YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1960 | ----- | z | ----- | z | 82.06 | 88.00 | 94.52 | d | 108.73 | 108.94 | 105.73 | a | 103.57 | 85.55 | 78.00 | 66.61 | 92.17 | b | ||||||||
1961 | 69.06 | 73.50 | 77.68 | 88.00 | 94.81 | 106.97 | 107.26 | 103.23 | 96.73 | 87.39 | 71.63 | 65.03 | 86.77 | |||||||||||||
1962 | 64.29 | 70.14 | 72.55 | 92.20 | 93.61 | 103.07 | 106.97 | 108.97 | 99.53 | 90.16 | 80.63 | 70.07 | a | 87.68 | ||||||||||||
1963 | 63.77 | 76.36 | 77.48 | 83.33 | 98.23 | 100.77 | 108.61 | 101.16 | 101.93 | 91.94 | 75.63 | 69.10 | 87.36 | |||||||||||||
1964 | 63.62 | b | 66.83 | 73.23 | 83.27 | 93.45 | 102.47 | 108.43 | a | 101.48 | 96.23 | 93.81 | 71.13 | 65.19 | 84.93 | |||||||||||
1965 | 66.74 | 69.07 | 72.32 | 82.43 | 91.26 | 98.47 | 107.35 | 105.87 | 95.93 | 93.26 | 76.67 | 63.55 | 85.24 | |||||||||||||
1966 | 61.77 | 64.75 | 79.45 | 88.47 | 97.87 | 104.97 | 107.32 | 105.16 | 98.40 | 87.87 | 77.13 | 67.29 | 86.70 | |||||||||||||
1967 | 67.23 | 73.96 | 80.58 | 80.20 | 92.68 | 100.00 | 105.32 | 104.65 | 99.27 | 90.48 | 78.97 | 60.13 | 86.12 | |||||||||||||
1968 | 65.84 | 72.86 | 74.90 | 83.93 | 94.70 | a | 105.21 | a | 104.32 | 100.10 | a | 100.37 | 90.32 | 73.48 | a | 63.32 | 85.78 | |||||||||
1969 | 69.39 | 67.61 | 74.61 | 88.79 | b | 97.48 | 102.83 | 108.32 | 106.65 | 100.27 | 83.03 | 71.43 | 65.55 | 86.33 | ||||||||||||
1970 | 64.13 | 71.89 | 71.60 | a | 78.50 | 92.23 | 103.37 | 108.58 | 105.55 | 95.57 | 84.65 | 76.37 | 65.16 | 84.80 | ||||||||||||
1971 | 67.55 | 71.33 | d | 80.58 | 84.03 | 90.71 | c | 102.43 | 108.74 | 100.39 | 99.33 | 81.19 | 73.60 | 61.74 | 85.14 | |||||||||||
1972 | 67.23 | 75.72 | 87.58 | 88.10 | 94.19 | 102.93 | 108.97 | 102.94 | 98.30 | 81.39 | 68.33 | 62.39 | 86.51 | |||||||||||||
1973 | 61.58 | 66.64 | 66.35 | 82.30 | 96.94 | 104.87 | 106.87 | 106.13 | 100.73 | 91.26 | 74.53 | 68.74 | 85.58 | |||||||||||||
1974 | 64.84 | 70.96 | a | 78.45 | 86.53 | 96.52 | 109.20 | 104.84 | 104.74 | 99.47 | 87.26 | 74.10 | 62.19 | 86.59 | ||||||||||||
1975 | 66.35 | 69.39 | 73.45 | 77.87 | 92.48 | 103.20 | 105.87 | 106.77 | 99.80 | 88.13 | 76.27 | 65.81 | 85.45 | |||||||||||||
1976 | 68.39 | 72.90 | 75.35 | 83.57 | 95.16 | 104.57 | 104.00 | 105.16 | 94.40 | 84.00 | 76.03 | 67.74 | 85.94 | |||||||||||||
1977 | 63.97 | 75.39 | 73.39 | 87.43 | 89.03 | 106.23 | 107.42 | 105.29 | 98.57 | 90.06 | 77.50 | 69.90 | 87.02 | |||||||||||||
1978 | 63.87 | 66.96 | 76.39 | 83.30 | 94.00 | 107.73 | 108.65 | 104.39 | 98.30 | 91.39 | 71.40 | 60.48 | 85.57 | |||||||||||||
1979 | 56.87 | 67.25 | 72.39 | 85.57 | 91.77 | 104.47 | 108.06 | 103.26 | 104.03 | 91.65 | 73.10 | 69.48 | 85.66 | |||||||||||||
1980 | 66.10 | 71.48 | 72.55 | 84.83 | 90.32 | 106.77 | 109.45 | 104.71 | 101.07 | 89.06 | 76.63 | 74.74 | 87.31 | |||||||||||||
1981 | 69.45 | 73.61 | 74.55 | 89.80 | 93.81 | 107.73 | 107.00 | 105.97 | a | 100.43 | 85.29 | 78.77 | 69.52 | 87.99 | ||||||||||||
1982 | 64.55 | 71.04 | 73.30 | a | 85.86 | b | 93.63 | a | 102.40 | 105.10 | 104.41 | b | 98.03 | a | 86.87 | 70.50 | 62.06 | 84.81 | ||||||||
1983 | 66.55 | 67.29 | 72.10 | 79.17 | 95.23 | a | 102.63 | 107.29 | 103.10 | a | 100.77 | 85.68 | c | 73.33 | 65.16 | 84.86 | ||||||||||
1984 | 66.45 | 71.86 | 80.87 | 83.66 | a | 101.58 | 102.90 | 102.94 | 101.42 | 98.63 | 82.77 | a | 73.30 | 61.45 | 85.65 | |||||||||||
1985 | 62.74 | 67.71 | 75.39 | 90.23 | 97.06 | 107.60 | 107.13 | 106.45 | 94.47 | 86.26 | 72.63 | 66.39 | 86.17 | |||||||||||||
1986 | 73.97 | a | 71.39 | 81.55 | 88.10 | 97.45 | b | 106.31 | a | 104.10 | a | 105.13 | 95.50 | 85.77 | 75.87 | 66.13 | 87.61 | |||||||||
1987 | 66.16 | 69.75 | 75.03 | 91.27 | 94.23 | 106.60 | 106.71 | 103.97 | 98.87 | 92.52 | 73.27 | 62.13 | a | 86.71 | ||||||||||||
1988 | 64.90 | 74.10 | 80.13 | 85.33 | 95.94 | 106.23 | 107.58 | 103.45 | 100.00 | 93.42 | 76.03 | a | 67.10 | 87.85 | ||||||||||||
1989 | 65.40 | a | 73.75 | 84.35 | 94.77 | 97.58 | 106.30 | 109.34 | b | 105.32 | 103.23 | 89.61 | 79.83 | 69.52 | 89.92 | |||||||||||
1990 | 67.48 | 69.54 | 80.58 | 88.87 | 93.97 | 108.40 | 104.93 | a | 101.65 | 99.27 | 90.77 | 76.80 | 62.74 | 87.08 | ||||||||||||
1991 | 64.32 | 76.68 | 70.29 | 84.59 | a | 93.68 | 100.63 | 107.16 | 105.42 | 99.90 | a | 91.97 | 74.17 | 65.23 | 86.17 | |||||||||||
1992 | 64.84 | 70.97 | 74.00 | 89.93 | a | 95.90 | a | 103.80 | 105.30 | a | 102.39 | 102.47 | 91.74 | 72.87 | 61.61 | 86.32 | ||||||||||
1993 | 65.48 | 66.75 | 78.10 | 88.10 | 98.10 | 104.67 | 106.42 | 104.23 | 100.57 | 88.52 | 72.37 | 67.03 | 86.69 | |||||||||||||
1994 | 68.97 | 69.79 | 80.10 | 87.50 | 94.16 | 109.30 | 109.03 | 108.26 | 101.50 | 87.19 | 72.33 | 65.97 | 87.84 | |||||||||||||
1995 | 63.42 | 75.43 | 78.45 | 84.27 | 91.61 | 103.97 | 109.81 | 108.55 | 103.07 | 92.81 | 80.50 | 70.68 | 88.55 | |||||||||||||
1996 | 71.29 | 75.66 | 79.84 | 89.87 | 99.29 | 108.73 | 109.19 | 107.06 | 97.30 | 89.03 | 78.60 | 70.68 | 89.71 | |||||||||||||
1997 | 68.10 | 73.00 | 86.00 | 85.47 | 101.58 | 103.40 | 108.39 | 105.84 | 101.83 | 89.06 | 76.80 | 63.45 | 88.58 | |||||||||||||
1998 | 68.84 | 64.82 | 75.10 | 80.34 | a | 92.10 | 102.50 | 108.94 | 107.65 | 101.50 | 88.77 | 77.48 | a | 67.77 | 86.32 | |||||||||||
1999 | 71.97 | 76.52 | a | 81.13 | a | 81.21 | a | 95.48 | 104.40 | 104.10 | 106.26 | 101.17 | 94.97 | 83.57 | 69.03 | 89.15 | ||||||||||
2000 | 72.71 | 75.72 | 77.84 | 91.80 | 101.58 | 106.07 | 109.26 | 105.16 | 104.17 | 84.65 | 67.10 | 68.90 | 88.75 | |||||||||||||
2001 | 64.52 | 68.36 | 78.71 | 85.67 | 102.06 | 107.41 | a | 106.77 | 106.45 | 105.23 | 91.77 | 79.43 | 63.32 | 88.31 | ||||||||||||
2002 | 67.19 | 74.61 | 78.42 | 90.37 | 96.81 | 109.00 | 108.55 | 107.81 | 101.03 | 86.90 | 78.30 | 64.55 | 88.63 | |||||||||||||
2003 | 74.10 | 69.04 | 77.10 | 84.53 | 97.42 | 106.17 | 110.45 | 105.90 | 103.10 | 95.71 | 72.50 | 67.45 | 88.62 | |||||||||||||
2004 | 68.00 | 67.48 | 85.55 | 86.67 | 98.52 | 105.87 | 107.84 | 105.68 | 100.30 | 86.58 | 70.60 | 65.35 | 87.37 | |||||||||||||
2005 | 66.52 | 67.75 | 74.55 | 87.17 | 97.94 | 105.27 | 111.00 | 105.26 | 102.67 | 90.90 | 79.80 | 70.52 | 88.28 | |||||||||||||
2006 | 71.48 | 76.82 | 74.35 | 86.53 | 100.29 | 109.13 | 108.65 | 104.32 | 97.93 | 88.48 | 80.97 | 66.20 | a | 88.76 | ||||||||||||
2007 | 65.06 | 73.39 | 82.87 | 87.77 | 98.00 | 107.43 | 107.65 | 107.39 | 101.70 | 91.45 | 82.33 | 62.77 | a | 88.98 | ||||||||||||
2008 | 64.65 | 69.72 | 80.84 | 88.57 | 92.81 | 107.73 | 106.81 | 106.42 | 102.24 | a | 92.40 | a | 80.03 | 65.97 | 88.18 | |||||||||||
2009 | 71.45 | 74.14 | 82.41 | b | 87.20 | 100.81 | 102.13 | 110.94 | 108.94 | 102.97 | 88.26 | 81.17 | 64.97 | 89.61 | ||||||||||||
2010 | 68.39 | 70.36 | 76.19 | 86.60 | 94.03 | 106.40 | 108.90 | a | 106.58 | 105.13 | 90.06 | 75.37 | 72.23 | 88.35 | ||||||||||||
2011 | 68.42 | 69.07 | 82.68 | 89.10 | 93.81 | 106.50 | 108.93 | a | 110.94 | 104.53 | 92.57 | a | 75.27 | 63.23 | 88.75 | |||||||||||
2012 | 71.58 | 73.97 | 81.29 | 91.20 | 100.59 | b | 108.73 | 106.61 | 107.74 | 100.80 | 92.84 | 82.50 | 67.61 | 90.46 | ||||||||||||
2013 | 65.13 | 69.18 | 84.00 | 90.00 | 97.73 | a | 110.00 | 108.39 | 107.00 | 103.62 | v | ----- | z | ----- | z | ----- | z | 91.43 | d | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 66.73 | 71.21 | 77.60 | 86.34 | 95.68 | 105.29 | 107.51 | 105.27 | 100.23 | 89.05 | 75.79 | 66.06 | 87.18 | |||||||||||||
S.D. | 3.30 | 3.31 | 4.43 | 3.64 | 3.17 | 2.68 | 1.83 | 2.25 | 2.66 | 3.44 | 3.73 | 3.23 | 1.49 | |||||||||||||
SKEW | 0.07 | -0.01 | 0.04 | -0.29 | 0.22 | -0.30 | -0.49 | -0.22 | -0.25 | -0.37 | -0.01 | 0.28 | 0.18 | |||||||||||||
MAX | 74.10 | 76.82 | 87.58 | 94.77 | 102.06 | 110.00 | 111.00 | 110.94 | 105.23 | 95.71 | 83.57 | 74.74 | 90.46 | |||||||||||||
MIN | 56.87 | 64.75 | 66.35 | 77.87 | 89.03 | 98.47 | 102.94 | 100.10 | 94.40 | 81.19 | 67.10 | 60.13 | 84.80 | |||||||||||||
YRS | 53 | 53 | 54 | 54 | 54 | 54 | 54 | 54 | 53 | 53 | 53 | 53 | 52 |