YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 91.38 | v | 87.71 | 73.68 | b | 64.43 | a | 75.27 | i | |
1960 | 59.78 | d | 67.52 | 81.13 | 86.75 | b | 93.57 | c | 106.30 | 105.87 | a | 102.68 | f | 100.10 | 84.21 | b | 76.30 | 64.68 | 84.20 | a | ||||||
1961 | 66.46 | c | 72.71 | 77.32 | 86.50 | 92.48 | 104.57 | 104.16 | 100.06 | 93.73 | 86.48 | 70.30 | 63.18 | c | 84.83 | |||||||||||
1962 | 64.03 | 70.71 | 71.97 | 91.40 | 90.90 | a | 100.93 | a | 104.23 | 105.68 | 98.33 | c | 87.06 | 79.41 | a | 66.97 | 85.97 | |||||||||
1963 | 64.52 | 75.89 | 75.90 | 82.10 | 95.74 | 97.93 | 106.03 | 98.39 | 99.03 | 90.58 | 73.53 | 67.10 | 85.56 | |||||||||||||
1964 | 63.90 | 67.31 | 71.50 | a | 81.23 | 93.68 | 100.83 | ----- | z | 97.87 | a | 93.97 | 91.97 | 71.27 | 67.61 | 81.92 | a | |||||||||
1965 | 67.97 | 68.82 | 73.03 | 83.23 | 89.58 | 97.24 | a | 104.48 | 102.93 | a | 95.43 | 92.81 | 78.40 | 62.52 | b | 84.70 | ||||||||||
1966 | 61.23 | 62.25 | 77.90 | 85.80 | 96.19 | 104.27 | 106.74 | 102.20 | a | 95.73 | 87.32 | 77.17 | 66.97 | 85.31 | ||||||||||||
1967 | 67.61 | 73.00 | 82.74 | 81.50 | 93.42 | 99.77 | 102.65 | k | 99.42 | 94.13 | 87.81 | 79.80 | 59.48 | 83.52 | a | |||||||||||
1968 | 65.68 | 71.28 | 73.33 | a | ----- | z | 92.00 | 104.24 | a | 102.06 | 98.42 | 100.27 | 87.90 | a | ----- | z | 67.29 | 86.25 | b | |||||||
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 104.67 | a | ----- | z | 99.30 | 84.00 | 72.70 | 67.13 | 85.56 | g | ||||
1970 | 66.90 | 73.89 | 71.53 | a | 77.03 | 94.16 | 101.17 | 104.68 | 101.52 | d | 94.07 | a | 83.52 | 79.23 | d | 70.10 | 84.82 | |||||||||
1971 | 69.16 | 73.75 | 80.42 | 82.80 | 88.57 | a | 100.38 | a | 105.30 | a | 97.60 | a | 96.83 | 80.52 | 73.87 | 63.23 | 84.37 | |||||||||
1972 | 69.90 | 75.86 | 87.97 | 87.20 | 92.67 | a | 98.31 | q | 104.47 | l | 100.97 | b | 97.67 | 82.83 | b | 69.69 | a | 64.40 | a | 82.91 | b | |||||
1973 | 64.27 | e | 68.20 | c | 67.07 | d | 80.90 | a | 95.03 | 102.57 | 103.45 | b | 103.52 | b | 99.27 | 90.73 | a | 76.45 | a | 72.20 | a | 85.30 | ||||
1974 | 67.41 | b | 73.25 | 79.48 | 85.55 | a | 93.81 | 108.08 | d | 101.81 | 101.71 | 97.28 | a | 85.45 | 74.57 | 64.11 | d | 86.04 | ||||||||
1975 | 66.16 | 70.07 | a | 74.42 | 77.00 | a | 90.60 | a | 100.53 | 102.94 | 104.50 | a | 97.97 | 88.32 | 77.34 | a | ----- | z | 86.35 | a | ||||||
1976 | 70.62 | e | 73.18 | a | 74.58 | 81.27 | 92.81 | 102.07 | b | 100.90 | 100.90 | 92.57 | 82.90 | a | 78.03 | 66.97 | 84.73 | |||||||||
1977 | 64.10 | a | 76.33 | j | 71.20 | f | 85.21 | a | 86.32 | c | 102.38 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 84.50 | h |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 65.86 | 71.11 | 76.27 | 83.47 | 92.44 | 102.08 | 104.09 | 101.05 | 96.80 | 86.78 | 75.40 | 65.79 | 85.16 | |||||||||||||
S.D. | 2.90 | 3.61 | 5.21 | 3.79 | 2.59 | 2.88 | 1.70 | 2.46 | 2.47 | 3.40 | 3.23 | 3.01 | 0.57 | |||||||||||||
SKEW | -0.32 | -0.80 | 0.46 | 0.07 | -0.76 | 0.34 | -0.34 | 0.24 | -0.20 | 0.06 | -0.30 | 0.08 | 0.33 | |||||||||||||
MAX | 70.62 | 75.89 | 87.97 | 91.40 | 96.19 | 108.08 | 106.74 | 105.68 | 100.27 | 92.81 | 79.80 | 72.20 | 86.04 | |||||||||||||
MIN | 59.78 | 62.25 | 67.07 | 77.00 | 86.32 | 97.24 | 100.90 | 97.60 | 92.57 | 80.52 | 69.69 | 59.48 | 84.37 | |||||||||||||
YRS | 17 | 16 | 16 | 16 | 17 | 16 | 14 | 15 | 17 | 18 | 17 | 17 | 10 |