YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.53 | u | 0.52 | 1.08 | ----- | z | ||
1952 | 0.15 | 0.01 | 0.78 | 0.65 | 0.00 | 0.00 | 0.53 | 0.25 | 0.40 | 0.00 | 0.55 | 0.60 | 0.78 | |||||||||||||
1953 | 0.04 | 0.00 | 0.19 | 0.32 | 0.00 | 0.05 | 0.29 | 0.00 | 0.00 | 0.60 | 0.06 | 0.67 | 0.67 | |||||||||||||
1954 | 0.53 | 0.57 | 0.80 | 0.00 | 0.78 | 0.88 | 0.12 | 0.34 | 0.06 | 0.37 | 0.70 | 0.34 | 0.88 | |||||||||||||
1955 | 1.10 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.51 | r | 0.73 | 0.00 | 0.02 | 0.80 | 0.02 | ----- | z | ||||||
1956 | 0.04 | 2.05 | 0.02 | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | i | 0.00 | 0.09 | 0.00 | 0.00 | ----- | z | |||||||
1957 | 0.03 | 0.29 | 0.17 | 0.20 | 0.18 | 0.00 | 0.37 | 0.86 | 0.00 | 0.55 | 0.63 | 0.18 | 0.86 | |||||||||||||
1958 | 0.45 | 0.70 | 0.58 | 0.40 | 1.35 | 0.00 | 0.00 | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||||||
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | v | 1.72 | 0.20 | ----- | z | 0.00 | b | 0.57 | ----- | z | |||
1960 | 0.42 | 0.26 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.68 | 1.04 | 0.73 | ----- | z | ----- | z | ||||
1961 | 0.51 | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | s | 0.45 | 0.42 | 0.00 | ----- | z | ----- | z | ----- | z | |||||
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | r | 0.00 | 0.60 | 0.70 | ----- | z | ----- | z | ----- | z | ----- | z | |||
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.55 | 0.00 | a | 0.23 | 0.18 | ----- | z | |||
1967 | 0.48 | 0.00 | 0.00 | 0.63 | ----- | z | 0.13 | 0.50 | 0.07 | 0.33 | 0.00 | 1.63 | 0.62 | ----- | z | |||||||||||
1968 | 0.08 | 0.52 | 0.42 | 0.08 | 0.02 | 0.05 | 0.38 | 0.08 | 0.01 | 0.13 | 0.20 | 0.12 | 0.52 | |||||||||||||
1969 | 0.38 | 1.02 | 0.13 | 0.00 | 0.35 | 0.13 | 0.06 | 0.15 | 0.20 | 0.00 | 0.25 | 0.00 | 1.02 | |||||||||||||
1970 | 0.21 | 0.40 | 0.58 | 0.00 | 0.00 | 0.01 | 0.65 | 0.45 | 0.10 | 0.00 | 0.47 | 0.28 | 0.65 | |||||||||||||
1971 | 0.34 | 0.80 | 0.03 | 0.08 | 0.58 | 0.00 | 0.07 | 0.28 | 0.02 | 0.36 | 0.20 | 1.24 | 1.24 | |||||||||||||
1972 | 0.00 | 0.00 | 0.00 | 0.18 | 0.03 | 0.17 | 0.00 | 0.30 | 1.01 | 0.55 | 0.68 | 0.18 | 1.01 | |||||||||||||
1973 | 0.54 | 0.65 | 0.74 | 0.12 | 0.08 | 0.12 | 0.42 | 0.50 | 0.00 | 0.30 | 0.31 | 0.02 | 0.74 | |||||||||||||
1974 | 0.48 | 0.00 | 0.21 | 0.33 | 0.03 | 0.00 | 0.02 | 0.25 | 0.65 | 0.63 | 0.45 | 0.35 | 0.65 | |||||||||||||
1975 | 0.21 | 0.32 | 0.54 | b | 0.54 | 0.03 | 0.01 | 0.08 | 0.33 | 0.11 | 0.45 | 0.57 | 0.22 | 0.57 | b | |||||||||||
1976 | 0.00 | 0.68 | 0.14 | 0.35 | 0.16 | 0.00 | 0.29 | 0.18 | 0.32 | 0.56 | 0.12 | 0.02 | 0.68 | |||||||||||||
1977 | 0.39 | 0.00 | 0.41 | 0.09 | 0.60 | 0.33 | 0.31 | 0.38 | 0.04 | 0.04 | 0.00 | 0.63 | 0.63 | |||||||||||||
1978 | 0.53 | 0.52 | 0.52 | 0.31 | 0.46 | 0.00 | 1.00 | 0.00 | 0.53 | 0.39 | 0.51 | 0.49 | 1.00 | |||||||||||||
1979 | 0.61 | 0.38 | 0.98 | 0.03 | 0.18 | 0.00 | 0.15 | 0.15 | 0.00 | 0.31 | 0.27 | 0.15 | 0.98 | |||||||||||||
1980 | 1.11 | 0.97 | 0.35 | 0.29 | 0.14 | 0.00 | 0.28 | 0.43 | 0.04 | 0.49 | 0.26 | 0.12 | 1.11 | |||||||||||||
1981 | 0.21 | 0.25 | 0.63 | 0.24 | 0.14 | 0.11 | 0.20 | 0.55 | 0.20 | 0.09 | 0.71 | 0.01 | 0.71 | |||||||||||||
1982 | 0.39 | 0.21 | 0.82 | 0.07 | 0.11 | 0.02 | 0.11 | 0.92 | 0.49 | 0.13 | 0.56 | 0.24 | 0.92 | |||||||||||||
1983 | 0.39 | 0.25 | 0.61 | 0.28 | 0.02 | 0.00 | 0.32 | 0.73 | 0.40 | 1.21 | 0.77 | 0.22 | 1.21 | |||||||||||||
1984 | 0.01 | 0.10 | 0.50 | 0.06 | 0.00 | 0.00 | 0.92 | 0.05 | 0.00 | 0.43 | 0.37 | 0.53 | 0.92 | |||||||||||||
1985 | 0.40 | 0.11 | 0.42 | 0.02 | 0.02 | 0.16 | 0.78 | 0.00 | 0.42 | 0.44 | 0.52 | 0.18 | 0.78 | |||||||||||||
1986 | 0.20 | 0.50 | 0.48 | 0.26 | 0.18 | 0.00 | 0.17 | 0.34 | 0.51 | 0.20 | 0.47 | 0.21 | 0.51 | |||||||||||||
1987 | 0.61 | 0.28 | 0.57 | 0.16 | 0.13 | 0.47 | 0.28 | 0.42 | 0.11 | 0.74 | 0.39 | 0.24 | 0.74 | |||||||||||||
1988 | 1.01 | 0.19 | 0.05 | 0.40 | 0.15 | 0.14 | 0.24 | 0.42 | 0.11 | 0.03 | 0.22 | 0.43 | 1.01 | |||||||||||||
1989 | 0.56 | 0.28 | 0.31 | 0.00 | 0.20 | 0.02 | 0.96 | 0.84 | 0.10 | 0.52 | 0.00 | 0.00 | 0.96 | |||||||||||||
1990 | 0.23 | 0.81 | 0.05 | 0.39 | 0.38 | 0.26 | 0.61 | 0.65 | 0.80 | 0.21 | 0.64 | 0.05 | 0.81 | |||||||||||||
1991 | 0.40 | 0.27 | 0.45 | 0.00 | 0.39 | 0.10 | 1.25 | 0.12 | 0.16 | 0.62 | 0.20 | 0.32 | 1.25 | |||||||||||||
1992 | 0.73 | 0.56 | 0.54 | 0.00 | 0.40 | 0.03 | 0.09 | 0.15 | 0.05 | 0.41 | 0.01 | 0.62 | 0.73 | |||||||||||||
1993 | 0.43 | 0.80 | ----- | z | 0.13 | 0.13 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.33 | 0.18 | ----- | z | ||||||
1994 | 0.23 | 0.68 | 1.85 | 0.19 | 0.32 | 0.03 | 0.12 | 0.46 | 0.08 | 0.38 | 0.43 | 0.35 | 1.85 | |||||||||||||
1995 | ----- | z | ----- | z | ----- | z | 0.70 | a | 0.40 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
1996 | ----- | z | 0.45 | l | 0.18 | 0.04 | ----- | z | 0.00 | 0.06 | 0.11 | 0.02 | 0.41 | 0.96 | h | 0.40 | ----- | z | ||||||||
1997 | 0.64 | 0.36 | 0.00 | ----- | z | 0.05 | 0.04 | 0.03 | ----- | z | 0.58 | 0.08 | 0.55 | 0.15 | ----- | z | ||||||||||
1998 | 0.33 | 0.95 | 0.23 | 0.14 | 0.18 | 0.32 | 0.33 | 1.11 | 0.68 | a | 0.47 | 0.45 | 0.00 | a | 1.11 | b | ||||||||||
1999 | 0.42 | 0.06 | 0.00 | 0.28 | 0.01 | 0.55 | 0.08 | b | 0.16 | 0.20 | 0.00 | 0.00 | 0.00 | 0.55 | b | |||||||||||
2000 | 0.10 | 0.60 | 0.15 | 0.05 | 0.02 | 0.67 | 0.00 | 0.50 | 0.00 | 0.44 | 0.08 | 0.05 | 0.67 | |||||||||||||
2001 | 0.63 | 0.60 | 0.89 | 0.24 | b | 0.03 | 0.01 | 0.35 | b | 0.40 | 0.02 | 0.00 | 0.07 | 0.48 | 0.89 | d | ||||||||||
2002 | 0.01 | 0.00 | 0.28 | 0.00 | 0.00 | 0.00 | 0.01 | 0.00 | 0.28 | 0.31 | 0.08 | 0.12 | 0.31 | |||||||||||||
2003 | 0.05 | 0.72 | 0.66 | 0.35 | 0.08 | 0.00 | 0.02 | 0.05 | 0.50 | 0.00 | 0.20 | 0.79 | 0.79 | |||||||||||||
2004 | 0.10 | 0.55 | 0.05 | 0.54 | 0.00 | 0.03 | 0.59 | 0.11 | 0.21 | 1.45 | 0.90 | r | 1.17 | 1.45 | r | |||||||||||
2005 | 0.67 | b | 0.62 | a | 0.24 | 0.53 | 0.14 | 0.31 | b | 0.17 | 0.51 | a | 0.05 | 0.43 | 0.24 | 0.05 | b | 0.67 | h | |||||||
2006 | 0.17 | 0.15 | 0.64 | a | 0.18 | 0.02 | 0.07 | 0.78 | 0.00 | 0.10 | 0.35 | 0.00 | 0.15 | 0.78 | a | |||||||||||
2007 | 0.15 | 0.13 | 0.01 | 0.15 | 0.00 | 0.00 | 0.06 | 0.38 | 1.38 | 0.00 | 0.01 | 1.75 | 1.75 | |||||||||||||
2008 | 0.38 | 0.62 | b | 0.03 | 0.00 | 0.18 | 0.00 | 0.60 | 0.64 | 0.00 | 0.28 | 0.18 | 0.43 | 0.64 | b | |||||||||||
2009 | 0.45 | 0.48 | b | 0.00 | 0.47 | 0.00 | 0.05 | 0.03 | 0.09 | 0.03 | e | 0.00 | d | 0.21 | c | 0.68 | b | 0.68 | p | |||||||
2010 | 0.37 | 0.80 | 0.56 | 0.18 | 0.00 | b | 0.00 | 0.00 | 0.50 | 0.01 | 0.49 | 0.06 | 1.71 | 1.71 | b | |||||||||||
2011 | 0.06 | 0.72 | 0.20 | 0.12 | 0.06 | i | 0.00 | 0.06 | 0.19 | a | 0.09 | 0.98 | 0.57 | 0.13 | b | 0.98 | l | |||||||||
2012 | 0.26 | 0.27 | 0.15 | 0.08 | 0.00 | a | 0.00 | 0.62 | 0.08 | r | 1.35 | 1.49 | 0.20 | 0.25 | 1.49 | s | ||||||||||
2013 | 0.20 | c | 0.29 | d | 0.41 | 0.46 | g | 0.03 | 0.00 | a | 0.30 | l | 0.25 | 1.20 | a | 0.25 | 0.50 | 0.21 | ----- | z | ||||||
2014 | 0.27 | a | 0.17 | 0.13 | 0.24 | 0.03 | 0.00 | 0.04 | 0.68 | a | 1.47 | j | 0.00 | 0.30 | c | 0.33 | 1.47 | o | ||||||||
2015 | 0.22 | 0.06 | 0.55 | 0.12 | 0.34 | 0.14 | c | 0.31 | 0.22 | 0.16 | 0.32 | 0.22 | 0.22 | 0.55 | c | |||||||||||
2016 | 0.68 | 0.50 | 0.19 | 1.11 | 0.14 | 0.04 | 0.33 | 0.42 | 0.07 | 0.70 | 0.32 | 0.70 | 1.11 | |||||||||||||
2017 | 0.56 | 0.18 | 0.00 | w | ----- | z | ----- | z | ----- | z | 0.73 | n | 0.45 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
2018 | ----- | z | 0.34 | b | 0.34 | 0.49 | a | 0.26 | 0.00 | 0.50 | 0.24 | 0.08 | k | 0.71 | g | 0.47 | a | 0.08 | ----- | z | ||||||
2019 | 0.44 | b | 1.50 | 0.52 | 0.22 | 0.98 | 0.11 | a | 0.25 | 0.00 | 0.00 | 0.00 | 1.39 | 0.31 | 1.50 | c | ||||||||||
2020 | 0.02 | 0.71 | 1.10 | 0.28 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.36 | 0.45 | 0.39 | 0.24 | 0.19 | 0.10 | 0.31 | 0.36 | 0.28 | 0.36 | 0.37 | 0.36 | 0.90 | |||||||||||||
S.D. | 0.26 | 0.38 | 0.34 | 0.22 | 0.26 | 0.18 | 0.30 | 0.32 | 0.35 | 0.35 | 0.32 | 0.38 | 0.34 | |||||||||||||
SKEW | 0.80 | 1.54 | 1.48 | 1.44 | 2.35 | 2.57 | 1.17 | 1.60 | 1.56 | 1.33 | 1.56 | 1.88 | 1.12 | |||||||||||||
MAX | 1.11 | 2.05 | 1.85 | 1.11 | 1.35 | 0.88 | 1.25 | 1.72 | 1.38 | 1.49 | 1.63 | 1.75 | 1.85 | |||||||||||||
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 | 0.31 | |||||||||||||
YRS | 60 | 60 | 57 | 55 | 54 | 55 | 55 | 58 | 59 | 58 | 59 | 60 | 43 |