| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1948 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 0.33 | 0.89 | 0.56 | 0.54 | 0.45 | 0.89 | ||||||
| 1949 | 0.16 | 0.47 | 0.36 | 0.27 | 0.32 | 0.54 | 0.28 | 0.40 | 1.04 | 0.60 | 0.31 | 0.24 | 1.04 | |||||||||||||
| 1950 | 0.60 | 0.30 | 0.26 | 0.34 | 0.54 | 0.84 | a | 0.55 | 0.23 | 0.46 | 0.66 | 0.38 | 0.42 | 0.84 | ||||||||||||
| 1951 | 0.41 | 0.36 | 0.64 | 0.21 | 0.59 | 0.37 | 0.89 | 1.12 | 0.17 | 0.83 | 0.12 | 0.40 | 1.12 | |||||||||||||
| 1952 | 0.53 | 0.44 | 0.18 | 0.24 | 0.60 | 0.76 | 1.32 | 0.46 | 0.22 | 0.00 | 0.11 | 0.48 | 1.32 | |||||||||||||
| 1953 | 0.25 | 0.20 | 0.40 | 0.40 | 0.51 | 0.43 | 0.14 | 0.30 | 0.57 | o | 0.27 | 0.20 | 0.19 | 0.57 | ||||||||||||
| 1954 | 0.50 | 0.44 | 0.60 | 0.48 | 0.34 | 0.80 | 0.35 | 0.20 | 0.24 | 0.38 | 0.25 | 0.45 | 0.80 | |||||||||||||
| 1955 | 0.23 | 0.23 | 0.30 | 0.22 | 0.60 | 0.38 | 0.70 | 0.22 | 0.39 | 0.97 | 0.72 | 1.42 | 1.42 | |||||||||||||
| 1956 | 0.91 | 0.18 | 0.34 | 0.48 | 0.23 | 0.49 | 0.34 | 0.35 | 0.19 | 0.31 | 0.27 | 0.38 | 0.91 | |||||||||||||
| 1957 | 0.36 | 0.26 | 0.46 | 0.25 | 0.31 | 0.00 | d | 0.15 | 0.62 | A | 0.29 | 0.17 | 0.25 | 0.43 | A | 0.46 | ||||||||||
| 1958 | 0.28 | 0.34 | 0.31 | 0.61 | 0.67 | 0.66 | 0.40 | 0.33 | 9999.00 | z | 0.24 | 0.80 | 0.28 | 0.80 | ||||||||||||
| 1959 | 0.29 | 0.30 | 0.28 | 0.45 | 0.62 | 0.76 | d | 0.36 | 0.46 | 0.60 | 0.63 | 0.24 | 0.24 | 0.76 | ||||||||||||
| 1960 | 0.27 | 0.35 | 0.27 | 0.67 | 0.73 | 0.58 | 0.16 | 0.91 | 0.08 | 0.58 | 0.33 | 0.30 | 0.91 | |||||||||||||
| 1961 | 0.14 | 0.93 | 0.24 | 0.46 | 0.76 | 0.17 | 0.27 | 1.40 | 0.93 | 0.40 | 0.55 | A | 0.37 | 1.40 | ||||||||||||
| 1962 | 0.64 | 1.20 | 0.35 | 0.47 | 0.61 | 0.57 | A | 0.84 | 0.97 | 0.65 | 0.18 | 0.40 | 0.36 | 1.20 | ||||||||||||
| 1963 | 0.25 | 0.58 | 0.33 | 0.75 | 0.82 | 0.60 | 0.50 | 0.47 | 0.50 | 0.22 | 0.25 | 0.21 | 0.82 | |||||||||||||
| 1964 | 0.40 | 0.13 | 0.27 | 0.54 | 0.58 | 1.00 | 0.50 | 0.22 | 0.13 | 1.24 | 0.62 | A | 0.78 | 1.24 | ||||||||||||
| 1965 | 0.99 | 0.23 | 0.18 | 0.89 | 0.62 | 0.54 | 0.17 | 9999.00 | z | 0.89 | b | 0.45 | 0.28 | 0.42 | 0.99 | |||||||||||
| 1966 | 0.27 | 0.20 | 0.37 | 0.51 | 0.86 | 0.50 | 0.13 | 0.51 | 1.57 | 0.33 | 0.52 | 0.51 | 1.57 | |||||||||||||
| 1967 | 0.78 | 0.59 | 0.84 | A | 0.28 | 0.50 | c | 0.54 | 0.56 | 0.32 | 0.32 | 0.77 | 0.35 | 0.25 | 0.78 | |||||||||||
| 1968 | 0.36 | 0.27 | 0.25 | 0.22 | 0.27 | 0.44 | j | 0.31 | 1.15 | 9999.00 | z | 9999.00 | z | 0.39 | 0.30 | A | 1.15 | |||||||||
| 1969 | 1.35 | 0.13 | 0.33 | 0.40 | 0.20 | 1.29 | 0.50 | 0.31 | 0.55 | 0.38 | 0.15 | a | 0.45 | 1.35 | ||||||||||||
| 1970 | 0.34 | 0.16 | 0.49 | 0.34 | 0.40 | 0.12 | j | 0.53 | 0.30 | 9999.00 | z | 9999.00 | z | 0.51 | 0.83 | 0.83 | ||||||||||
| 1971 | 0.46 | 0.38 | 0.64 | 0.36 | 0.53 | 9999.00 | z | 0.25 | 0.42 | 1.20 | 9999.00 | z | 0.31 | 0.67 | 1.20 | |||||||||||
| 1972 | 0.35 | 0.25 | 0.33 | 0.29 | 0.33 | 0.53 | 0.41 | 0.85 | 0.72 | 0.44 | 0.39 | 0.38 | 0.85 | |||||||||||||
| 1973 | 0.26 | 0.17 | 0.23 | 0.32 | A | 0.24 | 0.42 | 0.19 | 0.44 | 0.37 | 0.45 | 0.53 | 0.32 | 0.53 | ||||||||||||
| 1974 | 0.21 | 0.26 | 0.60 | 0.22 | 0.86 | 0.58 | 0.26 | 0.28 | 0.16 | 0.54 | 0.28 | 0.28 | 0.86 | |||||||||||||
| 1975 | 0.42 | 0.22 | 0.38 | 0.38 | 0.32 | 0.80 | 0.70 | 0.44 | 0.36 | 1.45 | 0.28 | 0.47 | 1.45 | |||||||||||||
| 1976 | 0.74 | 0.24 | 0.32 | 0.60 | 9999.00 | z | 0.49 | 0.14 | 0.34 | 0.42 | 0.10 | 0.12 | 0.22 | 0.74 | ||||||||||||
| 1977 | 0.22 | 0.19 | 0.32 | 9999.00 | z | 0.30 | o | 9999.00 | z | 0.25 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 0.32 | |||||
| 1978 | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 0.80 | 0.48 | 0.16 | 0.66 | 0.32 | 0.80 | ||||||
| 1979 | 0.28 | 0.35 | 0.43 | 0.16 | 0.25 | 0.65 | 0.51 | 0.58 | 0.12 | 0.37 | 0.36 | 0.23 | 0.65 | |||||||||||||
| 1980 | 0.56 | 0.26 | 0.40 | 0.27 | 0.55 | 0.40 | 1.08 | A | 0.63 | 0.67 | 0.08 | 0.52 | 0.58 | 0.67 | ||||||||||||
| 1981 | 0.14 | 0.38 | 0.20 | 0.53 | 0.83 | 1.10 | 0.26 | 0.48 | 0.86 | 0.30 | 0.41 | 0.48 | 1.10 | |||||||||||||
| 1982 | 0.24 | 0.29 | 0.33 | 0.43 | 0.44 | 0.64 | 0.42 | 0.72 | 0.96 | 0.38 | 0.37 | 0.32 | 0.96 | |||||||||||||
| 1983 | 0.22 | 0.32 | b | 0.28 | f | 0.19 | c | 0.23 | c | 0.29 | a | 0.68 | A | 0.50 | A | 0.98 | 0.84 | 0.32 | a | 0.37 | 0.98 | |||||
| 1984 | 9999.00 | z | 0.32 | b | 0.09 | a | 0.23 | 1.50 | A | 0.20 | 0.50 | 0.86 | 0.60 | 0.44 | 0.29 | 0.28 | 0.86 | |||||||||
| 1985 | 0.18 | a | 0.38 | 0.55 | 0.39 | a | 0.51 | 0.50 | 0.71 | 0.98 | 0.56 | 0.37 | a | 0.70 | 0.35 | b | 0.98 | |||||||||
| 1986 | 0.60 | 0.80 | 0.75 | i | 0.47 | 0.50 | 9999.00 | z | 0.76 | a | 1.15 | b | 1.15 | 0.06 | a | 0.92 | 0.03 | 1.15 | ||||||||
| 1987 | 0.35 | 0.30 | 0.28 | 0.14 | 0.72 | b | 0.50 | 0.78 | 0.51 | 0.06 | 0.10 | 0.30 | 0.26 | A | 0.78 | |||||||||||
| 1988 | 0.35 | 0.17 | 0.27 | 0.85 | 0.57 | a | 1.50 | A | 0.20 | 0.22 | 0.24 | 0.50 | 0.75 | 0.15 | 0.85 | |||||||||||
| 1989 | 0.36 | a | 0.41 | 0.45 | 0.27 | 0.30 | 0.39 | 0.27 | c | 0.67 | 0.46 | 0.44 | 0.48 | 0.32 | 0.67 | |||||||||||
| 1990 | 0.27 | 0.15 | 0.24 | 0.51 | A | 0.25 | 0.75 | 0.69 | 0.60 | 0.68 | 0.65 | 0.34 | 0.24 | 0.75 | ||||||||||||
| 1991 | 0.15 | 0.28 | 0.64 | 0.64 | A | 0.69 | 0.40 | a | 0.31 | b | 0.52 | 0.47 | 0.96 | 0.48 | c | 0.25 | b | 0.96 | ||||||||
| 1992 | 0.08 | 0.24 | 0.52 | 0.65 | 0.62 | 1.08 | A | 0.58 | b | 0.09 | 0.37 | 0.47 | 0.25 | 0.38 | a | 0.65 | ||||||||||
| 1993 | 0.58 | a | 0.52 | 0.15 | 0.60 | A | 0.53 | 0.75 | 0.44 | a | 0.40 | 0.15 | A | 0.20 | 0.16 | b | 0.32 | 0.75 | ||||||||
| 1994 | 0.38 | 0.43 | 0.22 | 0.36 | 0.60 | A | 0.95 | 0.50 | 0.60 | 0.15 | 0.60 | 0.39 | d | 0.40 | 0.95 | |||||||||||
| 1995 | 0.48 | 0.38 | 0.61 | 0.78 | 0.40 | 0.40 | 0.50 | e | 0.57 | A | 0.20 | 0.69 | a | 0.93 | 0.73 | a | 0.93 | |||||||||
| 1996 | 0.65 | 0.27 | a | 0.59 | 0.36 | A | 0.88 | a | 0.44 | a | 0.42 | 0.45 | 0.30 | 0.26 | b | 0.88 | b | 9999.00 | z | 0.88 | ||||||
| 1997 | 1.11 | l | 0.35 | 0.40 | b | 0.28 | 0.56 | e | 0.60 | 0.63 | 0.50 | a | 0.45 | d | 0.56 | f | 0.18 | l | 0.20 | A | 1.11 | |||||
| 1998 | 0.32 | d | 0.25 | c | 0.55 | A | 0.30 | a | 0.52 | A | 1.05 | A | 0.49 | a | 0.39 | A | 0.47 | A | 0.24 | A | 0.58 | e | 0.25 | f | 0.58 | |
| 1999 | 0.35 | b | 0.57 | a | 0.27 | 0.37 | 0.69 | c | 0.96 | g | 0.37 | a | 0.95 | c | 1.00 | b | 0.40 | 0.44 | c | 0.30 | b | 1.00 | ||||
| 2000 | 0.88 | b | 0.55 | 0.46 | 0.43 | 1.05 | A | 0.41 | e | 0.00 | 0.27 | b | 0.26 | a | 0.87 | b | 0.18 | 0.33 | a | 0.88 | ||||||
| 2001 | 0.17 | 0.22 | 0.35 | 1.00 | 0.58 | 9999.00 | z | 0.70 | e | 0.19 | a | 0.50 | a | 0.41 | d | 0.81 | c | 0.38 | b | 1.00 | ||||||
| 2002 | 0.52 | b | 0.23 | a | 0.90 | 0.72 | 0.46 | b | 0.92 | A | 0.45 | 0.59 | 1.18 | b | 0.22 | b | 0.57 | h | 0.21 | b | 1.18 | |||||
| 2003 | 0.27 | d | 0.34 | 0.49 | 0.47 | b | 0.63 | 0.65 | b | 0.35 | 0.23 | 0.34 | b | 0.60 | b | 0.35 | e | 0.45 | A | 0.65 | ||||||
| 2004 | 0.46 | b | 0.19 | 0.63 | 0.45 | k | 0.59 | A | 1.08 | A | 0.39 | d | 0.69 | 0.53 | A | 0.48 | A | 0.22 | i | 0.27 | j | 0.69 | ||||
| 2005 | 0.62 | 9999.00 | z | 0.54 | A | 0.42 | 0.56 | d | 0.62 | 0.40 | 1.26 | A | 0.47 | 0.52 | b | 0.54 | b | 0.53 | a | 0.62 | ||||||
| 2006 | 9999.00 | z | 0.16 | c | 0.25 | a | 0.85 | 0.40 | b | 0.23 | b | 0.28 | j | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 9999.00 | z | 0.85 | ||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 0.42 | 0.34 | 0.39 | 0.44 | 0.54 | 0.61 | 0.46 | 0.55 | 0.53 | 0.47 | 0.42 | 0.39 | 0.96 | |||||||||||||
| S.D. | 0.24 | 0.20 | 0.17 | 0.20 | 0.22 | 0.29 | 0.25 | 0.30 | 0.34 | 0.29 | 0.21 | 0.21 | 0.29 | |||||||||||||
| SKEW | 1.51 | 2.25 | 0.87 | 0.82 | 1.33 | 0.84 | 0.97 | 0.97 | 0.89 | 1.09 | 0.81 | 2.53 | 0.51 | |||||||||||||
| MAX | 1.35 | 1.20 | 0.90 | 1.00 | 1.50 | 1.50 | 1.32 | 1.40 | 1.57 | 1.45 | 0.93 | 1.42 | 1.57 | |||||||||||||
| MIN | 0.08 | 0.13 | 0.09 | 0.14 | 0.20 | 0.00 | 0.00 | 0.09 | 0.06 | 0.00 | 0.11 | 0.03 | 0.46 | |||||||||||||
| NO YRS | 54 | 56 | 54 | 55 | 54 | 48 | 56 | 56 | 53 | 53 | 53 | 52 | 29 | |||||||||||||