YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1968 | ----- | z | 70.21 | 72.79 | b | 76.27 | 87.97 | 99.07 | c | 102.10 | b | 97.45 | b | 95.60 | 84.00 | b | 68.70 | c | 55.74 | 82.72 | a | |||||
1969 | 60.29 | 60.11 | a | 67.43 | a | 80.41 | a | 91.71 | 96.93 | 105.30 | a | 107.30 | a | 98.07 | 78.84 | 70.07 | 62.55 | b | 81.58 | |||||||
1970 | 58.71 | 68.56 | a | 68.83 | a | 74.43 | b | 90.47 | a | 98.97 | 104.00 | 103.10 | 95.56 | c | 80.66 | b | 71.14 | a | 57.81 | 81.02 | ||||||
1971 | 59.58 | 64.96 | 71.42 | 77.87 | 82.37 | a | 98.71 | b | 106.79 | b | 101.96 | d | 95.00 | a | 79.00 | 67.31 | a | 54.94 | 79.99 | |||||||
1972 | 56.52 | 68.21 | 80.48 | 80.14 | a | 91.69 | e | 98.76 | a | 107.41 | b | 100.67 | d | 92.41 | c | 75.42 | g | 62.76 | a | 55.90 | 81.36 | a | ||||
1973 | 53.50 | a | 62.89 | 63.10 | 75.00 | 91.66 | b | 99.40 | 105.28 | b | 102.45 | b | 94.61 | b | 84.86 | b | 67.75 | b | 62.59 | d | 80.26 | |||||
1974 | 54.00 | b | 65.04 | c | 73.97 | 79.24 | a | 91.63 | a | 104.31 | d | 103.27 | a | 103.03 | a | 99.07 | b | 84.93 | b | 68.32 | b | 55.70 | d | 81.88 | ||
1975 | 57.20 | f | 63.72 | c | 67.70 | d | 72.30 | c | 85.96 | g | 98.62 | d | 105.68 | c | 101.50 | i | 97.17 | f | 84.31 | e | 69.62 | d | 64.30 | d | 78.28 | d |
1976 | 63.83 | b | 67.04 | e | 69.03 | b | 76.45 | a | 92.19 | 97.67 | c | 104.50 | c | 100.52 | d | 92.20 | 80.27 | a | 72.21 | b | 60.90 | 81.40 | ||||
1977 | 58.48 | 70.04 | d | 68.47 | a | 83.07 | b | 78.12 | e | 102.89 | c | 107.38 | e | 103.95 | k | 95.86 | a | 87.88 | n | 70.89 | k | 63.32 | c | 80.85 | c | |
1978 | 57.60 | a | 63.79 | 71.33 | a | 73.75 | j | 85.14 | j | 103.07 | b | 107.74 | 104.19 | 94.10 | 86.87 | a | 65.03 | a | 54.68 | 80.84 | b | |||||
1979 | 52.50 | e | 62.65 | b | 69.68 | 78.23 | 87.84 | 98.73 | 102.80 | a | 98.28 | b | 100.52 | g | 87.36 | c | 67.41 | a | 61.94 | 78.86 | a | |||||
1980 | 60.06 | 65.38 | e | 65.87 | a | 76.32 | e | 81.72 | b | 97.59 | c | 104.78 | d | 101.23 | 95.43 | 85.38 | e | 70.59 | a | 67.14 | b | 80.96 | ||||
1981 | 62.85 | e | 64.56 | a | 68.75 | c | 84.33 | f | 86.70 | h | 103.85 | c | 106.52 | f | 103.80 | k | 96.86 | b | 79.66 | b | 71.88 | d | 62.53 | a | 76.37 | d |
1982 | 56.81 | 61.77 | b | 67.55 | 75.80 | 88.48 | 97.77 | 101.10 | 100.71 | 92.53 | 77.29 | 62.69 | a | 55.16 | 78.14 | |||||||||||
1983 | 58.77 | 62.46 | 67.26 | 73.19 | c | 87.90 | a | 96.83 | 102.87 | 97.65 | 96.23 | 78.83 | a | 67.27 | 56.94 | 78.85 | ||||||||||
1984 | 61.19 | 65.52 | 73.17 | a | 78.71 | b | 95.65 | 98.67 | 103.03 | 100.53 | a | 99.07 | b | ----- | z | 70.50 | ----- | z | 84.60 | b | ||||||
1985 | 59.52 | 63.25 | 72.19 | 85.60 | 93.74 | 102.86 | a | 108.23 | 106.90 | 92.60 | 82.77 | a | 66.23 | 63.94 | 83.15 | |||||||||||
1986 | 67.90 | 70.14 | 79.52 | 84.03 | a | 95.74 | 105.30 | 103.65 | 104.52 | f | 91.33 | 84.68 | 73.77 | 62.71 | 83.52 | a | ||||||||||
1987 | 61.26 | 67.68 | 71.33 | a | 91.10 | 93.83 | a | 104.67 | 104.19 | 105.55 | i | 98.60 | 89.37 | a | 71.77 | 57.00 | a | 82.80 | a | |||||||
1988 | 57.42 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 93.86 | h | 93.39 | 71.87 | 61.32 | 71.00 | h | ||||
1989 | 58.03 | 64.18 | 78.61 | 90.73 | 92.29 | 102.07 | 109.81 | 103.19 | 98.23 | 84.55 | 75.03 | 64.48 | 85.10 | |||||||||||||
1990 | 59.26 | 61.82 | 75.87 | 85.27 | 89.65 | 102.53 | 106.32 | 102.00 | 98.13 | 86.03 | 71.00 | 55.90 | 82.82 | |||||||||||||
1991 | 58.81 | 72.75 | 64.35 | 79.13 | 86.74 | 95.73 | 107.71 | 104.97 | 97.77 | 89.35 | 69.59 | a | 60.63 | a | 82.29 | |||||||||||
1992 | 60.16 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.16 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 59.00 | 65.51 | 70.81 | 79.68 | 89.57 | 100.22 | 105.18 | 102.01 | 95.68 | 83.92 | 69.24 | 59.92 | 81.34 | |||||||||||||
S.D. | 3.35 | 3.27 | 4.60 | 5.25 | 4.62 | 2.89 | 2.27 | 2.78 | 2.46 | 4.14 | 3.16 | 3.82 | 1.84 | |||||||||||||
SKEW | 0.37 | 0.51 | 0.57 | 0.79 | -0.94 | 0.35 | 0.17 | 0.18 | -0.23 | 0.30 | -0.43 | 0.03 | 0.16 | |||||||||||||
MAX | 67.90 | 72.75 | 80.48 | 91.10 | 95.74 | 105.30 | 109.81 | 107.30 | 99.07 | 93.39 | 75.03 | 67.14 | 85.10 | |||||||||||||
MIN | 52.50 | 60.11 | 63.10 | 72.30 | 78.12 | 95.73 | 101.10 | 97.45 | 91.33 | 77.29 | 62.69 | 54.68 | 78.14 | |||||||||||||
YRS | 23 | 23 | 23 | 21 | 20 | 23 | 22 | 18 | 21 | 21 | 23 | 23 | 13 |