 0.24 | 0.26 | 0.33 | 0.30 | 0.34 | 0.23 | 0.24 | 0.27 | 0.31 | 0.46 | 0.31 | |||||||||||||
SKEW | 3.15 | 1.09 | 1.11 | 1.67 | 0.86 | 0.68 | 2.97 | 1.43 | 1.64 | 1.23 | 3.40 | 5.20 | 0.83 | |||||||||||||
MAX | 1.70 | 0.78 | 1.22 | 1.42 | 1.50 | 1.25 | 1.90 | 1.05 | 1.22 | 1.21 | 2.00 | 3.30 | 1.90 | |||||||||||||
MIN | 0.00 | 0.00 | 0.02 | 0.00 | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.36 | |||||||||||||
YRS | 52 | 52 | 53 | 52 | 50 | 52 | 52 | 51 | 51 | 51 | 53 | 52 | 40 |