YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 57.45 | 57.45 | k | |
1966 | 58.10 | a | 60.61 | 75.94 | 85.67 | 93.67 | a | 99.60 | 104.71 | 105.48 | 96.40 | 83.56 | d | 70.77 | 63.12 | e | 83.13 | |||||||||
1967 | ----- | z | 70.75 | d | 71.03 | 69.15 | c | 87.63 | a | 92.71 | b | 103.08 | g | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 78.26 | g | |
1968 | ----- | z | 69.78 | b | 72.68 | 77.50 | 87.84 | 98.57 | 102.81 | 97.52 | 95.10 | 83.48 | 69.53 | 55.55 | 82.76 | a | ||||||||||
1969 | 59.68 | 57.00 | 66.87 | 79.07 | 92.79 | b | 94.39 | b | 102.35 | 105.58 | 98.62 | a | 79.63 | a | 71.60 | 62.68 | 80.86 | |||||||||
1970 | 59.60 | a | 67.85 | a | 70.58 | 74.93 | a | 90.76 | b | 97.72 | a | 105.00 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 80.92 | e | |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | 73.43 | 88.80 | f | 98.70 | 103.94 | 101.61 | 92.10 | 87.71 | 64.70 | 54.87 | 84.63 | d | ||||||||
1979 | 50.29 | 60.04 | 71.52 | 79.30 | 87.81 | 100.20 | 103.87 | 98.77 | 99.87 | 84.97 | b | 67.90 | 64.65 | 80.76 | ||||||||||||
1980 | 61.45 | 64.79 | 66.48 | 78.19 | n | 80.52 | 95.67 | 103.48 | 100.68 | 94.87 | 85.29 | 73.60 | 70.00 | a | 81.53 | a | ||||||||||
1981 | 64.00 | 68.11 | 69.23 | 82.97 | 87.42 | 101.47 | 104.52 | 102.84 | 93.90 | a | 76.55 | 72.55 | a | 63.45 | 82.25 | |||||||||||
1982 | 60.45 | b | 65.59 | a | 66.97 | a | 77.72 | a | 85.54 | c | 93.40 | 100.50 | a | 100.83 | b | 89.47 | 80.45 | b | 64.27 | 59.84 | 78.75 | |||||
1983 | 62.00 | 63.74 | a | 66.67 | a | 71.71 | b | 89.13 | a | 96.70 | 101.16 | 94.38 | b | 94.72 | a | 82.32 | 67.17 | 60.20 | a | 79.16 | ||||||
1984 | 64.94 | 66.90 | 72.17 | g | 77.79 | a | 94.77 | 95.97 | 100.87 | a | 97.86 | c | 96.33 | 77.17 | b | 64.87 | 53.57 | a | 81.00 | a | ||||||
1985 | 58.58 | 63.56 | a | 67.77 | 82.53 | 89.00 | 102.79 | b | 105.52 | 102.35 | 86.79 | b | 80.43 | a | 59.93 | c | 64.23 | a | 80.29 | |||||||
1986 | 69.06 | 68.41 | a | 76.86 | b | 80.34 | a | 91.52 | b | 101.63 | 99.63 | d | 102.97 | a | 87.33 | 79.17 | a | 68.80 | 59.97 | 82.14 | ||||||
1987 | 57.53 | a | 64.62 | b | 67.66 | b | 85.08 | d | 86.73 | a | 99.14 | b | 97.70 | a | 101.03 | a | 95.55 | a | 87.70 | a | 67.52 | c | 52.97 | 80.27 | ||
1988 | 55.90 | 69.34 | 73.68 | 76.30 | 90.35 | 99.37 | 108.68 | 103.10 | 93.20 | 91.68 | 73.07 | 64.03 | a | 83.22 | ||||||||||||
1989 | 60.81 | 65.71 | 77.42 | 89.40 | 88.97 | 98.57 | 105.77 | 101.32 | 95.83 | a | 85.81 | 78.37 | 70.29 | 84.86 | ||||||||||||
1990 | 63.77 | 63.57 | 76.73 | a | 85.17 | 87.32 | 99.10 | 104.39 | 102.13 | 96.83 | 88.26 | 74.48 | a | 60.16 | 83.49 | |||||||||||
1991 | 63.35 | 76.39 | 64.61 | 78.50 | 83.77 | 94.17 | 103.58 | 101.74 | 98.00 | 91.32 | 73.30 | 63.26 | 82.67 | |||||||||||||
1992 | 62.55 | 66.83 | 68.16 | 84.67 | 92.52 | 95.53 | 99.55 | 103.68 | 97.93 | 88.52 | 68.80 | 56.55 | 82.11 | |||||||||||||
1993 | 56.57 | a | 60.50 | 73.26 | 80.67 | 89.13 | 94.60 | 101.06 | 101.94 | 98.07 | 86.87 | 68.97 | 64.52 | 81.35 | ||||||||||||
1994 | 67.87 | 63.14 | 79.26 | 82.60 | 89.17 | a | 103.17 | 107.35 | 107.27 | a | 97.57 | 83.84 | 64.20 | 62.10 | 83.96 | |||||||||||
1995 | 57.79 | b | 76.61 | 70.00 | 79.38 | a | 85.10 | a | 95.53 | 105.65 | 105.61 | 100.90 | 89.23 | 77.77 | 61.74 | 83.78 | ||||||||||
1996 | 61.74 | 66.69 | 72.87 | a | 82.44 | c | 88.72 | b | 99.68 | b | 105.86 | b | 104.27 | a | 92.63 | c | 81.04 | e | 67.17 | 58.52 | 81.80 | |||||
1997 | 59.59 | b | 64.61 | 77.67 | a | 78.88 | d | 93.35 | 94.00 | c | 101.44 | d | 101.43 | a | 93.55 | a | 81.15 | e | 67.13 | 56.50 | a | 80.78 | ||||
1998 | 59.03 | a | 56.22 | a | 67.90 | b | 72.56 | c | 79.14 | c | 91.19 | c | 104.83 | a | 106.15 | d | 92.64 | b | 78.56 | d | 66.80 | 61.30 | a | 78.03 | ||
1999 | 63.27 | a | 65.80 | c | 71.90 | b | 72.52 | c | 87.15 | d | 96.69 | a | 100.81 | e | 100.75 | c | 95.04 | d | 87.47 | a | 73.30 | 62.68 | 81.45 | |||
2000 | 61.37 | a | 64.04 | c | 71.54 | c | 84.00 | b | 93.81 | e | 100.58 | d | 103.23 | a | 101.90 | b | 95.07 | b | 79.48 | b | 64.13 | 63.42 | 81.88 | |||
2001 | 57.11 | c | 58.69 | b | 73.93 | a | 76.50 | d | 96.27 | a | 99.57 | 102.04 | c | 105.04 | c | 97.59 | a | 85.97 | a | 70.46 | b | 57.00 | 81.68 | |||
2002 | 58.61 | 68.63 | a | 69.68 | c | 81.92 | d | 90.71 | c | 102.69 | d | 107.52 | b | 103.18 | c | 96.18 | b | 81.42 | 70.33 | 58.40 | a | 82.44 | ||||
2003 | 69.20 | a | 62.28 | c | 72.38 | b | 72.84 | e | 90.07 | c | 101.19 | c | 108.72 | b | 102.24 | b | 98.93 | c | 89.83 | b | 61.43 | 56.97 | 82.17 | |||
2004 | 60.23 | a | 57.96 | a | 78.83 | h | 81.34 | a | 90.21 | c | 101.46 | b | 105.23 | a | 101.79 | b | 95.07 | 78.62 | e | 64.48 | a | 58.77 | a | 81.38 | a | |
2005 | 60.14 | b | 61.75 | 70.03 | 75.97 | 90.94 | 97.24 | a | 109.58 | e | 103.23 | 91.86 | a | 82.36 | f | 71.54 | b | 60.06 | 81.12 | a | ||||||
2006 | 60.52 | 67.11 | a | 64.03 | 79.37 | 93.69 | b | 98.52 | g | 105.29 | c | 98.56 | d | 91.93 | 78.33 | a | 72.32 | e | ----- | z | 81.11 | b | ||||
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.43 | x | ----- | z |
2008 | 54.62 | r | 61.50 | k | 68.07 | p | 72.83 | r | 85.87 | 100.83 | 106.42 | 105.61 | 97.10 | 84.06 | 72.07 | a | 55.13 | 88.39 | d | |||||||
2009 | 63.26 | 60.22 | a | 70.10 | 77.90 | a | 94.52 | 93.50 | 106.10 | 101.90 | 98.27 | 77.30 | a | 69.40 | 54.16 | 80.55 | ||||||||||
2010 | 56.94 | 60.93 | 67.94 | 73.60 | 80.90 | 97.80 | 106.55 | 101.45 | 96.27 | 80.68 | 65.30 | 58.26 | 78.88 | |||||||||||||
2011 | 58.65 | 60.32 | 68.77 | 78.38 | a | 82.26 | 95.31 | a | 101.97 | 103.81 | 95.67 | 82.74 | 63.93 | 58.42 | 79.19 | |||||||||||
2012 | 62.26 | 64.62 | 70.07 | a | 79.47 | 91.42 | 99.97 | 103.10 | 104.32 | 96.50 | 81.97 | 70.40 | 57.13 | 81.77 | ||||||||||||
2013 | 56.37 | a | 61.25 | 74.48 | 81.33 | 88.84 | 101.40 | 105.19 | 101.06 | 93.47 | 77.58 | 67.27 | 59.45 | 80.64 | ||||||||||||
2014 | 66.55 | 67.54 | 72.94 | 80.30 | 89.90 | 99.27 | 102.48 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 82.71 | e | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 60.79 | 64.68 | 71.07 | 79.06 | 88.98 | 98.03 | 103.96 | 102.25 | 95.19 | 83.25 | 68.94 | 60.04 | 81.48 | |||||||||||||
S.D. | 3.86 | 4.58 | 3.78 | 4.42 | 3.99 | 3.09 | 2.70 | 2.60 | 3.12 | 4.28 | 4.19 | 4.07 | 1.66 | |||||||||||||
SKEW | 0.12 | 0.52 | 0.29 | -0.08 | -0.57 | -0.29 | -0.07 | -0.63 | -0.81 | 0.27 | 0.11 | 0.49 | -0.16 | |||||||||||||
MAX | 69.20 | 76.61 | 79.26 | 89.40 | 96.27 | 103.17 | 109.58 | 107.27 | 100.90 | 91.68 | 78.37 | 70.29 | 84.86 | |||||||||||||
MIN | 50.29 | 56.22 | 64.03 | 69.15 | 79.14 | 91.19 | 97.70 | 94.38 | 86.79 | 76.55 | 59.93 | 52.97 | 78.03 | |||||||||||||
YRS | 37 | 39 | 37 | 39 | 40 | 40 | 40 | 38 | 38 | 37 | 38 | 38 | 30 |