YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1960 | ----- | z | ----- | z | 63.11 | 68.18 | 74.76 | d | 89.18 | 91.48 | 89.88 | a | 84.41 | a | 68.90 | 58.02 | 48.50 | 73.64 | b | |||||||
1961 | 51.40 | 54.71 | 58.77 | 67.28 | a | 73.44 | 88.53 | 91.74 | 87.95 | 79.28 | 67.19 | 53.83 | 48.98 | 68.59 | ||||||||||||
1962 | 47.55 | 53.57 | 54.60 | a | 71.75 | 74.06 | 83.32 | 90.76 | 92.07 | a | 84.17 | 71.32 | 61.43 | 53.07 | a | 69.81 | ||||||||||
1963 | 46.95 | 58.52 | 59.10 | 64.62 | 78.50 | 80.93 | 92.68 | 87.37 | 84.67 | 73.81 | 59.52 | 49.08 | 69.64 | |||||||||||||
1964 | 44.91 | b | 46.97 | 54.83 | a | 65.07 | 74.32 | a | 82.87 | 92.38 | a | 85.65 | 80.38 | 74.35 | 53.50 | 49.87 | 67.09 | |||||||||
1965 | 51.89 | 52.46 | 55.82 | 64.57 | 71.69 | 77.57 | 91.48 | 89.73 | 78.95 | 71.26 | 60.27 | 51.10 | 68.07 | |||||||||||||
1966 | 46.45 | 49.61 | 60.15 | 68.22 | 77.83 | b | 85.55 | 91.69 | 90.15 | 82.95 | 69.21 | 59.13 | 49.26 | 69.18 | ||||||||||||
1967 | 47.58 | 54.16 | 62.18 | 62.58 | 74.10 | 82.52 | 91.19 | 89.71 | 83.15 | 70.56 | 60.47 | 46.27 | 68.71 | |||||||||||||
1968 | 49.44 | 57.72 | 58.13 | 64.83 | 74.48 | a | 83.74 | a | 87.27 | a | 84.13 | a | 79.77 | 69.88 | a | 56.97 | a | 45.94 | 67.69 | |||||||
1969 | 53.79 | 51.79 | 56.37 | 68.42 | e | 77.26 | 83.52 | 92.56 | 89.40 | 81.33 | 65.85 | 57.73 | 50.82 | 69.07 | ||||||||||||
1970 | 46.98 | 54.98 | a | 56.62 | b | 59.80 | 74.97 | 86.15 | 92.92 | 91.06 | 79.79 | b | 66.48 | 58.57 | 49.45 | 68.15 | ||||||||||
1971 | 48.71 | 54.21 | d | 61.42 | a | 65.88 | 74.18 | c | 84.78 | 94.79 | 87.40 | 82.02 | 66.15 | 55.82 | 46.65 | 68.50 | ||||||||||
1972 | 47.58 | 56.55 | a | 67.74 | 69.42 | 76.19 | 86.68 | 94.44 | 88.32 | 82.32 | 69.16 | 53.43 | 47.81 | 69.97 | ||||||||||||
1973 | 47.32 | 53.36 | 53.12 | c | 64.13 | 75.27 | 82.33 | 89.29 | 88.79 | 80.25 | 68.87 | 55.97 | 49.40 | 67.34 | ||||||||||||
1974 | 49.18 | 50.87 | a | 61.27 | 66.97 | 76.42 | 89.83 | 90.98 | a | 87.56 | 83.45 | 72.19 | 56.68 | 46.13 | 69.30 | |||||||||||
1975 | 48.16 | 51.23 | 57.34 | 60.10 | 72.13 | 82.92 | 91.21 | 89.15 | 83.52 | 68.34 | 56.13 | 50.48 | 67.56 | |||||||||||||
1976 | 49.81 | 56.62 | 57.31 | 64.65 | 76.73 | 85.00 | 89.98 | 88.13 | 79.53 | 68.13 | 58.02 | 49.69 | 68.63 | |||||||||||||
1977 | 50.15 | 54.66 | 55.74 | 68.13 | 70.85 | 86.20 | 93.06 | 91.94 | 83.55 | 73.90 | 59.08 | 53.89 | 70.10 | |||||||||||||
1978 | 51.45 | 54.30 | 62.27 | 65.30 | 74.29 | 87.45 | 91.50 | 88.18 | 82.02 | 74.13 | 58.10 | 47.79 | 69.73 | |||||||||||||
1979 | 46.98 | a | 52.07 | 56.65 | 65.92 | 74.74 | 85.07 | 89.98 | 85.87 | 86.37 | 71.85 | 54.38 | 51.63 | 68.46 | ||||||||||||
1980 | 53.10 | 57.31 | 58.03 | 65.88 | 72.31 | 85.73 | 93.66 | 89.74 | 83.47 | 70.19 | 57.70 | 55.16 | 70.19 | |||||||||||||
1981 | 54.53 | 55.70 | 59.13 | 71.00 | 76.11 | 89.47 | 92.55 | 90.73 | a | 84.33 | 67.92 | 59.33 | 52.13 | 71.08 | ||||||||||||
1982 | 49.79 | 55.84 | 57.42 | a | 67.25 | b | 75.05 | a | 83.20 | 90.02 | 91.22 | d | 82.57 | a | 67.16 | 57.17 | 49.48 | 68.85 | ||||||||
1983 | 50.56 | 53.73 | 58.50 | 61.78 | 75.43 | a | 82.78 | 91.27 | 88.57 | a | 87.07 | 71.95 | c | 58.25 | 52.06 | 69.33 | ||||||||||
1984 | 50.76 | 52.60 | 60.95 | 65.43 | a | 81.35 | 84.33 | 89.60 | 87.79 | 84.08 | 66.85 | a | 56.67 | 49.84 | 69.19 | |||||||||||
1985 | 49.76 | 52.12 | 58.94 | 70.38 | 78.23 | 87.60 | 91.82 | 90.74 | 77.87 | 70.81 | 57.07 | 50.11 | 69.62 | |||||||||||||
1986 | 54.93 | a | 56.16 | 64.50 | 69.42 | 77.93 | b | 88.40 | a | 89.25 | a | 91.71 | 78.73 | 68.47 | 58.95 | 50.89 | 70.78 | |||||||||
1987 | 49.15 | 54.62 | 58.66 | 71.73 | 77.21 | 88.35 | 88.47 | 88.71 | 82.02 | 75.31 | 57.48 | 47.52 | a | 69.94 | ||||||||||||
1988 | 49.81 | 56.71 | a | 60.50 | 67.57 | 76.03 | 87.45 | 92.18 | 89.58 | 81.17 | 76.66 | 58.66 | a | 50.08 | 70.53 | |||||||||||
1989 | 49.95 | a | 56.59 | 65.08 | 74.88 | 78.65 | 86.70 | 92.67 | b | 89.06 | 83.63 | 70.98 | 59.18 | 49.50 | 71.41 | |||||||||||
1990 | 50.06 | 52.11 | 62.03 | 70.05 | 75.90 | 89.38 | 90.63 | a | 86.60 | a | 83.63 | 70.98 | 59.28 | 47.13 | 69.82 | |||||||||||
1991 | 49.48 | 57.82 | 54.16 | 64.45 | a | 72.84 | 80.98 | 90.05 | 89.87 | 83.29 | a | 73.55 | 57.70 | 52.97 | 68.93 | |||||||||||
1992 | 50.73 | 57.14 | 59.50 | 70.81 | a | 79.32 | a | 85.35 | 89.78 | a | 88.71 | 83.78 | a | 72.30 | a | 54.65 | 49.47 | 70.13 | ||||||||
1993 | 54.90 | 54.39 | 61.02 | 68.82 | 80.02 | 85.48 | 89.39 | 89.06 | 82.62 | 71.48 | a | 56.43 | 49.95 | 70.30 | ||||||||||||
1994 | 49.81 | 53.39 | 62.52 | 68.73 | 76.16 | b | 90.23 | 92.94 | 93.98 | 84.85 | 69.60 | 56.18 | 52.45 | 70.90 | ||||||||||||
1995 | 51.58 | 59.25 | 61.84 | 65.52 | 74.34 | 83.65 | 92.60 | 93.56 | 87.30 | 71.63 | 62.93 | 52.55 | 71.40 | |||||||||||||
1996 | 51.65 | 59.93 | 61.76 | 71.00 | 79.95 | 89.23 | 94.55 | a | 91.90 | 81.62 | 71.19 | 60.48 | 52.06 | 72.11 | ||||||||||||
1997 | 52.87 | 54.88 | 65.68 | 68.03 | 83.65 | 84.72 | 91.02 | 91.74 | 87.33 | 70.45 | 59.15 | 49.27 | 71.57 | |||||||||||||
1998 | 52.60 | 52.09 | 59.52 | 62.81 | a | 74.23 | 83.53 | 93.32 | 93.61 | 85.93 | 71.05 | 58.52 | a | 50.81 | 69.83 | |||||||||||
1999 | 52.87 | 57.78 | a | 62.28 | a | 64.43 | a | 76.34 | 87.28 | 90.58 | 90.84 | 85.32 | 74.56 | 62.17 | 50.08 | a | 71.21 | |||||||||
2000 | 54.26 | 57.93 | 61.79 | 72.37 | 82.16 | 88.87 | 93.60 | 91.53 | 87.32 | 70.43 | a | 51.92 | 50.77 | 71.91 | ||||||||||||
2001 | 50.34 | 52.93 | 61.37 | 68.75 | 82.32 | 88.62 | a | 92.81 | 91.45 | 87.33 | 73.81 | 63.65 | 48.00 | 71.78 | ||||||||||||
2002 | 50.52 | 55.07 | 59.23 | 71.52 | 77.24 | 88.92 | 93.66 | 91.47 | 85.37 | 69.50 | 60.67 | 49.85 | 71.08 | |||||||||||||
2003 | 56.50 | 55.32 | 60.58 | 66.78 | 78.98 | 86.72 | 95.15 | 92.60 | 86.48 | 77.56 | 57.28 | 51.26 | 72.10 | |||||||||||||
2004 | 53.31 | 52.24 | 68.29 | 70.13 | 79.34 | 86.20 | 91.82 | 89.69 | 83.52 | 70.13 | 57.18 | 51.13 | 71.08 | |||||||||||||
2005 | 54.06 | 56.52 | 59.52 | 67.63 | 79.08 | 86.50 | 93.97 | 90.29 | 85.27 | 73.39 | 60.58 | 50.95 | 71.48 | |||||||||||||
2006 | 51.73 | 56.02 | 59.15 | 68.40 | 80.27 | 90.87 | 95.27 | 90.16 | 82.43 | 70.95 | 61.20 | 49.13 | a | 71.30 | ||||||||||||
2007 | 48.66 | 56.05 | 64.61 | 69.37 | 79.24 | 88.62 | 93.18 | 93.32 | 86.10 | 73.16 | 63.93 | 48.58 | a | 72.07 | ||||||||||||
2008 | 50.60 | 53.64 | 61.60 | 69.57 | 74.34 | 89.17 | 92.71 | 92.52 | 86.03 | a | 73.17 | a | 61.95 | 51.89 | 71.43 | |||||||||||
2009 | 54.53 | 56.54 | 63.72 | b | 68.13 | 83.06 | 85.37 | 95.77 | 92.31 | 86.08 | 69.89 | 61.80 | 49.06 | 72.19 | ||||||||||||
2010 | 53.23 | 55.68 | 59.37 | 67.52 | 74.81 | 86.82 | 94.68 | a | 92.26 | 86.78 | 73.42 | 57.00 | 54.74 | 71.36 | ||||||||||||
2011 | 50.47 | 51.07 | 63.42 | a | 71.20 | 75.66 | 86.25 | 93.02 | a | 95.94 | 86.70 | 73.35 | a | 58.80 | 48.52 | 71.20 | ||||||||||
2012 | 53.40 | 55.14 | 60.87 | 71.43 | 79.97 | b | 90.10 | 92.24 | 93.23 | 85.75 | 73.73 | 62.57 | 51.95 | 72.53 | ||||||||||||
2013 | 48.65 | 52.46 | 64.24 | 70.95 | 79.58 | a | 90.17 | 94.18 | 91.29 | 85.38 | v | ----- | z | ----- | z | ----- | z | 73.94 | d | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 50.67 | 54.63 | 60.23 | 67.58 | 76.73 | 86.13 | 92.03 | 90.15 | 83.54 | 71.08 | 58.37 | 50.10 | 70.08 | |||||||||||||
S.D. | 2.57 | 2.55 | 3.29 | 3.18 | 2.98 | 2.84 | 1.86 | 2.30 | 2.55 | 2.67 | 2.65 | 2.07 | 1.42 | |||||||||||||
SKEW | 0.10 | -0.38 | 0.14 | -0.32 | 0.36 | -0.51 | -0.18 | -0.12 | -0.33 | 0.09 | -0.06 | 0.18 | -0.23 | |||||||||||||
MAX | 56.50 | 59.93 | 68.29 | 74.88 | 83.65 | 90.87 | 95.77 | 95.94 | 87.33 | 77.56 | 63.93 | 55.16 | 72.53 | |||||||||||||
MIN | 44.91 | 46.97 | 53.13 | 59.80 | 70.85 | 77.57 | 87.27 | 84.13 | 77.87 | 65.85 | 51.92 | 45.94 | 67.09 | |||||||||||||
YRS | 53 | 53 | 54 | 54 | 54 | 54 | 54 | 54 | 53 | 53 | 53 | 53 | 52 |