| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 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 | 65.77 | 54.90 | 46.16 | 55.61 | ||||
| 1990 | 49.00 | 49.61 | 59.65 | 65.47 | 66.71 | 73.40 | 85.23 | 82.48 | 78.80 | 64.65 | 53.83 | 41.00 | 64.15 | |||||||||||||
| 1991 | 44.97 | 57.57 | 53.61 | 59.20 | 62.61 | 70.47 | 84.26 | 83.68 | 82.77 | 70.55 | 56.33 | 47.94 | 64.50 | |||||||||||||
| 1992 | 51.26 | 58.90 | 63.61 | 66.37 | ----- | z | 79.60 | 83.06 | 87.74 | 79.37 | 68.61 | 54.40 | 45.61 | 67.14 | ||||||||||||
| 1993 | 44.19 | 48.11 | 59.68 | 59.27 | 69.97 | 71.67 | 74.81 | 79.42 | 80.23 | 68.52 | 48.07 | 45.39 | 62.44 | |||||||||||||
| 1994 | 49.81 | 49.68 | 60.68 | 62.57 | 69.52 | 71.90 | 84.81 | 81.71 | 80.13 | 64.48 | 47.90 | 48.97 | 64.35 | |||||||||||||
| 1995 | 48.10 | 57.61 | 56.77 | 60.47 | 70.45 | 73.70 | 82.00 | 81.65 | 79.53 | 64.45 | 56.93 | 50.81 | 65.21 | |||||||||||||
| 1996 | 48.65 | 52.97 | 59.32 | 63.70 | 66.23 | 75.80 | 88.13 | 86.77 | 75.20 | 64.90 | 55.03 | 49.06 | 65.48 | |||||||||||||
| 1997 | 49.84 | 53.32 | 58.90 | 62.13 | 76.29 | 74.83 | 82.06 | 85.26 | 76.97 | 62.29 | 55.83 | 46.61 | 65.36 | |||||||||||||
| 1998 | 51.19 | 54.14 | 57.00 | 62.07 | 63.26 | 74.00 | 83.97 | 85.16 | 81.10 | 65.13 | 54.30 | 45.71 | 64.75 | |||||||||||||
| 1999 | 49.03 | 51.50 | 54.45 | 60.97 | 66.42 | 74.73 | 81.65 | 81.52 | 81.63 | 70.23 | 58.23 | 46.81 | 64.76 | |||||||||||||
| 2000 | 47.42 | 53.21 | 55.55 | 65.33 | 68.23 | 78.27 | 80.13 | 82.97 | 77.23 | 67.45 | 50.07 | 48.55 | 64.53 | |||||||||||||
| 2001 | 49.35 | 50.68 | 57.71 | 60.03 | 73.55 | 72.43 | 80.87 | 82.74 | 78.90 | 66.16 | 56.37 | 47.97 | 64.73 | |||||||||||||
| 2002 | 48.55 | 53.79 | 55.32 | 63.67 | 67.10 | 76.70 | 86.26 | 84.52 | 80.03 | 64.97 | 55.83 | 50.48 | 65.60 | |||||||||||||
| 2003 | 52.71 | 53.39 | 58.58 | 58.33 | 68.97 | 79.47 | 88.13 | 85.32 | 81.53 | 69.71 | 50.77 | ----- | z | 67.90 | ||||||||||||
| 2004 | 49.52 | 51.59 | 63.16 | 66.30 | 69.65 | 75.47 | 85.97 | 84.87 | 74.30 | 65.77 | 53.13 | 48.55 | 65.69 | |||||||||||||
| 2005 | 48.97 | 54.00 | 61.87 | 61.90 | 69.32 | 71.97 | 85.32 | 87.77 | 76.97 | 66.58 | 50.77 | 46.77 | 65.18 | |||||||||||||
| 2006 | 49.77 | 53.71 | 53.77 | 63.40 | 72.16 | 77.23 | 86.90 | 84.39 | 80.17 | 67.13 | 54.43 | 49.19 | 66.02 | |||||||||||||
| 2007 | 45.45 | 51.82 | 61.10 | 63.33 | 71.97 | 77.73 | 84.10 | 82.81 | 76.57 | 62.58 | 50.10 | 47.39 | 64.58 | |||||||||||||
| 2008 | 43.77 | 51.45 | 54.06 | 58.93 | 69.71 | 74.33 | 86.29 | 85.42 | 80.73 | 65.52 | 55.80 | 45.35 | 64.28 | |||||||||||||
| 2009 | 46.10 | 52.25 | 53.58 | 61.93 | 72.81 | 76.67 | 88.74 | 85.68 | 80.70 | 62.90 | 52.97 | 43.61 | 64.83 | |||||||||||||
| 2010 | 54.03 | 55.68 | 57.52 | 59.83 | 65.68 | 73.00 | 85.74 | 84.13 | 76.83 | 66.26 | 54.03 | 50.29 | 65.25 | |||||||||||||
| 2011 | 50.00 | 50.18 | 55.10 | 57.87 | 64.61 | 73.27 | 78.87 | 84.13 | 83.90 | 65.13 | 53.47 | 45.13 | 63.47 | |||||||||||||
| 2012 | 48.84 | 51.83 | 54.03 | 62.83 | 68.90 | 72.23 | 80.94 | 86.13 | 81.80 | 67.90 | 56.23 | 47.48 | 64.93 | |||||||||||||
| 2013 | 44.39 | 51.25 | 58.90 | 64.50 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.00 | z | 51.51 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 48.54 | 52.84 | 57.66 | 62.00 | 68.82 | 74.73 | 83.84 | 84.19 | 79.37 | 66.15 | 53.74 | 47.17 | 64.77 | |||||||||||||
| S.D. | 2.64 | 2.64 | 3.10 | 2.51 | 3.37 | 2.58 | 3.34 | 2.08 | 2.44 | 2.27 | 2.79 | 2.31 | 0.80 | |||||||||||||
| SKEW | -0.16 | 0.61 | 0.28 | 0.13 | 0.12 | 0.36 | -0.78 | -0.25 | -0.31 | 0.30 | -0.67 | -0.62 | -1.33 | |||||||||||||
| MAX | 54.03 | 58.90 | 63.61 | 66.37 | 76.29 | 79.60 | 88.74 | 87.77 | 83.90 | 70.55 | 58.23 | 50.81 | 66.02 | |||||||||||||
| MIN | 43.77 | 48.11 | 53.58 | 57.87 | 62.61 | 70.47 | 74.81 | 79.42 | 74.30 | 62.29 | 47.90 | 41.00 | 62.44 | |||||||||||||
| NO YRS | 24 | 24 | 24 | 23 | 22 | 23 | 23 | 23 | 23 | 24 | 24 | 23 | 21 | |||||||||||||