YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 91.74 | 77.70 | 58.81 | 76.08 | i | |||
1968 | 64.35 | 74.07 | 77.97 | 82.17 | 94.58 | 106.70 | 109.29 | 103.94 | 102.23 | 89.40 | a | 74.93 | 60.61 | 86.69 | ||||||||||||
1969 | 65.03 | 64.18 | 73.52 | 86.83 | 98.74 | 102.63 | 110.84 | 114.64 | c | 104.30 | 84.52 | 75.41 | a | 67.69 | b | 87.36 | ||||||||||
1970 | 64.44 | d | 73.18 | 75.35 | 80.37 | 97.00 | 105.86 | a | 112.00 | 110.14 | b | 100.37 | 86.16 | 76.47 | 62.40 | a | 86.98 | |||||||||
1971 | 64.13 | 71.18 | 78.10 | 84.67 | 89.13 | 104.83 | 113.77 | 107.48 | 100.17 | 85.41 | b | 71.90 | 59.13 | 85.83 | ||||||||||||
1972 | 62.94 | 74.17 | 87.23 | a | 85.34 | a | 96.90 | 107.27 | 115.10 | 108.16 | 100.30 | 80.39 | 67.97 | 59.45 | 87.10 | |||||||||||
1973 | 58.58 | 65.54 | 68.68 | 83.60 | 99.32 | 108.40 | 113.29 | 109.55 | 101.27 | 89.45 | 72.53 | 65.94 | 86.35 | |||||||||||||
1974 | 57.71 | 68.41 | a | 78.48 | 84.73 | 99.03 | 112.97 | 110.71 | 109.26 | 105.07 | b | 88.13 | 72.50 | 59.81 | 87.23 | |||||||||||
1975 | 62.45 | 66.89 | 72.16 | 77.63 | 93.45 | 105.80 | 112.36 | c | 110.00 | 102.90 | 87.00 | 71.97 | 64.94 | 85.63 | ||||||||||||
1976 | 64.76 | b | 69.86 | 73.65 | 82.13 | 97.65 | 104.93 | 111.00 | 106.77 | 95.70 | 83.39 | ----- | z | ----- | z | 88.98 | b | |||||||||
1977 | 60.39 | 72.14 | 71.68 | 88.53 | 86.97 | a | 108.30 | 111.84 | 108.97 | 100.60 | 90.29 | 73.87 | 66.87 | 86.70 | ||||||||||||
1978 | 61.16 | 66.71 | 76.06 | 82.10 | 93.74 | 108.77 | 112.77 | 109.23 | 97.97 | 91.94 | 69.10 | 56.71 | 85.52 | |||||||||||||
1979 | 53.55 | 63.46 | 72.84 | 85.60 | 95.19 | 106.87 | 111.97 | 106.84 | 108.10 | 93.32 | 73.43 | 67.58 | 86.56 | |||||||||||||
1980 | 64.45 | 70.34 | 72.87 | 84.87 | 89.58 | 105.23 | 112.39 | 109.39 | ----- | z | 91.19 | ----- | z | 72.97 | 87.33 | b | ||||||||||
1981 | 69.94 | 71.43 | 74.55 | 90.17 | 94.32 | 110.13 | 112.87 | 111.13 | 102.17 | 84.84 | 77.80 | 68.00 | 88.95 | |||||||||||||
1982 | 63.55 | 69.07 | 73.13 | 83.47 | 93.71 | 103.60 | 108.13 | 108.03 | 98.60 | 84.10 | 69.27 | 61.07 | a | 84.64 | ||||||||||||
1983 | 64.65 | 68.64 | 74.52 | 78.27 | 94.16 | 103.93 | 108.23 | 103.00 | 102.60 | 87.52 | 74.17 | 65.65 | 85.44 | |||||||||||||
1984 | 66.26 | 70.41 | 79.03 | 83.43 | 102.61 | 103.83 | 107.81 | 105.42 | 103.93 | 83.90 | 73.10 | 59.71 | 86.62 | |||||||||||||
1985 | 62.61 | 65.82 | 75.52 | 90.50 | 97.74 | 108.97 | 110.35 | 108.19 | 94.93 | 86.39 | 68.57 | 65.39 | 86.25 | |||||||||||||
1986 | 68.87 | 70.71 | ----- | z | 85.20 | 95.81 | 107.03 | 105.84 | 109.03 | 93.80 | 85.26 | 74.47 | 63.90 | 87.27 | a | |||||||||||
1987 | 61.81 | 69.14 | 74.97 | 89.67 | 93.58 | 105.63 | 107.03 | 107.03 | 102.00 | 91.90 | 70.27 | 57.55 | 85.88 | |||||||||||||
1988 | 60.13 | 70.76 | 77.71 | 82.33 | 93.87 | a | 102.57 | 111.68 | 106.23 | 99.10 | 95.57 | a | 74.10 | 65.32 | 86.61 | |||||||||||
1989 | 61.48 | 67.29 | 82.17 | a | 92.93 | 95.00 | i | 104.73 | 111.06 | 105.71 | 100.67 | 86.90 | 77.37 | 67.29 | 87.05 | a | ||||||||||
1990 | 63.45 | 65.43 | 78.81 | 87.10 | 92.03 | 105.07 | 108.71 | 104.77 | a | 100.87 | 89.29 | 75.00 | b | 59.29 | c | 85.82 | ||||||||||
1991 | 61.58 | 74.50 | 67.71 | 82.40 | 89.97 | 98.40 | 107.74 | 105.58 | 99.83 | 93.10 | a | 73.30 | 62.90 | 84.75 | ||||||||||||
1992 | 61.77 | 68.86 | 72.13 | 87.17 | 94.94 | 101.60 | 106.03 | a | 106.77 | 102.47 | 89.61 | 69.73 | 58.48 | 84.96 | ||||||||||||
1993 | 59.35 | 64.00 | 76.39 | 85.23 | 94.65 | 100.73 | 104.97 | 105.16 | 101.27 | 88.61 | 69.60 | 64.26 | 84.52 | |||||||||||||
1994 | 66.55 | 63.54 | 79.16 | 85.90 | 91.71 | 109.10 | 110.84 | 110.84 | 103.00 | 85.39 | 66.62 | a | 63.32 | 86.33 | ||||||||||||
1995 | 61.27 | a | 75.32 | 73.03 | 81.13 | 87.74 | 99.43 | 110.13 | 111.29 | 106.20 | 92.19 | 81.30 | 67.94 | 87.25 | ||||||||||||
1996 | 68.77 | 73.52 | 80.03 | 89.10 | 99.65 | 109.70 | 113.81 | 112.81 | 100.93 | 89.52 | 75.30 | 65.16 | 89.86 | |||||||||||||
1997 | 65.06 | 70.86 | 84.39 | 85.97 | 103.84 | 105.03 | a | 110.26 | 111.45 | 101.30 | 88.16 | 75.40 | 62.48 | 88.68 | ||||||||||||
1998 | 66.42 | 64.86 | 74.90 | 79.93 | 89.87 | 101.17 | 112.35 | 111.16 | 100.80 | 86.13 | 73.63 | 64.10 | 85.44 | |||||||||||||
1999 | 69.13 | 71.25 | 80.06 | 79.03 | 93.87 | 105.30 | 107.97 | 108.87 | 101.33 | 94.39 | 79.33 | 66.81 | 88.11 | |||||||||||||
2000 | 68.59 | b | 71.10 | 76.71 | 91.43 | 101.73 | a | 109.57 | 113.19 | 110.16 | 103.03 | 87.32 | 68.23 | 68.10 | 89.10 | |||||||||||
2001 | 63.00 | 66.79 | 78.03 | 84.63 | 102.84 | 109.03 | 111.29 | 111.55 | 106.70 | 91.97 | 76.67 | 61.32 | 88.65 | |||||||||||||
2002 | 63.70 | a | 70.68 | 75.74 | 91.28 | a | 96.32 | 110.47 | 114.16 | 111.23 | a | 103.92 | f | 86.71 | 76.00 | 65.14 | b | 87.40 | a | |||||||
2003 | 72.23 | 68.65 | k | 76.39 | h | 82.92 | r | 97.18 | c | 108.04 | b | 114.97 | b | 109.76 | b | 105.88 | e | 96.77 | 69.75 | b | 65.00 | c | 93.29 | c | ||
2004 | 64.38 | e | 65.61 | a | 84.97 | b | 86.28 | e | 98.59 | d | 108.96 | b | 112.68 | c | 108.64 | c | 101.90 | 86.04 | f | 69.57 | b | 63.28 | b | 87.71 | a | |
2005 | 63.68 | c | 67.14 | 76.69 | e | 84.23 | d | 99.56 | d | 103.67 | c | 114.93 | b | 107.91 | h | ----- | z | 93.90 | u | 70.83 | x | 66.00 | q | 87.13 | e | |
2006 | 68.77 | r | 73.69 | l | 71.90 | k | 84.83 | f | 101.44 | m | 110.44 | e | 113.52 | h | 109.80 | f | 101.43 | i | 85.96 | c | 76.86 | h | 63.67 | p | 98.20 | j |
2007 | 62.89 | v | 73.14 | g | 80.65 | k | 87.38 | i | 99.29 | j | 108.52 | c | 114.83 | h | 109.74 | l | 104.85 | j | ----- | z | ----- | z | ----- | z | 108.52 | k |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 63.74 | 69.10 | 76.36 | 85.01 | 95.45 | 106.08 | 110.90 | 108.60 | 101.49 | 88.52 | 73.23 | 63.63 | 86.66 | |||||||||||||
S.D. | 3.63 | 3.34 | 4.21 | 3.77 | 4.19 | 3.29 | 2.66 | 2.59 | 3.07 | 3.66 | 3.50 | 3.65 | 1.39 | |||||||||||||
SKEW | -0.12 | -0.01 | 0.49 | 0.12 | -0.01 | -0.32 | -0.45 | -0.09 | -0.32 | 0.23 | 0.09 | 0.07 | 0.54 | |||||||||||||
MAX | 72.23 | 75.32 | 87.23 | 92.93 | 103.84 | 112.97 | 115.10 | 114.64 | 108.10 | 96.77 | 81.30 | 72.97 | 89.86 | |||||||||||||
MIN | 53.55 | 63.46 | 67.71 | 77.63 | 86.97 | 98.40 | 104.97 | 103.00 | 93.80 | 80.39 | 66.62 | 56.71 | 84.52 | |||||||||||||
YRS | 38 | 37 | 36 | 37 | 37 | 40 | 38 | 37 | 35 | 38 | 36 | 37 | 30 |