YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1945 | ----- | z | ----- | z | 70.15 | d | 82.87 | 93.30 | a | 99.50 | 103.67 | p | 99.21 | b | 98.79 | a | 86.27 | a | 77.79 | b | 67.66 | b | 86.17 | c | ||
1946 | 63.32 | 70.25 | 76.90 | 90.10 | a | 92.60 | a | 106.27 | 102.87 | 99.35 | 96.03 | 83.45 | b | 72.86 | a | 71.81 | 85.49 | |||||||||
1947 | 65.69 | b | 76.32 | 78.77 | 85.30 | c | 97.45 | b | 101.07 | a | 104.71 | 98.26 | 98.57 | 87.90 | a | 68.79 | a | 64.32 | 85.60 | |||||||
1948 | 70.06 | 67.25 | a | 68.90 | a | 88.27 | 95.93 | a | 103.28 | a | 104.19 | 103.23 | 100.63 | 88.13 | 72.10 | 66.06 | 85.67 | |||||||||
1949 | 54.65 | 66.71 | 76.13 | 87.23 | 94.45 | 102.53 | 100.74 | 99.52 | 98.37 | 83.94 | 84.29 | b | 67.48 | 84.67 | ||||||||||||
1950 | 68.26 | 73.79 | 80.03 | 89.33 | 92.81 | 99.63 | 97.61 | 103.29 | 97.43 | 99.55 | k | 80.43 | 76.58 | 87.20 | a | |||||||||||
1951 | 67.00 | 72.07 | 76.29 | 82.07 | 94.26 | 99.50 | 106.81 | 100.84 | 101.83 | 90.61 | 73.43 | 65.77 | 85.87 | |||||||||||||
1952 | 65.39 | 68.72 | 68.10 | a | 82.30 | 97.94 | 102.97 | 102.77 | 102.03 | a | 101.33 | 95.68 | 70.90 | ----- | z | 87.10 | a | |||||||||
1953 | 70.39 | 69.18 | 76.33 | a | 83.90 | 88.39 | 103.30 | 101.94 | 103.42 | 103.93 | 88.87 | 79.63 | 65.74 | 86.25 | ||||||||||||
1954 | 69.45 | 78.52 | a | 74.40 | a | 89.97 | 91.26 | 100.97 | 101.42 | 98.84 | 99.90 | 92.06 | 82.13 | 70.32 | 87.44 | |||||||||||
1955 | 61.65 | 67.39 | 78.42 | 85.47 | 95.03 | 104.40 | 99.71 | 94.61 | 99.90 | 93.77 | 77.23 | 74.35 | 86.00 | |||||||||||||
1956 | 73.74 | 66.31 | 83.61 | 85.60 | 97.58 | 104.43 | 101.39 | 101.13 | 102.63 | 90.42 | 75.83 | 69.77 | 87.70 | |||||||||||||
1957 | 65.87 | 74.54 | 76.87 | 83.87 | 89.06 | 103.60 | 102.48 | 98.87 | 99.07 | 81.94 | 71.30 | ----- | z | 86.13 | a | |||||||||||
1958 | 67.23 | 70.25 | 67.26 | 81.03 | 97.74 | 103.13 | 103.61 | 99.00 | 95.73 | 87.74 | 75.93 | 75.71 | 85.36 | |||||||||||||
1959 | 73.16 | 70.57 | 79.94 | 89.20 | 92.87 | 105.07 | 104.19 | 95.58 | 97.77 | 89.52 | 74.33 | 66.06 | 86.52 | |||||||||||||
1960 | 62.16 | 65.39 | a | 80.87 | 87.23 | 95.03 | 105.70 | 104.97 | 102.58 | 100.70 | 87.23 | a | 79.10 | 67.55 | 86.54 | |||||||||||
1961 | 68.74 | 72.18 | 77.58 | 87.60 | 95.63 | a | 104.90 | 103.65 | 99.81 | 94.83 | 87.19 | 71.53 | 64.10 | 85.65 | ||||||||||||
1962 | 64.65 | 71.75 | 71.29 | 91.43 | 94.16 | 101.57 | 102.94 | 106.00 | 97.50 | 88.29 | 79.21 | a | 70.67 | a | 86.62 | |||||||||||
1963 | 64.61 | 75.54 | 78.29 | ----- | z | ----- | z | ----- | z | ----- | z | 97.35 | 100.87 | 92.55 | 72.00 | a | 67.48 | 81.09 | d | |||||||
1964 | 66.97 | 68.79 | 73.23 | 81.17 | a | 94.77 | 101.80 | 104.10 | 98.00 | a | 92.50 | d | 86.27 | p | 72.53 | 67.80 | a | 83.79 | a | |||||||
1965 | 69.10 | a | 68.67 | a | 74.21 | c | 83.63 | 90.93 | a | 98.60 | 103.68 | 102.86 | b | 96.10 | 93.73 | e | 79.52 | a | 66.25 | c | 85.61 | |||||
1966 | 64.39 | 64.46 | 78.65 | 87.40 | 96.77 | 103.73 | 104.29 | 99.61 | 94.90 | 87.26 | 77.73 | 68.19 | 85.62 | |||||||||||||
1967 | 68.81 | 75.61 | 82.39 | 80.80 | 92.10 | 99.62 | a | 101.03 | 100.55 | 96.63 | 89.61 | 79.97 | 60.45 | 85.63 | ||||||||||||
1968 | 67.26 | 72.97 | 72.71 | 80.87 | 92.77 | 101.53 | 100.06 | 95.39 | 97.23 | 92.60 | a | 74.24 | a | 60.75 | o | 86.15 | a | |||||||||
1969 | 67.55 | 68.57 | 72.32 | 89.97 | 91.84 | 101.08 | d | 102.39 | c | 103.37 | a | 98.90 | 86.48 | 74.27 | 71.84 | 85.71 | ||||||||||
1970 | 67.61 | 74.86 | 73.46 | g | 80.80 | 95.45 | 103.00 | 104.87 | 100.84 | f | 92.07 | a | 83.29 | 78.07 | 70.32 | 85.03 | b | |||||||||
1971 | 69.52 | 71.36 | 75.87 | 83.14 | a | 90.65 | 101.10 | 104.94 | 95.77 | 95.93 | 81.55 | 73.60 | 62.90 | 83.86 | ||||||||||||
1972 | 68.45 | 75.59 | 82.35 | 87.38 | a | 93.03 | 99.97 | 105.77 | a | 100.47 | a | 96.50 | 81.65 | 69.57 | 62.42 | 85.26 | ||||||||||
1973 | 62.74 | 67.32 | 65.94 | 79.07 | 92.67 | a | 101.70 | 102.32 | 103.35 | 98.90 | 90.52 | 76.70 | 69.52 | 84.23 | ||||||||||||
1974 | 66.45 | 71.89 | 78.19 | 85.13 | 95.68 | 106.73 | 100.35 | 100.58 | 95.23 | 86.74 | 74.60 | 64.20 | a | 85.48 | ||||||||||||
1975 | 69.52 | 70.71 | 75.30 | a | 78.90 | 91.29 | 101.20 | ----- | z | 100.90 | ----- | z | ----- | z | 78.73 | ----- | z | 83.32 | d | |||||||
1976 | 69.65 | 74.03 | ----- | z | 81.77 | 93.48 | 103.57 | 99.97 | 102.42 | 94.57 | w | ----- | z | ----- | z | ----- | z | 89.27 | e | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 66.90 | 71.02 | 75.71 | 84.93 | 93.77 | 102.43 | 102.75 | 100.20 | 98.02 | 88.18 | 75.75 | 67.98 | 85.76 | |||||||||||||
S.D. | 3.68 | 3.56 | 4.59 | 3.59 | 2.48 | 2.14 | 2.09 | 2.74 | 2.82 | 3.82 | 3.84 | 3.95 | 0.89 | |||||||||||||
SKEW | -1.03 | 0.12 | -0.41 | 0.08 | -0.14 | 0.16 | -0.36 | -0.20 | -0.06 | -0.06 | 0.16 | 0.38 | 0.11 | |||||||||||||
MAX | 73.74 | 78.52 | 83.61 | 91.43 | 97.94 | 106.73 | 106.81 | 106.00 | 103.93 | 95.68 | 84.29 | 76.58 | 87.70 | |||||||||||||
MIN | 54.65 | 64.46 | 65.94 | 78.90 | 88.39 | 98.60 | 97.61 | 94.61 | 92.07 | 81.55 | 68.79 | 60.45 | 83.86 | |||||||||||||
YRS | 31 | 31 | 30 | 31 | 31 | 31 | 29 | 31 | 30 | 28 | 31 | 27 | 22 |