| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1950 | 0.00 | z | 0.00 | z | 7.45 | a | 4.07 | 1.15 | 1.63 | 1.32 | 0.91 | 2.01 | 8.86 | 10.06 | 8.62 | 46.08 | ||||||||||
| 1951 | 9.01 | 7.55 | 5.21 | 1.01 | 2.72 | 0.29 | 0.20 | 0.57 | 2.19 | 7.79 | 8.75 | 6.49 | 51.78 | |||||||||||||
| 1952 | 4.75 | 5.12 | 3.37 | 1.94 | 0.91 | 1.56 | 0.27 | 0.67 | 0.35 | 1.47 | 1.63 | 7.53 | 29.57 | |||||||||||||
| 1953 | 14.59 | 3.32 | 4.18 | 2.85 | 3.77 | 3.26 | 0.28 | 2.37 | a | 2.41 | 4.38 | 8.34 | 10.37 | 60.12 | ||||||||||||
| 1954 | 11.59 | 6.50 | 3.07 | 4.19 | 1.76 | 4.36 | 0.77 | 3.00 | 1.84 | 3.00 | 7.62 | 6.27 | 53.97 | |||||||||||||
| 1955 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1956 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1957 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1958 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1959 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1960 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1961 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1962 | 2.28 | 3.78 | 4.70 | 4.08 | 3.33 | 1.27 | 0.32 | 2.73 | 2.48 | 3.81 | 10.60 | 3.02 | 42.40 | |||||||||||||
| 1963 | 2.99 | 4.56 | 4.95 | 3.95 | 1.30 | 2.16 | 2.36 | 1.43 | 2.14 | 4.86 | 6.54 | 4.73 | 41.97 | |||||||||||||
| 1964 | 14.20 | 2.38 | 4.71 | 3.17 | 1.22 | 0.00 | z | 0.00 | z | 1.33 | 2.03 | 1.93 | 8.63 | 10.62 | 50.22 | |||||||||||
| 1965 | 7.68 | 3.13 | 0.80 | 3.07 | 1.45 | 0.73 | 0.00 | z | 1.67 | b | 0.52 | 4.00 | 5.49 | 7.08 | 35.62 | |||||||||||
| 1966 | 7.16 | 3.60 | 6.29 | 1.85 | 1.72 | 2.66 | 1.73 | 0.27 | 1.36 | 3.20 | 5.17 | 8.75 | 43.76 | |||||||||||||
| 1967 | 11.74 | 3.33 | 4.88 | 3.29 | 1.06 | 2.10 | 0.05 | 0.13 | 1.47 | 6.82 | 3.58 | 4.73 | 43.18 | |||||||||||||
| 1968 | 6.13 | 6.30 | a | 5.42 | 3.09 | 3.00 | 3.25 | 0.57 | 5.38 | 3.19 | 5.69 | 6.33 | 8.06 | 56.41 | ||||||||||||
| 1969 | 7.58 | 3.10 | 2.30 | 3.86 | 2.18 | 2.13 | 0.47 | 0.26 | 5.06 | 3.10 | 2.89 | 7.15 | 40.08 | |||||||||||||
| 1970 | 13.42 | 3.98 | 2.56 | 3.92 | 1.78 | 0.96 | 0.18 | 0.22 | 2.67 | 3.49 | 5.60 | 9.47 | 48.25 | |||||||||||||
| 1971 | 8.23 | 3.68 | 7.44 | 2.83 | 1.37 | 2.37 | 0.87 | 0.99 | 4.26 | 4.46 | 6.27 | 7.73 | 50.50 | |||||||||||||
| 1972 | 10.56 | 6.42 | 7.58 | 4.57 | 1.23 | 1.61 | 0.62 | 0.77 | 3.24 | 1.54 | 3.95 | 0.00 | z | 42.09 | ||||||||||||
| 1973 | 3.82 | 1.51 | 3.19 | 1.37 | 2.25 | 3.66 | 0.00 | 0.10 | 3.28 | 4.75 | 10.94 | 8.96 | 43.83 | |||||||||||||
| 1974 | 10.71 | 5.74 | 8.14 | 5.35 | 3.29 | 2.07 | 2.07 | 0.27 | 0.69 | 2.85 | 6.24 | 8.73 | 56.15 | |||||||||||||
| 1975 | 11.17 | 5.77 | 5.70 | 2.95 | 2.02 | 3.29 | 0.22 | 3.41 | 0.05 | 7.43 | 6.48 | 10.52 | 59.01 | |||||||||||||
| 1976 | 8.48 | 6.53 | 4.62 | 4.36 | 3.91 | 1.31 | 1.21 | 3.02 | 1.21 | 2.02 | 0.86 | 3.02 | 40.55 | |||||||||||||
| 1977 | 1.71 | 3.93 | 4.91 | 0.93 | 5.09 | 0.60 | 0.72 | 3.93 | 4.87 | 2.97 | 6.38 | 9.81 | 45.85 | |||||||||||||
| 1978 | 5.64 | 3.78 | 2.90 | 4.52 | 3.52 | 1.63 | 1.84 | 1.89 | 4.76 | 0.59 | 4.10 | 2.34 | 37.51 | |||||||||||||
| 1979 | 1.28 | 8.83 | 3.11 | 2.48 | 2.08 | 0.81 | 0.70 | 2.54 | 2.40 | 4.41 | 2.61 | 6.38 | 37.63 | |||||||||||||
| 1980 | 4.51 | 6.15 | 3.88 | 3.88 | 0.60 | 2.99 | 0.56 | 0.77 | 1.73 | 1.85 | 7.57 | 9.81 | 44.30 | |||||||||||||
| 1981 | 2.14 | 5.73 | 3.33 | 3.34 | 2.15 | 4.00 | 0.13 | 0.25 | 1.74 | f | 4.96 | 4.27 | 6.73 | b | 37.03 | |||||||||||
| 1982 | 5.68 | b | 7.20 | 4.09 | 2.49 | 0.08 | f | 0.76 | 0.61 | p | 1.01 | 2.46 | b | 2.47 | j | 2.88 | e | 6.25 | e | 32.82 | ||||||
| 1983 | 6.43 | 4.27 | 7.42 | a | 2.58 | 1.51 | a | 3.42 | 1.70 | 1.42 | 0.98 | 0.67 | 10.43 | 4.33 | d | 45.16 | ||||||||||
| 1984 | 1.69 | 3.34 | 4.21 | d | 1.05 | m | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 9.24 | |||
| 1985 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 6.07 | 4.23 | 1.98 | 12.28 | ||||
| 1986 | 6.99 | 5.37 | g | 3.20 | 2.39 | 3.24 | 0.94 | 1.05 | r | 0.10 | l | 2.77 | k | 3.14 | i | 4.66 | g | 4.11 | d | 20.87 | ||||||
| 1987 | 5.24 | e | 5.09 | g | 6.39 | b | 2.28 | c | 1.44 | p | 0.35 | n | 0.96 | v | 0.46 | b | 0.60 | u | 0.44 | 3.14 | 8.47 | j | 17.95 | |||
| 1988 | 5.10 | j | 2.15 | p | 5.12 | n | 3.04 | j | 3.13 | n | 2.60 | r | 1.29 | z | 0.50 | y | 1.64 | y | 0.96 | t | 10.14 | e | 4.51 | n | 10.14 | |
| 1989 | 3.80 | k | 3.19 | p | 8.10 | d | 1.75 | t | 2.62 | o | 1.21 | w | 0.64 | y | 0.97 | w | 0.22 | z | 2.67 | p | 7.32 | n | 4.28 | w | 8.10 | |
| 1990 | 12.78 | j | 6.81 | n | 2.50 | n | 3.23 | l | 1.68 | t | 2.66 | r | 0.58 | z | 1.45 | w | 0.01 | z | 5.67 | l | 8.10 | 4.55 | e | 12.65 | ||
| 1991 | 4.29 | q | 5.72 | p | 4.94 | i | 7.63 | m | 2.43 | p | 2.04 | n | 0.18 | v | 1.37 | t | 0.00 | z | 2.13 | s | 8.62 | i | 4.44 | m | 0.00 | |
| 1992 | 6.94 | n | 4.37 | p | 1.35 | w | 5.04 | h | 0.48 | w | 1.96 | w | 0.01 | z | 1.38 | z | 2.12 | u | 2.03 | s | 6.21 | i | 6.04 | g | 0.00 | |
| 1993 | 3.14 | r | 0.39 | x | 5.06 | l | 4.90 | i | 4.72 | s | 3.88 | r | 2.83 | t | 0.12 | z | 0.04 | z | 1.79 | 1.64 | t | 5.68 | p | 1.79 | ||
| 1994 | 4.93 | m | 6.21 | k | 3.94 | r | 0.00 | z | 1.15 | x | 1.15 | u | 0.00 | z | 0.32 | z | 0.75 | x | 7.91 | v | 7.42 | p | 7.94 | o | 0.00 | |
| 1995 | 6.56 | u | 3.79 | v | 5.69 | p | 3.94 | s | 2.32 | y | 1.36 | x | 1.58 | z | 1.56 | z | 2.40 | v | 4.78 | t | 12.40 | j | 8.47 | q | 0.00 | |
| 1996 | 7.58 | k | 11.88 | o | 2.15 | v | 7.28 | n | 3.26 | o | 1.41 | w | 1.54 | z | 0.70 | z | 3.99 | t | 5.23 | 7.62 | 15.48 | g | 12.85 | |||
| 1997 | 8.52 | a | 3.65 | p | 8.26 | f | 4.47 | p | 4.23 | r | 2.82 | n | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 8.52 | |
| 1998 | 0.00 | z | 3.75 | i | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 11.70 | i | 9.43 | k | 0.00 | |
| 1999 | 9.40 | h | 16.89 | e | 5.38 | l | 1.45 | q | 3.28 | o | 1.52 | p | 1.17 | c | 0.93 | y | 0.15 | z | 3.34 | s | 9.24 | b | 6.81 | m | 27.30 | |
| 2000 | 6.91 | e | 5.57 | j | 3.60 | k | 2.19 | t | 2.32 | s | 1.80 | v | 0.58 | z | 0.39 | z | 2.25 | 2.62 | t | 1.83 | s | 3.33 | n | 9.16 | ||
| 2001 | 2.92 | a | 2.41 | 2.97 | 3.73 | 2.02 | 2.83 | 1.34 | g | 2.15 | 0.00 | z | 2.59 | 11.43 | 8.37 | b | 41.42 | |||||||||
| 2002 | 8.44 | a | 4.38 | 5.27 | 3.19 | 1.79 | 0.91 | 0.50 | 1.32 | 0.50 | h | 0.88 | 3.33 | a | 7.60 | 37.61 | ||||||||||
| 2003 | 5.68 | a | 4.85 | c | 7.16 | 4.73 | 1.33 | b | 0.44 | 0.00 | 0.39 | a | 1.92 | 5.65 | a | 0.00 | z | 4.02 | v | 32.15 | ||||||
| 2004 | 6.81 | a | 3.11 | 2.33 | 0.48 | c | 3.74 | e | 0.00 | h | 0.00 | 0.00 | z | 3.12 | c | 3.26 | 0.00 | z | 0.00 | z | 22.85 | |||||
| 2005 | 2.85 | a | 1.55 | m | 6.81 | 4.78 | 4.64 | a | 2.72 | k | 0.73 | b | 0.07 | 8.30 | z | 0.00 | z | 0.00 | z | 9.47 | q | 19.88 | ||||
| 2006 | 15.13 | g | 3.76 | u | 3.90 | s | 2.09 | x | 3.69 | w | 1.88 | x | 0.00 | z | 0.00 | z | 1.28 | z | 2.30 | w | 0.00 | z | 0.00 | z | 0.00 | |
| 2007 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 2.82 | v | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 6.93 | 5.04 | 4.80 | 3.16 | 2.29 | 2.00 | 0.74 | 1.43 | 2.31 | 3.73 | 6.33 | 6.91 | 46.28 | |||||||||||||
| S.D. | 3.65 | 2.74 | 1.88 | 1.19 | 1.15 | 1.15 | 0.67 | 1.30 | 1.30 | 2.15 | 2.87 | 2.50 | 7.84 | |||||||||||||
| SKEW | 0.35 | 2.58 | 0.16 | -0.41 | 0.74 | 0.34 | 0.92 | 1.17 | 0.46 | 0.46 | 0.04 | -0.37 | 0.08 | |||||||||||||
| MAX | 14.59 | 16.89 | 8.14 | 5.35 | 5.09 | 4.36 | 2.36 | 5.38 | 5.06 | 8.86 | 11.43 | 10.62 | 60.12 | |||||||||||||
| MIN | 1.28 | 1.51 | 0.80 | 0.48 | 0.60 | 0.29 | 0.00 | 0.07 | 0.05 | 0.44 | 0.86 | 1.98 | 29.57 | |||||||||||||
| NO YRS | 36 | 32 | 36 | 34 | 32 | 30 | 29 | 32 | 29 | 34 | 35 | 31 | 21 | |||||||||||||