| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1948 | 44.90 | 48.03 | 54.77 | 78.67 | 80.97 | 89.87 | 94.58 | 92.00 | 88.14 | a | 74.33 | a | 58.40 | 56.06 | 71.73 | |||||||||||
| 1949 | 40.35 | 52.89 | 64.90 | 68.79 | a | 79.81 | 86.37 | 90.35 | 90.45 | 83.80 | 73.61 | 71.28 | a | 52.70 | a | 71.28 | ||||||||||
| 1950 | 59.81 | 63.44 | a | 67.03 | a | 74.59 | a | 82.86 | b | 91.80 | 87.60 | a | 91.03 | b | 80.55 | a | 83.13 | 65.73 | 57.84 | 75.45 | ||||||
| 1951 | 49.48 | 59.64 | 61.68 | 71.30 | 80.71 | 88.80 | 96.81 | 94.19 | 87.77 | 75.16 | 58.67 | 54.10 | 73.19 | |||||||||||||
| 1952 | 56.35 | 58.41 | 60.71 | 71.07 | 81.94 | 95.50 | 92.90 | 95.06 | 84.60 | 75.55 | 53.47 | 51.13 | 73.06 | |||||||||||||
| 1953 | 61.16 | 54.93 | 68.32 | 72.50 | 79.74 | 98.17 | 94.84 | 91.29 | 89.37 | 75.60 | a | 63.23 | 50.00 | 74.93 | ||||||||||||
| 1954 | 56.61 | 65.48 | a | 62.58 | 78.77 | 78.03 | 93.50 | 96.71 | 92.52 | 88.14 | a | 74.23 | ----- | z | ----- | z | 78.66 | |||||||||
| 1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1962 | ----- | z | ----- | z | 61.03 | 74.60 | 88.29 | 89.03 | 91.39 | 95.26 | 83.63 | 77.58 | 62.67 | 54.74 | 77.82 | |||||||||||
| 1963 | 47.06 | 55.61 | 66.06 | 77.60 | 83.94 | 89.67 | 95.90 | 89.97 | 85.70 | 80.13 | 65.93 | 50.00 | 73.96 | |||||||||||||
| 1964 | 53.10 | 44.10 | 62.48 | 73.37 | 83.97 | 93.37 | 97.13 | 93.32 | 82.13 | 77.45 | 60.30 | 53.42 | 72.85 | |||||||||||||
| 1965 | 58.19 | 54.14 | 55.77 | 75.20 | 80.10 | 88.23 | 93.87 | 90.10 | 81.77 | 75.45 | 68.07 | 56.16 | 73.09 | |||||||||||||
| 1966 | 45.23 | 51.36 | 68.03 | 72.90 | 83.26 | 87.87 | 97.26 | 85.97 | 84.00 | 73.26 | 66.70 | 51.58 | 72.28 | |||||||||||||
| 1967 | 58.16 | 57.75 | 71.45 | 76.23 | 81.00 | 88.07 | 89.77 | 86.42 | 81.63 | 76.29 | 61.63 | 44.87 | 72.77 | |||||||||||||
| 1968 | 52.45 | 53.97 | 61.23 | 69.40 | 77.65 | 92.70 | 90.58 | 90.03 | 84.77 | 77.00 | 57.10 | 53.97 | 71.74 | |||||||||||||
| 1969 | 60.16 | 54.93 | 53.68 | 73.87 | 80.32 | 86.20 | 95.03 | 93.10 | 83.03 | 66.03 | 61.63 | 54.81 | 71.90 | |||||||||||||
| 1970 | 50.39 | 60.14 | 56.19 | 70.67 | 83.55 | 89.23 | 92.65 | 91.74 | 80.77 | 66.35 | 62.63 | 59.03 | 71.95 | |||||||||||||
| 1971 | 54.10 | 53.96 | 66.42 | 71.27 | 80.84 | 92.33 | 90.23 | 86.06 | 80.27 | 70.10 | 61.37 | 51.32 | 71.52 | |||||||||||||
| 1972 | 56.42 | 62.45 | 71.19 | 78.47 | 81.32 | 92.27 | 88.94 | 85.68 | 79.63 | 68.74 | 50.73 | 51.19 | 72.25 | |||||||||||||
| 1973 | 46.19 | 53.04 | 58.77 | 65.43 | 77.87 | 90.40 | 90.00 | 93.39 | 81.00 | 76.42 | 67.73 | 53.48 | 71.14 | |||||||||||||
| 1974 | 51.94 | 59.14 | 71.03 | 74.17 | 88.32 | 93.50 | 92.74 | 87.48 | 75.23 | 70.90 | 58.87 | 49.39 | 72.73 | |||||||||||||
| 1975 | 50.26 | 49.39 | 61.03 | 69.33 | 80.19 | 90.50 | 87.26 | 91.35 | 78.67 | 76.84 | 62.17 | 57.16 | 71.18 | |||||||||||||
| 1976 | 54.45 | 64.45 | 63.48 | 73.20 | 77.77 | 90.60 | 89.81 | 91.13 | 82.00 | 66.23 | 57.27 | 54.87 | 72.10 | |||||||||||||
| 1977 | 46.45 | 58.75 | 62.87 | 72.20 | 82.97 | 95.27 | 95.16 | 91.87 | 89.13 | 76.13 | 64.83 | 58.35 | 74.50 | |||||||||||||
| 1978 | 45.42 | 47.57 | 64.61 | 77.83 | 80.03 | 89.63 | 96.45 | 90.26 | 82.77 | 75.00 | 56.43 | 45.13 | 70.93 | |||||||||||||
| 1979 | 39.26 | 57.18 | 63.03 | 71.10 | 77.97 | 87.97 | 92.94 | 88.94 | 85.67 | 77.03 | 54.60 | 55.03 | 70.89 | |||||||||||||
| 1980 | 52.19 | 55.38 | 62.81 | 70.00 | 77.77 | 96.83 | 99.06 | 90.84 | 82.00 | 71.74 | 58.43 | 60.32 | 73.12 | |||||||||||||
| 1981 | 55.10 | 60.71 | 61.29 | 77.97 | 79.55 | 93.20 | 93.74 | 87.03 | 81.33 | 69.71 | 65.70 | 57.61 | 73.58 | |||||||||||||
| 1982 | 54.55 | 53.39 | 65.39 | 71.30 | 80.03 | 87.00 | 92.35 | ----- | z | 83.57 | ----- | z | ----- | z | ----- | z | 73.45 | |||||||||
| 1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 2011 | 54.94 | 55.46 | b | 70.81 | 79.68 | k | 84.29 | 98.97 | 100.75 | c | 99.57 | a | 84.86 | a | 75.61 | 63.10 | 42.68 | 75.55 | ||||||||
| 2012 | 58.55 | 54.38 | c | 71.96 | d | 81.14 | a | 86.77 | 98.73 | 98.71 | 96.97 | 88.13 | 76.57 | a | 70.20 | 58.19 | 78.36 | |||||||||
| 2013 | 52.65 | 57.29 | 69.26 | 54.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.00 | z | 59.73 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 52.20 | 55.91 | 63.87 | 73.55 | 81.39 | 91.52 | 93.52 | 91.14 | 83.47 | 74.21 | 61.75 | 53.40 | 72.79 | |||||||||||||
| S.D. | 5.77 | 5.00 | 5.02 | 3.67 | 2.95 | 3.63 | 3.49 | 3.32 | 3.33 | 4.07 | 5.02 | 4.37 | 1.66 | |||||||||||||
| SKEW | -0.51 | -0.19 | -0.16 | 0.13 | 0.83 | 0.54 | 0.10 | 0.31 | -0.05 | -0.44 | -0.13 | -0.72 | 1.57 | |||||||||||||
| MAX | 61.16 | 65.48 | 71.96 | 81.14 | 88.32 | 98.97 | 100.75 | 99.57 | 89.37 | 83.13 | 71.28 | 60.32 | 78.36 | |||||||||||||
| MIN | 39.26 | 44.10 | 53.68 | 65.43 | 77.65 | 86.20 | 87.26 | 85.68 | 75.23 | 66.03 | 50.73 | 42.68 | 70.89 | |||||||||||||
| NO YRS | 30 | 30 | 31 | 29 | 30 | 30 | 30 | 29 | 30 | 29 | 28 | 28 | 26 | |||||||||||||