YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1955 | ----- | z | ----- | z | 0.41 | 0.29 | 0.33 | 0.00 | 0.00 | 0.00 | 0.02 | 0.08 | 0.34 | 1.64 | ----- | z | ||||||||||
1956 | 0.81 | 0.39 | 0.04 | 0.60 | 0.31 | 0.00 | 0.01 | 0.00 | 0.78 | 0.27 | 0.01 | 0.11 | 0.81 | |||||||||||||
1957 | 0.88 | 0.76 | 0.65 | 0.68 | 0.61 | 0.00 | 0.00 | 0.00 | 0.02 | 0.43 | 0.08 | 0.85 | 0.88 | |||||||||||||
1958 | 0.78 | 1.87 | 0.97 | 1.47 | 0.52 | 0.22 | 0.00 | 0.00 | 0.02 | 0.07 | 0.00 | 0.25 | 1.87 | |||||||||||||
1959 | 1.10 | 1.00 | 0.10 | 0.37 | 0.00 | 0.00 | 0.00 | 0.00 | 1.25 | 0.00 | 0.01 | 0.85 | 1.25 | |||||||||||||
1960 | 0.46 | 0.75 | 0.78 | 0.47 | 0.17 | 0.00 | 0.03 | 0.00 | 0.00 | 0.02 | 1.00 | 0.50 | 1.00 | |||||||||||||
1961 | 1.33 | 0.37 | 0.45 | 0.36 | 0.25 | 0.04 | 0.00 | 0.00 | 0.20 | 0.03 | 0.96 | 0.50 | 1.33 | |||||||||||||
1962 | 0.40 | 1.04 | 0.32 | 0.02 | 0.00 | 0.00 | 0.00 | 0.05 | 0.00 | 3.03 | 0.15 | 0.49 | 3.03 | |||||||||||||
1963 | 1.12 | 1.05 | 0.95 | 1.00 | 0.21 | 0.03 | 0.00 | 0.00 | 0.10 | 0.29 | 1.06 | 0.10 | 1.12 | |||||||||||||
1964 | 2.00 | 0.01 | 0.63 | 0.14 | 0.04 | 0.78 | 0.00 | 0.15 | 0.00 | 1.03 | 0.49 | 0.65 | 2.00 | |||||||||||||
1965 | 0.62 | 0.34 | 0.38 | 0.56 | 0.04 | 0.00 | 0.03 | 0.28 | 0.00 | 0.05 | 0.80 | 0.87 | 0.87 | |||||||||||||
1966 | 1.25 | 0.27 | 0.24 | 0.22 | 0.20 | 0.06 | 0.20 | 0.03 | 0.08 | 0.00 | 0.59 | 1.05 | 1.25 | |||||||||||||
1967 | 1.50 | 0.25 | 0.78 | 0.60 | 0.06 | 0.22 | 0.00 | 0.00 | 0.01 | 0.09 | 0.50 | 0.36 | 1.50 | |||||||||||||
1968 | 1.52 | 0.32 | 0.57 | 0.38 | 0.10 | 0.00 | 0.00 | 0.45 | 0.00 | 0.10 | 0.92 | 0.74 | 1.52 | |||||||||||||
1969 | 1.24 | 1.08 | 0.42 | 0.34 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.63 | 0.25 | 1.79 | 1.79 | |||||||||||||
1970 | 1.19 | 0.13 | 0.65 | 0.15 | 0.00 | 0.17 | 0.00 | 0.00 | 0.05 | 0.17 | 2.00 | 0.66 | 2.00 | |||||||||||||
1971 | 0.30 | 0.10 | 0.80 | 0.39 | 0.39 | 0.00 | 0.00 | 0.00 | 0.02 | 0.03 | 0.21 | 0.93 | 0.93 | |||||||||||||
1972 | 0.41 | 0.80 | 0.03 | 0.20 | 0.10 | 0.12 | 0.00 | 0.00 | 0.30 | 1.22 | 1.11 | 0.54 | 1.22 | |||||||||||||
1973 | ----- | z | 1.12 | 0.60 | 0.14 | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 0.70 | 1.46 | 0.93 | ----- | z | |||||||||||
1974 | 0.29 | 0.18 | 0.53 | 0.43 | 0.00 | 0.07 | 0.06 | 0.00 | 0.00 | 0.37 | 0.10 | 0.86 | 0.86 | |||||||||||||
1975 | 0.43 | 0.52 | 1.00 | 0.44 | 0.00 | 0.03 | 0.12 | 0.05 | 0.00 | 0.37 | 0.05 | 0.10 | 1.00 | |||||||||||||
1976 | 0.15 | 0.30 | 0.37 | 0.19 | 0.00 | 0.07 | 0.00 | 0.23 | 0.85 | 0.48 | 0.19 | 0.61 | 0.85 | |||||||||||||
1977 | 0.36 | 0.28 | 1.07 | 0.23 | 1.07 | 0.00 | 0.00 | 0.00 | 0.13 | 0.02 | 0.53 | 0.74 | 1.07 | |||||||||||||
1978 | 0.99 | 0.97 | 0.94 | 0.43 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 0.01 | 0.84 | 0.10 | 0.99 | |||||||||||||
1979 | 1.48 | 0.95 | 0.60 | 0.51 | 0.00 | 0.00 | 0.08 | 0.00 | 0.00 | 0.00 | d | 0.56 | 1.27 | 1.48 | d | |||||||||||
1980 | 0.84 | 1.01 | ----- | z | 0.45 | 0.00 | c | 0.00 | 0.40 | 0.00 | 0.00 | 0.00 | 0.12 | 0.53 | ----- | z | ||||||||||
1981 | 0.83 | 0.15 | 0.52 | 0.00 | b | 0.03 | 0.00 | 0.00 | 0.00 | 0.04 | 0.34 | 2.01 | 0.01 | 2.01 | b | |||||||||||
1982 | 2.80 | 0.72 | 1.10 | 0.62 | 0.00 | 0.00 | 0.00 | 0.00 | 0.42 | 0.57 | 1.10 | 1.20 | 2.80 | |||||||||||||
1983 | 1.40 | 0.59 | 1.17 | 1.44 | 0.35 | 0.00 | 0.00 | 0.04 | 0.63 | 0.05 | 1.20 | 0.65 | 1.44 | |||||||||||||
1984 | 0.10 | 0.48 | 0.45 | 0.14 | 0.01 | 0.00 | 0.00 | 0.01 | 0.04 | 0.76 | 1.06 | 0.39 | 1.06 | |||||||||||||
1985 | 0.17 | 0.81 | 0.47 | 0.22 | 0.00 | a | 0.22 | b | 0.00 | a | 0.00 | 0.16 | 0.36 | 1.03 | 0.90 | 1.03 | d | |||||||||
1986 | 0.62 | b | 1.86 | a | 0.97 | 0.25 | 0.10 | a | 0.00 | 0.02 | 0.00 | a | 0.32 | 0.05 | a | 0.00 | 0.15 | 1.86 | f | |||||||
1987 | 0.34 | 1.88 | 0.46 | 0.16 | 0.06 | 0.00 | 0.00 | b | 0.00 | a | 0.00 | 0.37 | 0.32 | 0.64 | 1.88 | c | ||||||||||
1988 | 0.53 | 0.38 | 0.35 | 0.27 | 0.32 | 0.44 | 0.00 | 0.00 | 0.00 | 0.45 | g | 0.59 | 0.50 | 0.59 | g | |||||||||||
1989 | 0.38 | 0.60 | 0.42 | 0.15 | c | 0.14 | 0.15 | 0.00 | 0.04 | 0.66 | 0.63 | 0.91 | a | 0.00 | 0.91 | d | ||||||||||
1990 | 0.52 | 0.92 | 0.25 | 0.20 | 0.98 | 0.00 | 0.00 | 0.00 | 0.00 | 0.07 | 0.11 | 0.96 | 0.98 | |||||||||||||
1991 | 0.10 | 1.05 | 0.80 | 0.15 | 0.15 | ----- | z | 0.00 | 0.03 | 0.00 | 1.29 | 0.11 | 0.69 | ----- | z | |||||||||||
1992 | 0.46 | 0.99 | 0.96 | 0.37 | 0.00 | 0.15 | 0.00 | 0.00 | 0.00 | 0.24 | 0.10 | 0.74 | 0.99 | |||||||||||||
1993 | 2.08 | 0.81 | 0.60 | 0.12 | 0.27 | 0.07 | 0.00 | 0.00 | 0.00 | 0.17 | 1.06 | 0.43 | 2.08 | |||||||||||||
1994 | 0.31 | 0.81 | 0.13 | 0.40 | 0.80 | 0.00 | 0.00 | 0.00 | 0.01 | 0.42 | 2.00 | 0.39 | 2.00 | |||||||||||||
1995 | 1.90 | 0.05 | 1.10 | 0.09 | 0.55 | 0.58 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2.18 | 2.18 | |||||||||||||
1996 | 1.17 | 0.68 | 0.67 | 0.73 | 1.10 | 0.00 | 0.00 | 0.00 | 0.00 | 0.60 | 2.34 | 0.93 | 2.34 | |||||||||||||
1997 | 1.60 | 0.08 | 0.13 | 0.00 | 0.32 | 0.31 | 0.00 | 0.01 | 0.00 | 0.39 | 1.09 | 0.58 | 1.60 | |||||||||||||
1998 | 0.79 | 2.33 | 0.38 | 0.26 | 0.53 | 0.06 | 0.00 | 0.00 | 0.34 | 0.58 | 0.32 | 0.40 | 2.33 | |||||||||||||
1999 | 0.56 | 0.65 | 0.53 | 0.39 | 0.00 | 0.00 | 0.00 | 0.00 | 0.16 | 0.10 | ----- | z | 0.50 | ----- | z | |||||||||||
2000 | 1.65 | 1.18 | ----- | z | 0.90 | 0.34 | 0.07 | ----- | z | 0.00 | 0.08 | 0.45 | 0.28 | ----- | z | ----- | z | |||||||||
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | a | 0.00 | ----- | z | ----- | z | ----- | z | |
2002 | ----- | z | ----- | z | ----- | z | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.76 | 1.60 | ----- | z | |||||||||
2003 | ----- | z | 0.00 | 0.84 | 0.80 | ----- | z | ----- | z | 0.00 | 0.35 | 0.00 | 0.00 | 0.55 | 0.60 | ----- | z | |||||||||
2004 | 1.11 | 1.15 | a | ----- | z | ----- | z | ----- | z | 0.00 | 0.00 | 0.00 | 0.00 | 1.75 | 0.75 | 1.10 | ----- | z | ||||||||
2005 | 1.90 | 1.35 | 1.06 | 0.68 | 0.23 | 0.09 | 0.00 | 0.00 | 0.00 | 0.00 | b | 0.30 | 2.20 | 2.20 | b | |||||||||||
2006 | 0.95 | 0.64 | 0.60 | m | 0.58 | 0.00 | b | 0.00 | 0.00 | 0.00 | 0.00 | 0.09 | 0.35 | 1.02 | 1.02 | o | ||||||||||
2007 | 0.16 | 0.75 | p | ----- | z | 0.80 | ----- | z | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.88 | ----- | z | |||||||||
2008 | 1.80 | 0.54 | a | ----- | z | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.08 | 0.62 | ----- | z | ----- | z | |||||||||
2009 | ----- | z | 1.20 | b | 1.40 | ----- | z | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | ||||||
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | a | ----- | z | ----- | z | ----- | z | ||||
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | 0.00 | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | |||
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | ----- | z | 0.00 | ----- | z | 1.17 | a | 1.90 | ----- | z | |||
2013 | 0.33 | 0.26 | 0.09 | 0.46 | 0.00 | 0.04 | 0.00 | 0.00 | 0.50 | 0.00 | 0.65 | 0.23 | 0.65 | |||||||||||||
2014 | 0.12 | 1.25 | 0.34 | 0.64 | 0.00 | 0.00 | 0.00 | 0.01 | 0.25 | 0.27 | 0.39 | 2.81 | 2.81 | |||||||||||||
2015 | 0.02 | 0.88 | 0.20 | 0.39 | 0.01 | 0.50 | 0.00 | 0.00 | 0.01 | 0.00 | 0.78 | 0.42 | 0.88 | |||||||||||||
2016 | 1.04 | 0.41 | 0.94 | 0.85 | 0.09 | 0.00 | 0.00 | 0.00 | 0.00 | 0.46 | ----- | z | 0.73 | ----- | z | |||||||||||
2017 | 1.23 | 1.67 | 0.47 | 0.00 | 0.00 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
2018 | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | 0.00 | x | ----- | z | 0.00 | ----- | z | 0.00 | w | 0.45 | a | 0.90 | b | ----- | z | ||
2019 | 1.14 | 0.98 | 0.51 | 0.09 | b | 0.66 | 0.00 | d | 0.00 | c | 0.00 | 0.10 | 0.00 | 0.00 | 0.43 | 1.14 | i | |||||||||
2020 | 0.34 | 0.00 | 0.39 | a | 0.43 | 0.09 | 0.00 | 0.00 | a | 0.04 | 0.00 | 0.00 | 0.02 | 0.22 | 0.43 | b | ||||||||||
2021 | 0.72 | 0.59 | 0.14 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.89 | 0.74 | 0.58 | 0.39 | 0.20 | 0.07 | 0.02 | 0.03 | 0.12 | 0.33 | 0.64 | 0.78 | 1.47 | |||||||||||||
S.D. | 0.61 | 0.52 | 0.33 | 0.32 | 0.28 | 0.16 | 0.06 | 0.08 | 0.24 | 0.51 | 0.58 | 0.58 | 0.64 | |||||||||||||
SKEW | 0.75 | 0.80 | 0.31 | 1.29 | 1.75 | 2.80 | 5.25 | 3.65 | 2.69 | 3.15 | 1.04 | 1.34 | 0.68 | |||||||||||||
MAX | 2.80 | 2.33 | 1.40 | 1.47 | 1.10 | 0.78 | 0.40 | 0.45 | 1.25 | 3.03 | 2.34 | 2.81 | 3.03 | |||||||||||||
MIN | 0.02 | 0.00 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.43 | |||||||||||||
YRS | 57 | 59 | 55 | 60 | 59 | 60 | 63 | 64 | 64 | 60 | 59 | 59 | 43 |