| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 98.74 | 96.35 | 90.67 | 77.32 | 65.46 | f | 49.68 | 82.55 | ||||||
| 1949 | 37.74 | 52.07 | 59.90 | 78.37 | 79.45 | 93.17 | 98.03 | 94.65 | 91.57 | 76.48 | 73.70 | 54.03 | 74.10 | |||||||||||||
| 1950 | 49.13 | 63.36 | 67.19 | 78.03 | 82.48 | 91.30 | 98.35 | 97.00 | 85.03 | 80.97 | 68.37 | 61.71 | 76.91 | |||||||||||||
| 1951 | 54.87 | 59.68 | 66.81 | 74.53 | 82.19 | 92.53 | 99.68 | 95.52 | 92.57 | 76.29 | 61.67 | 47.58 | 75.33 | |||||||||||||
| 1952 | 43.32 | 56.45 | 53.42 | 70.70 | 83.68 | 86.47 | 95.58 | 96.65 | 88.53 | 83.35 | 59.33 | 51.10 | 72.38 | |||||||||||||
| 1953 | 61.55 | 60.39 | 66.48 | 71.97 | 72.19 | 88.60 | 100.90 | 95.10 | 92.40 | 75.26 | 64.83 | 58.23 | 75.66 | |||||||||||||
| 1954 | 55.39 | 65.68 | 60.58 | 78.87 | 87.94 | 89.63 | 98.74 | 93.35 | 88.67 | 79.35 | 67.90 | 54.26 | 76.70 | |||||||||||||
| 1955 | 44.87 | 53.96 | 65.45 | 68.33 | 76.81 | 91.37 | 96.52 | 97.87 | 90.07 | 81.19 | 65.53 | 54.52 | 73.87 | |||||||||||||
| 1956 | 54.16 | 55.52 | 68.23 | 68.93 | 79.00 | 92.47 | 95.97 | 94.10 | 90.93 | 73.10 | 68.53 | 61.68 | 75.22 | |||||||||||||
| 1957 | 46.58 | 61.39 | 65.97 | 71.43 | 76.29 | 93.67 | 96.65 | 94.94 | 88.83 | 70.68 | 60.27 | 58.26 | 73.75 | |||||||||||||
| 1958 | 56.35 | 59.61 | 56.19 | 68.70 | 84.16 | 88.50 | 95.65 | 97.19 | 89.40 | 81.23 | 67.07 | 64.84 | 75.74 | |||||||||||||
| 1959 | 56.39 | 53.00 | 69.48 | 78.80 | 78.03 | 94.87 | 101.13 | 95.00 | 85.23 | 80.55 | 71.50 | 58.58 | 76.88 | |||||||||||||
| 1960 | 48.58 | 56.00 | 71.81 | 75.43 | 82.94 | 96.77 | 98.39 | 97.58 | 91.37 | 76.10 | 59.20 | 57.26 | 75.95 | |||||||||||||
| 1961 | 60.13 | 61.61 | 65.26 | 75.20 | 79.61 | 95.63 | 99.35 | 92.71 | 85.27 | 75.26 | 60.00 | 53.39 | 75.28 | |||||||||||||
| 1962 | 54.48 | 53.57 | 58.03 | 78.63 | 75.29 | 89.33 | 95.23 | 96.03 | 89.60 | 79.10 | 66.30 | 60.45 | 74.67 | |||||||||||||
| 1963 | 55.97 | 64.29 | 60.71 | 65.03 | 81.32 | 82.83 | 97.06 | 93.84 | 88.77 | 77.90 | 63.73 | 60.29 | 74.31 | |||||||||||||
| 1964 | 52.29 | 59.76 | 61.87 | 70.27 | 77.68 | 88.60 | 98.26 | 95.39 | 87.53 | 82.29 | 57.80 | 54.94 | 73.89 | |||||||||||||
| 1965 | 56.42 | 61.07 | 63.32 | 68.47 | 76.55 | 84.97 | 94.58 | 93.77 | 82.73 | 82.97 | 60.80 | 51.19 | 73.07 | |||||||||||||
| 1966 | 49.26 | 54.57 | 68.74 | 76.83 | 85.55 | 91.13 | 96.55 | 98.10 | 88.37 | 79.16 | 63.50 | 53.45 | 75.43 | |||||||||||||
| 1967 | 55.03 | 60.96 | 63.52 | 58.40 | 79.68 | 86.50 | 97.90 | 97.55 | 86.03 | 81.03 | 66.03 | 49.71 | 73.53 | |||||||||||||
| 1968 | 56.03 | 63.79 | 66.29 | 71.07 | 82.06 | 93.37 | 96.81 | 89.97 | 88.63 | 77.81 | 63.90 | 49.97 | 74.97 | |||||||||||||
| 1969 | 52.74 | 43.82 | 55.39 | 71.17 | 85.26 | 86.37 | 95.90 | 98.10 | 90.63 | 71.52 | 66.03 | 56.84 | 72.81 | |||||||||||||
| 1970 | 52.97 | 61.07 | 64.29 | 66.50 | 83.71 | 89.87 | 97.77 | 98.52 | 87.30 | 75.10 | 63.13 | 49.13 | 74.11 | |||||||||||||
| 1971 | 58.52 | 60.32 | 66.39 | 70.63 | 73.26 | 90.40 | 98.65 | 98.00 | 86.87 | 72.06 | 61.70 | 48.06 | 73.74 | |||||||||||||
| 1972 | 54.26 | 64.21 | 74.94 | 72.60 | 83.00 | 91.80 | 100.52 | 94.71 | 84.63 | 68.71 | 57.57 | 50.16 | 74.76 | |||||||||||||
| 1973 | 44.16 | 52.68 | 55.94 | 68.50 | 83.90 | 92.33 | 98.26 | 93.97 | 87.93 | 76.42 | 59.37 | 54.97 | 72.37 | |||||||||||||
| 1974 | 42.48 | 58.75 | 63.87 | 69.43 | 84.03 | 95.13 | 96.45 | 94.87 | 92.63 | 72.90 | 62.53 | 51.29 | 73.70 | |||||||||||||
| 1975 | 57.06 | 57.11 | 58.90 | 61.40 | 80.26 | 89.70 | 97.35 | 94.39 | 88.93 | 72.74 | 61.47 | 60.23 | 73.30 | |||||||||||||
| 1976 | 59.87 | 55.76 | 63.23 | 67.77 | 83.23 | 88.90 | 95.03 | 89.77 | 82.77 | 76.90 | 69.87 | 58.90 | 74.33 | |||||||||||||
| 1977 | 52.74 | 64.11 | 59.32 | 75.43 | 71.06 | 91.63 | 98.03 | 95.61 | 86.23 | 79.42 | 67.43 | 55.61 | 74.72 | |||||||||||||
| 1978 | 49.81 | 55.75 | 64.42 | 66.47 | 79.52 | 90.00 | 97.29 | 95.65 | 82.20 | 80.26 | 58.73 | 51.16 | 72.60 | |||||||||||||
| 1979 | 46.84 | 54.61 | 63.94 | 72.80 | 82.29 | 91.50 | 97.39 | 92.06 | 92.23 | 77.16 | 62.23 | 56.16 | 74.10 | |||||||||||||
| 1980 | 54.48 | 57.31 | 58.61 | 71.50 | 74.55 | 88.30 | 97.90 | 95.23 | 87.50 | 77.58 | 66.27 | 61.42 | 74.22 | |||||||||||||
| 1981 | 56.10 | 60.89 | 60.68 | 75.37 | 80.23 | 95.87 | 99.84 | 99.00 | 90.23 | 71.23 | 62.67 | 58.29 | 75.87 | |||||||||||||
| 1982 | 46.00 | 59.32 | 59.13 | 69.40 | 80.19 | 85.87 | 95.00 | 93.61 | 81.37 | 71.74 | 56.80 | 51.19 | 70.80 | |||||||||||||
| 1983 | 54.52 | 56.96 | 60.06 | 63.40 | 80.61 | 89.77 | 93.84 | 89.29 | 87.77 | 75.71 | 59.87 | 54.42 | 72.18 | |||||||||||||
| 1984 | 60.13 | 61.55 | 68.39 | 70.50 | 88.87 | 90.10 | 96.58 | 93.77 | 88.80 | 70.00 | 58.33 | 45.48 | 74.38 | |||||||||||||
| 1985 | 53.90 | 59.50 | 62.00 | 78.73 | 82.65 | 95.53 | 98.32 | 96.06 | 81.67 | 75.13 | 58.43 | 56.19 | 74.84 | |||||||||||||
| 1986 | 60.23 | 59.86 | 67.55 | 70.77 | 83.32 | 94.53 | 94.10 | 97.19 | 80.10 | 73.55 | 64.47 | 56.32 | 75.17 | |||||||||||||
| 1987 | 52.48 | 57.11 | 62.13 | 77.87 | 80.35 | 92.30 | 93.71 | 97.16 | 89.73 | 78.84 | 59.47 | 45.10 | 73.85 | |||||||||||||
| 1988 | 51.58 | 63.38 | 67.39 | 72.23 | 80.52 | 90.47 | 100.68 | 95.68 | 86.43 | 82.52 | 63.00 | 49.90 | 75.31 | |||||||||||||
| 1989 | 51.19 | 54.82 | 69.23 | 80.10 | 80.00 | 90.13 | 99.68 | 92.68 | 86.07 | 74.42 | 67.33 | 60.35 | 75.50 | |||||||||||||
| 1990 | 54.29 | 55.04 | 68.32 | 75.30 | 79.35 | 92.47 | 98.23 | 93.74 | 86.43 | 78.68 | 64.57 | 50.29 | 74.73 | |||||||||||||
| 1991 | 55.39 | 64.75 | 54.74 | 68.93 | 74.94 | 88.83 | 97.55 | 95.16 | 89.37 | 79.06 | 63.07 | 53.77 | 73.80 | |||||||||||||
| 1992 | 52.35 | 57.31 | 62.45 | 78.53 | 85.90 | 88.03 | 94.16 | 96.29 | 89.90 | 78.55 | 59.90 | 48.16 | 74.30 | |||||||||||||
| 1993 | 43.42 | 50.14 | 66.68 | 73.43 | 82.19 | 88.27 | 96.35 | 95.10 | 88.90 | 76.52 | 61.80 | 54.90 | 73.14 | |||||||||||||
| 1994 | 58.84 | 52.71 | 68.42 | 72.30 | 80.52 | 96.17 | 100.48 | 98.52 | 86.03 | 72.35 | 53.73 | 53.65 | 74.48 | |||||||||||||
| 1995 | 47.39 | 66.93 | 61.10 | 69.73 | 73.84 | 85.27 | 96.29 | 96.45 | 90.37 | 78.87 | 70.50 | 54.90 | 74.30 | |||||||||||||
| 1996 | 56.06 | 57.69 | 65.77 | 74.71 | b | 81.87 | 93.37 | 99.71 | 98.00 | 86.80 | 73.13 | 60.37 | 54.00 | 75.12 | ||||||||||||
| 1997 | 53.29 | 58.07 | 71.00 | 71.37 | 86.42 | 88.93 | 94.35 | 96.16 | 87.03 | 75.00 | 61.83 | 49.39 | 74.40 | |||||||||||||
| 1998 | 56.74 | 48.96 | 63.00 | 65.53 | 71.84 | 83.83 | 97.52 | 98.45 | 85.07 | 71.74 | 61.40 | 55.65 | 71.64 | |||||||||||||
| 1999 | 56.94 | 57.75 | 64.81 | 64.70 | 81.32 | 91.10 | 95.71 | 93.10 | 88.23 | 81.58 | 67.00 | 58.23 | 75.04 | |||||||||||||
| 2000 | 56.55 | 56.72 | 64.65 | 76.53 | 85.77 | 94.73 | 97.84 | 95.16 | 88.33 | 72.90 | 58.87 | 59.81 | 75.66 | |||||||||||||
| 2001 | 51.97 | 48.93 | 66.94 | 69.37 | 88.65 | 94.63 | 94.87 | 99.55 | 90.97 | 81.06 | 61.73 | 49.26 | 74.83 | |||||||||||||
| 2002 | 52.97 | 63.39 | 64.10 | 74.63 | 82.58 | 94.93 | 101.03 | 96.77 | 88.10 | 74.97 | 62.53 | 49.03 | 75.42 | |||||||||||||
| 2003 | 61.03 | 55.71 | 67.00 | 66.43 | 82.94 | 94.70 | 100.81 | 95.94 | 91.97 | 82.81 | 55.77 | 50.65 | 75.48 | |||||||||||||
| 2004 | 53.32 | 52.41 | 73.94 | 73.60 | 83.65 | 93.43 | 98.74 | 94.87 | 86.60 | 70.90 | 57.80 | 57.39 | 74.72 | |||||||||||||
| 2005 | 51.87 | 55.71 | 64.48 | 69.67 | 81.94 | 88.50 | 102.13 | 94.84 | 84.20 | 75.48 | 67.53 | 55.00 | 74.28 | |||||||||||||
| 2006 | 47.94 | 61.39 | 57.06 | 69.93 | 83.87 | 94.50 | 99.87 | 95.29 | 87.07 | 73.68 | 66.00 | 56.42 | 74.42 | |||||||||||||
| 2007 | 54.29 | 59.71 | 72.06 | 74.93 | 84.77 | 94.93 | 100.94 | 97.26 | 85.30 | 75.29 | 67.17 | 50.58 | 76.44 | |||||||||||||
| 2008 | 48.03 | 58.24 | 66.45 | 73.10 | 78.61 | 92.67 | 99.55 | 98.94 | 89.20 | 76.97 | 67.37 | 49.65 | 74.90 | |||||||||||||
| 2009 | 59.26 | 55.39 | 65.32 | 72.10 | 87.74 | 85.77 | 100.45 | 94.68 | 91.57 | 72.35 | 64.43 | 48.35 | 74.79 | |||||||||||||
| 2010 | 50.55 | 55.50 | 62.68 | 67.53 | 75.58 | 92.70 | 100.13 | 96.00 | 91.90 | 73.39 | 60.40 | 53.23 | 73.30 | |||||||||||||
| 2011 | 58.58 | 56.11 | 64.65 | 71.03 | 76.87 | 88.70 | 96.74 | 97.94 | 90.23 | 77.71 | 57.67 | 55.06 | 74.27 | |||||||||||||
| 2012 | 57.32 | 58.72 | 66.52 | 74.33 | 84.55 | 93.07 | 96.19 | 97.48 | 90.47 | 77.16 | 64.13 | 52.78 | d | 76.06 | ||||||||||||
| 2013 | 55.10 | a | 59.79 | 71.77 | 71.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 47.00 | z | 62.22 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 53.14 | 57.89 | 64.29 | 71.69 | 80.93 | 90.96 | 97.72 | 95.59 | 87.97 | 76.48 | 63.00 | 54.10 | 74.47 | |||||||||||||
| S.D. | 5.02 | 4.41 | 4.66 | 4.54 | 4.15 | 3.30 | 2.11 | 2.17 | 2.94 | 3.65 | 4.10 | 4.39 | 1.22 | |||||||||||||
| SKEW | -0.74 | -0.44 | -0.16 | -0.33 | -0.42 | -0.34 | -0.01 | -0.66 | -0.57 | 0.01 | 0.24 | 0.15 | -0.53 | |||||||||||||
| MAX | 61.55 | 66.93 | 74.94 | 80.10 | 88.87 | 96.77 | 102.13 | 99.55 | 92.63 | 83.35 | 73.70 | 64.84 | 76.91 | |||||||||||||
| MIN | 37.74 | 43.82 | 53.42 | 58.40 | 71.06 | 82.83 | 93.71 | 89.29 | 80.10 | 68.71 | 53.73 | 45.10 | 70.80 | |||||||||||||
| NO YRS | 65 | 65 | 65 | 64 | 64 | 64 | 65 | 65 | 65 | 65 | 64 | 65 | 64 | |||||||||||||