YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | 108.43 | x | 103.07 | 108.52 | 102.58 | 101.83 | 91.97 | 75.00 | 65.84 | 92.69 | e | |||||||
1952 | 65.61 | 70.28 | 69.74 | 84.20 | 99.35 | 104.20 | 106.94 | 104.63 | a | 100.47 | 94.52 | 71.50 | 64.87 | 86.36 | ||||||||||||
1953 | 70.74 | 71.93 | a | 78.71 | 83.50 | b | 88.06 | 102.07 | 100.65 | 101.42 | 101.10 | 89.06 | 79.07 | a | 66.61 | 86.08 | ||||||||||
1954 | 69.45 | 78.71 | 74.35 | 89.83 | 93.35 | 99.10 | 102.03 | 97.06 | 99.07 | 92.52 | 82.63 | 70.94 | 87.42 | |||||||||||||
1955 | 61.65 | 66.04 | 78.13 | 82.77 | 91.10 | 100.27 | 100.13 | 96.32 | 98.50 | 94.19 | 78.31 | a | 71.71 | 84.93 | ||||||||||||
1956 | 72.81 | 64.41 | 81.61 | 83.93 | 95.26 | 103.03 | 101.71 | 100.68 | 102.13 | 89.45 | 76.70 | 70.48 | 86.85 | |||||||||||||
1957 | 67.84 | 76.75 | 77.77 | 83.77 | 89.52 | 103.03 | 103.48 | 99.84 | 100.33 | 83.65 | 70.73 | 69.61 | 85.53 | |||||||||||||
1958 | 69.35 | 72.07 | 69.65 | 83.47 | 99.26 | 104.50 | 106.76 | b | 103.00 | 100.13 | 90.65 | 77.60 | 75.74 | 87.68 | ||||||||||||
1959 | 71.26 | 66.46 | 80.11 | c | 90.00 | 92.68 | 106.80 | 106.29 | 98.45 | 99.53 | 90.90 | a | 76.07 | 66.68 | 87.10 | |||||||||||
1960 | 60.19 | 66.07 | 80.97 | 87.93 | 95.26 | 108.00 | 108.32 | 105.26 | 103.60 | 88.19 | 78.90 | 67.77 | 87.54 | |||||||||||||
1961 | 69.94 | 74.50 | 78.03 | 87.43 | 95.90 | 105.93 | 106.68 | 100.90 | 96.60 | 89.74 | 72.10 | 65.52 | 86.94 | |||||||||||||
1962 | 64.00 | 72.46 | 73.32 | 88.90 | 89.46 | e | 101.93 | 105.42 | 108.45 | 100.30 | 91.19 | 81.70 | 69.83 | a | 87.25 | |||||||||||
1963 | 64.03 | 77.32 | 77.61 | 84.60 | 98.81 | 100.90 | 107.87 | a | 99.57 | a | 101.48 | a | 93.26 | 76.63 | 69.45 | 87.63 | ||||||||||
1964 | 65.23 | 67.17 | 73.39 | 83.77 | 95.03 | 101.77 | 105.52 | 98.19 | 95.33 | 92.83 | a | 72.67 | 68.48 | 84.95 | ||||||||||||
1965 | 68.30 | a | 69.18 | 73.58 | 83.13 | 91.58 | 97.87 | 105.10 | 104.71 | 97.27 | 93.77 | 80.17 | 64.35 | 85.75 | ||||||||||||
1966 | 63.03 | 63.50 | 78.58 | 87.80 | 96.06 | 102.77 | 105.58 | 101.97 | 95.40 | 89.23 | 79.43 | 68.74 | 86.01 | |||||||||||||
1967 | 68.55 | 74.79 | 80.65 | 80.50 | 92.61 | 98.47 | 104.52 | 102.19 | ----- | z | ----- | z | ----- | z | ----- | z | 87.78 | d | ||||||||
1968 | 67.68 | l | 73.14 | 73.84 | 80.14 | a | ----- | z | 99.61 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 75.70 | i | ||
1969 | ----- | z | ----- | z | ----- | z | ----- | z | 84.57 | c | ----- | z | ----- | z | ----- | z | 100.45 | s | 83.97 | 73.73 | 68.29 | 77.64 | h | |||
1970 | 66.68 | 74.46 | 71.87 | 78.93 | 96.29 | c | ----- | z | ----- | z | ----- | z | 94.61 | b | 83.68 | 79.80 | 65.00 | 79.04 | c | |||||||
1971 | 68.81 | 71.63 | a | 80.71 | 82.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.79 | b | 73.39 | g | |||
1972 | 68.39 | 76.72 | 86.61 | 86.97 | 92.58 | 101.00 | 104.58 | 99.90 | 96.83 | 81.55 | 69.50 | 62.26 | 85.57 | |||||||||||||
1973 | 63.39 | 67.61 | 65.90 | 80.20 | 93.45 | 100.43 | 102.74 | 102.45 | 99.17 | 90.77 | 75.47 | 69.48 | 84.26 | |||||||||||||
1974 | 66.03 | 71.36 | 77.39 | 88.53 | 96.48 | 107.93 | 104.00 | ----- | z | 99.90 | 93.19 | 79.20 | 65.61 | 86.33 | a | |||||||||||
1975 | 69.35 | ----- | z | ----- | z | ----- | z | 93.16 | f | 101.97 | 104.81 | 104.48 | 100.60 | 88.58 | 71.62 | i | 64.55 | 90.62 | e | |||||||
1976 | 66.81 | 68.97 | 70.58 | e | 83.50 | 94.94 | 102.30 | 102.87 | 101.55 | k | 95.08 | f | 89.97 | 81.17 | 68.03 | 82.91 | b | |||||||||
1977 | 67.71 | 74.61 | 74.55 | 81.69 | a | 87.26 | 104.83 | 105.32 | 104.32 | ----- | z | ----- | z | 80.77 | 72.61 | 85.37 | b | |||||||||
1978 | 67.71 | 69.07 | 73.68 | 80.78 | l | 93.42 | 104.87 | 105.52 | 103.97 | 98.93 | a | 92.13 | 71.80 | 61.94 | 85.73 | a | ||||||||||
1979 | 58.71 | 69.00 | 72.61 | 84.80 | ----- | z | 103.73 | 107.32 | 102.23 | 103.23 | 92.61 | 75.20 | 71.13 | 85.51 | a | |||||||||||
1980 | 67.23 | 72.03 | 73.65 | 85.63 | 90.61 | 105.93 | 107.58 | 103.42 | 100.13 | 89.45 | 78.93 | 75.48 | 87.51 | |||||||||||||
1981 | 70.74 | 74.71 | 75.97 | 89.00 | 92.10 | 104.90 | 103.48 | 103.16 | 98.30 | 86.74 | 80.37 | 71.58 | 87.59 | |||||||||||||
1982 | 67.03 | 71.54 | 74.19 | 85.00 | 91.35 | 99.50 | 103.06 | 101.61 | 97.07 | 86.87 | 72.59 | a | 63.90 | a | 84.48 | |||||||||||
1983 | 68.47 | a | 68.57 | 72.45 | 78.10 | 93.32 | 100.32 | b | 104.58 | 100.90 | a | 98.70 | 85.13 | a | 74.63 | 67.39 | 84.38 | |||||||||
1984 | 67.23 | 72.15 | b | 80.87 | 83.50 | 99.35 | 100.17 | a | 100.26 | 99.26 | 97.70 | 82.90 | 74.30 | 61.81 | 84.96 | |||||||||||
1985 | 63.52 | 69.75 | 77.35 | 89.93 | 96.55 | 106.23 | 107.48 | 104.94 | 95.53 | 85.68 | 73.00 | b | 65.70 | a | 86.31 | |||||||||||
1986 | 73.58 | 72.26 | a | 79.37 | d | 85.90 | a | 94.39 | 102.48 | a | 101.19 | 102.52 | 95.53 | 86.55 | 76.10 | 65.67 | a | 86.29 | ||||||||
1987 | 68.13 | 71.15 | b | 74.93 | a | 88.80 | 91.96 | d | 104.57 | 104.23 | 101.62 | b | 96.63 | 91.52 | 74.83 | 64.40 | a | 86.06 | ||||||||
1988 | 66.66 | b | 75.31 | 78.87 | 84.37 | 93.58 | 103.93 | 105.19 | 101.65 | 95.73 | 92.35 | 76.03 | 69.00 | 86.89 | ||||||||||||
1989 | 66.29 | 75.67 | a | 84.45 | 92.90 | 95.65 | 102.60 | 106.06 | 102.26 | 101.10 | 89.40 | a | 79.23 | 69.81 | 88.78 | |||||||||||
1990 | 67.57 | a | 69.81 | b | 79.60 | a | 87.59 | a | 93.94 | 107.07 | 102.13 | h | 97.16 | 94.83 | a | 87.84 | 78.72 | a | 65.17 | a | 84.48 | a | ||||
1991 | 65.30 | d | 75.81 | a | 71.54 | c | 81.59 | a | ----- | z | 101.38 | v | 104.29 | 102.32 | 100.17 | a | 91.81 | 74.83 | a | 67.55 | 83.52 | b | ||||
1992 | 67.58 | 71.28 | 73.53 | a | 88.70 | 93.19 | 101.70 | 103.48 | 100.87 | a | 100.40 | 91.71 | 74.10 | 63.77 | 85.86 | |||||||||||
1993 | 66.71 | 66.96 | b | 78.39 | 86.83 | a | 96.62 | b | 103.07 | a | 103.06 | 101.58 | 96.87 | 87.77 | 74.00 | 68.77 | 85.89 | |||||||||
1994 | 70.77 | 70.86 | 79.61 | 87.77 | 93.71 | 107.79 | a | 108.19 | 106.93 | a | 101.36 | b | 86.71 | 71.82 | b | 67.66 | b | 87.77 | ||||||||
1995 | 65.42 | 76.46 | ----- | z | 85.07 | a | 91.50 | a | 103.53 | 107.71 | 106.53 | a | 101.07 | 93.32 | 80.97 | 72.90 | 89.50 | a | ||||||||
1996 | 72.13 | 75.96 | a | 80.27 | a | 89.83 | a | 99.81 | 107.63 | 105.87 | a | 104.26 | 95.38 | a | 89.40 | a | 80.73 | 71.67 | a | 89.41 | ||||||
1997 | 70.79 | q | 72.00 | 85.84 | 85.00 | 100.39 | 103.93 | 106.87 | ----- | z | 101.23 | 89.55 | 79.77 | 65.35 | 88.99 | b | ||||||||||
1998 | 68.97 | 65.62 | b | 73.81 | 80.63 | 93.16 | 103.47 | 108.10 | 105.65 | 99.83 | 92.52 | 77.97 | 69.00 | b | 86.56 | |||||||||||
1999 | 72.87 | 77.78 | a | 82.17 | b | 87.93 | c | 93.96 | e | 103.00 | 103.26 | ----- | z | 99.20 | e | ----- | z | 78.25 | n | 70.32 | 87.83 | c | ||||
2000 | 73.31 | b | 75.50 | a | 79.37 | a | 93.83 | 102.47 | a | 104.62 | a | 108.13 | 103.61 | 103.63 | 86.13 | a | 69.43 | 73.29 | 89.44 | |||||||
2001 | 66.71 | 67.11 | 77.45 | 90.57 | 101.23 | a | 107.07 | a | 105.78 | d | 104.03 | b | 104.14 | b | 92.94 | 81.69 | a | 65.72 | b | 88.70 | ||||||
2002 | 71.88 | f | 85.00 | v | 85.27 | a | 93.69 | a | 98.35 | 110.00 | 108.03 | 108.71 | 102.63 | 89.77 | ----- | z | 67.52 | f | 99.56 | d | ||||||
2003 | 76.79 | g | 71.43 | e | 77.04 | g | 87.38 | i | 98.73 | e | 106.97 | 110.67 | j | 107.40 | a | 100.50 | n | 97.65 | n | 76.86 | b | 70.82 | c | 88.70 | f | |
2004 | 69.96 | e | 68.91 | f | 88.45 | 90.50 | d | 100.31 | b | 107.27 | 108.18 | c | 105.22 | h | 102.38 | a | 89.69 | e | 75.88 | e | 68.33 | a | 90.10 | b | ||
2005 | 69.24 | f | 69.18 | 77.17 | h | 89.43 | 97.93 | a | ----- | z | 110.88 | e | 103.53 | a | 102.10 | ----- | z | ----- | z | ----- | z | 95.51 | f | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 67.54 | 71.54 | 77.17 | 85.89 | 94.62 | 103.64 | 105.26 | 102.53 | 99.33 | 89.53 | 76.51 | 67.93 | 86.61 | |||||||||||||
S.D. | 3.24 | 3.78 | 4.73 | 3.79 | 3.79 | 2.79 | 2.44 | 2.85 | 2.61 | 3.24 | 3.50 | 3.33 | 1.36 | |||||||||||||
SKEW | -0.40 | -0.11 | 0.17 | 0.06 | -0.15 | 0.08 | -0.21 | -0.01 | -0.17 | -0.60 | -0.20 | 0.25 | 0.24 | |||||||||||||
MAX | 73.58 | 78.71 | 88.45 | 93.83 | 102.47 | 110.00 | 110.88 | 108.71 | 104.14 | 94.52 | 82.63 | 75.74 | 89.44 | |||||||||||||
MIN | 58.71 | 63.50 | 65.90 | 78.10 | 84.57 | 97.87 | 100.13 | 96.32 | 94.61 | 81.55 | 69.43 | 61.81 | 84.26 | |||||||||||||
YRS | 48 | 50 | 49 | 50 | 49 | 49 | 49 | 46 | 48 | 48 | 48 | 51 | 34 |