YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.34 | a | 67.35 | 71.85 | j | |
1931 | 68.16 | ----- | z | 79.83 | a | 87.47 | 95.29 | 99.53 | 106.26 | 100.29 | 96.67 | 87.52 | 70.70 | 62.39 | 86.74 | a | ||||||||||
1932 | 63.03 | b | 67.16 | d | 77.65 | 84.37 | 90.13 | 96.90 | 100.43 | a | 104.06 | 101.93 | 87.23 | 80.97 | 63.29 | 84.76 | ||||||||||
1933 | 64.06 | 65.29 | 79.81 | 80.87 | 85.94 | 98.90 | 104.23 | 104.13 | 100.40 | 94.58 | 80.59 | a | 70.74 | 85.79 | ||||||||||||
1934 | 71.16 | 77.04 | 87.94 | 90.57 | 96.26 | 95.07 | 104.20 | a | 103.65 | 101.40 | 92.93 | b | 79.66 | a | 70.11 | c | 89.16 | |||||||||
1935 | ----- | z | 72.00 | b | 74.77 | 84.87 | 89.19 | 104.50 | 102.16 | 103.06 | ----- | z | 89.00 | a | 75.10 | 69.58 | 86.42 | b | ||||||||
1936 | 69.45 | 72.90 | 83.32 | 90.33 | 98.35 | 102.73 | 105.06 | 103.71 | 98.70 | 89.23 | a | 78.60 | 70.10 | 88.54 | ||||||||||||
1937 | 57.45 | 71.61 | 77.90 | 86.37 | 93.87 | 100.93 | 106.10 | ----- | z | 101.83 | a | 93.29 | 80.20 | 72.71 | 85.66 | a | ||||||||||
1938 | 71.90 | 69.86 | 71.61 | 83.93 | 90.65 | 100.67 | 102.90 | 102.52 | 101.43 | 87.65 | 73.27 | 70.03 | 85.53 | |||||||||||||
1939 | 67.48 | 64.43 | 78.45 | 89.33 | 94.71 | 100.47 | 105.84 | 104.94 | 94.23 | 88.06 | 79.57 | 74.48 | 86.83 | |||||||||||||
1940 | 71.26 | 71.86 | 80.58 | 85.62 | a | 96.90 | 104.13 | 106.52 | 105.29 | 98.04 | b | 91.81 | d | 75.07 | 70.35 | 88.12 | ||||||||||
1941 | 66.45 | 73.36 | 76.48 | 79.33 | 93.42 | 97.63 | 104.55 | 100.74 | 96.03 | 84.00 | 78.37 | 69.61 | 85.00 | |||||||||||||
1942 | 69.06 | 69.11 | 75.58 | 81.40 | 90.81 | 100.00 | 107.42 | 103.16 | 101.33 | 90.48 | 80.10 | a | 72.61 | 86.76 | ||||||||||||
1943 | 70.19 | 75.82 | 80.35 | 87.57 | 95.26 | 97.70 | 106.29 | 102.81 | 103.47 | 91.45 | 78.80 | 67.71 | 88.12 | |||||||||||||
1944 | 66.74 | 66.83 | 73.43 | j | 82.30 | 91.77 | 94.67 | ----- | z | 106.19 | d | 100.43 | 91.55 | 71.87 | 69.58 | 84.19 | b | |||||||||
1945 | 66.65 | 71.71 | 72.03 | 82.83 | 90.81 | 95.90 | 105.10 | 102.65 | 100.40 | 90.77 | 77.27 | 67.77 | 85.32 | |||||||||||||
1946 | 69.19 | 72.57 | 79.52 | 90.47 | 93.65 | 105.07 | 106.52 | 106.77 | 101.83 | 86.45 | 72.67 | 71.65 | 88.03 | |||||||||||||
1947 | 67.61 | 78.39 | 80.16 | 86.90 | 96.90 | 101.00 | 109.23 | 104.77 | 103.90 | 92.00 | 72.62 | a | 67.61 | 88.43 | ||||||||||||
1948 | 71.29 | 70.79 | 72.42 | 87.30 | 94.06 | 100.53 | 107.35 | 108.77 | 103.83 | a | 90.53 | a | 74.70 | 65.26 | 87.24 | |||||||||||
1949 | 56.16 | 67.56 | a | 76.10 | a | 88.11 | b | 92.14 | c | 102.18 | b | 106.69 | e | 106.55 | 105.20 | 88.84 | 84.97 | 68.45 | 86.91 | |||||||
1950 | 66.74 | 76.25 | 81.74 | 90.23 | 93.06 | 101.17 | 103.96 | c | 107.23 | 99.97 | 96.16 | 83.15 | c | 77.06 | 89.73 | |||||||||||
1951 | 69.84 | 72.36 | 79.17 | a | 85.07 | a | 94.35 | 100.79 | a | 107.42 | 104.57 | a | 105.00 | 91.81 | 76.07 | 66.84 | 87.77 | |||||||||
1952 | 65.71 | 72.24 | 72.90 | 86.03 | 100.03 | 100.83 | 107.48 | 107.19 | 103.87 | 99.26 | 75.67 | 67.65 | 88.24 | |||||||||||||
1953 | 74.90 | 74.14 | 80.06 | 84.93 | 87.40 | a | 100.87 | 107.45 | 106.29 | 104.00 | 91.55 | 81.77 | 70.58 | 88.66 | ||||||||||||
1954 | 71.19 | 81.68 | 77.55 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 76.81 | i | |||
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | 70.77 | i | 73.41 | a | 72.35 | 86.37 | 98.48 | 103.65 | d | 108.87 | 105.77 | a | 103.64 | b | 94.64 | f | 79.79 | b | 76.77 | 90.91 | b | |||||
1959 | 73.42 | 70.00 | 82.45 | 89.93 | 92.13 | 105.93 | a | 105.50 | y | 104.68 | c | 99.33 | 91.90 | 78.77 | 67.57 | a | 86.92 | a | ||||||||
1960 | 64.14 | b | 69.72 | 83.59 | b | 87.57 | 92.87 | a | 105.63 | 107.00 | s | 104.43 | h | 102.40 | 90.58 | 77.63 | 68.43 | a | 84.26 | b | ||||||
1961 | 71.61 | 76.71 | 80.26 | 89.10 | a | 93.29 | 104.47 | 103.25 | w | 104.96 | f | 98.83 | 91.17 | b | 74.47 | 67.50 | a | 84.74 | b | |||||||
1962 | 69.03 | 73.43 | 74.79 | b | 94.53 | 91.20 | a | 101.18 | b | 106.90 | 108.84 | 101.50 | 92.23 | 83.70 | 71.68 | 89.08 | ||||||||||
1963 | 65.48 | 81.61 | 79.42 | 82.80 | 96.74 | 98.60 | 107.94 | 103.19 | 102.77 | 92.81 | 77.87 | 72.10 | 88.44 | |||||||||||||
1964 | 67.00 | 70.90 | 76.06 | 84.93 | 92.74 | 100.93 | 106.84 | 102.87 | 99.87 | 94.71 | 73.97 | 70.42 | 86.77 | |||||||||||||
1965 | 69.61 | 74.11 | 76.03 | 84.97 | 92.65 | 96.13 | 105.48 | 105.97 | 98.20 | 95.97 | 79.30 | 65.71 | 87.01 | |||||||||||||
1966 | 65.10 | 68.82 | 81.29 | 90.27 | 96.87 | 101.73 | 106.19 | 105.77 | 101.00 | 89.97 | 80.57 | 71.65 | 88.27 | |||||||||||||
1967 | 69.55 | 76.70 | a | 80.52 | 77.20 | 92.39 | 96.87 | 106.26 | 106.61 | 97.97 | 93.94 | 82.77 | 63.93 | a | 87.06 | |||||||||||
1968 | 69.32 | 78.31 | 80.68 | 85.57 | 94.74 | 102.93 | 104.48 | 103.03 | 102.87 | 92.45 | 79.50 | 66.84 | 88.39 | |||||||||||||
1969 | 71.26 | 70.64 | 77.68 | 87.40 | 96.90 | 98.60 | 106.58 | 109.55 | 103.57 | 87.71 | 76.63 | 70.06 | 88.05 | |||||||||||||
1970 | 68.87 | 75.71 | 77.06 | 81.33 | 95.06 | 103.10 | 107.74 | 106.19 | 99.97 | 88.13 | 79.53 | 68.45 | 87.60 | |||||||||||||
1971 | 69.71 | 74.39 | 79.74 | 81.60 | 86.97 | 98.87 | 105.90 | 101.03 | 99.77 | 82.97 | 76.07 | 64.37 | a | 85.12 | ||||||||||||
1972 | 68.39 | 76.59 | 87.58 | 86.53 | 92.58 | 100.80 | 106.65 | 101.90 | 98.10 | 83.39 | 73.13 | 66.00 | 86.80 | |||||||||||||
1973 | 66.06 | 71.21 | 72.48 | 83.30 | 95.13 | 102.57 | 104.52 | 104.81 | 99.77 | 91.71 | 78.00 | 72.68 | 86.85 | |||||||||||||
1974 | 67.74 | 72.89 | 79.52 | 85.20 | 94.00 | 105.50 | 102.37 | a | 105.03 | 101.00 | 90.68 | 78.33 | 67.29 | 87.46 | ||||||||||||
1975 | 70.06 | 71.75 | 75.23 | 76.53 | 90.06 | 100.13 | 104.13 | 105.35 | 100.60 | 88.42 | 79.27 | 70.90 | 86.04 | |||||||||||||
1976 | 71.29 | 74.03 | 76.61 | 80.97 | 94.06 | 101.77 | 103.19 | 102.68 | 94.53 | 88.68 | 79.60 | 71.32 | 86.56 | |||||||||||||
1977 | 68.03 | 79.04 | 75.58 | 87.40 | 85.94 | 103.27 | 104.77 | 102.81 | 99.80 | 93.87 | 81.47 | 73.48 | 87.95 | |||||||||||||
1978 | 67.16 | 72.68 | 79.39 | 83.10 | 93.16 | 105.30 | 106.90 | 104.29 | 98.17 | 93.58 | 74.53 | 64.19 | 86.87 | |||||||||||||
1979 | 62.06 | 71.54 | 76.61 | 85.73 | 91.03 | 101.63 | 104.65 | 100.84 | 104.40 | 93.03 | 76.40 | 72.87 | 86.73 | |||||||||||||
1980 | 70.77 | 75.38 | 75.10 | 84.30 | 86.84 | 101.07 | 105.39 | 103.16 | 99.70 | 91.84 | 80.27 | 75.77 | 87.47 | |||||||||||||
1981 | 74.06 | 76.50 | 78.07 | b | 87.87 | 91.42 | 104.56 | c | 105.94 | 106.45 | 101.67 | 87.32 | i | 82.20 | 73.94 | 89.33 | a | |||||||||
1982 | 68.55 | 74.86 | 75.23 | 84.87 | 92.10 | 98.97 | 103.87 | 103.16 | 98.77 | 89.32 | 75.16 | k | 66.58 | 86.93 | a | |||||||||||
1983 | 71.81 | 72.93 | 77.35 | 81.57 | 94.71 | 100.63 | 105.81 | 101.00 | 100.90 | 90.03 | 77.87 | 70.68 | 87.11 | |||||||||||||
1984 | 71.10 | 75.10 | 82.03 | 84.47 | 99.65 | 99.70 | 101.81 | 102.00 | 101.77 | 85.58 | 76.00 | 64.58 | 86.98 | |||||||||||||
1985 | 66.94 | 70.61 | 77.52 | 89.40 | 95.90 | 105.60 | 107.42 | 106.39 | 94.63 | 89.10 | 74.70 | 70.55 | 87.40 | |||||||||||||
1986 | 76.45 | 76.07 | 85.03 | 86.93 | 95.03 | 103.60 | 103.03 | 105.26 | 94.83 | 87.65 | 78.60 | 69.29 | 88.48 | |||||||||||||
1987 | 68.68 | 74.79 | 78.43 | a | 91.37 | 93.55 | 103.87 | 104.55 | 104.65 | 101.17 | 93.16 | 76.27 | 65.10 | 87.96 | ||||||||||||
1988 | 67.65 | 76.45 | 82.48 | 88.00 | g | 92.71 | 103.75 | r | 104.50 | o | 104.14 | j | 98.78 | l | 95.21 | l | 79.82 | m | 70.68 | l | 79.82 | h | ||||
1989 | 67.33 | g | 73.46 | 83.94 | 94.10 | 95.63 | a | 103.23 | 108.69 | b | 103.00 | b | 102.60 | 91.86 | b | 79.76 | i | 71.35 | e | 92.79 | b | |||||
1990 | 69.14 | c | 70.43 | 80.68 | 88.16 | e | 91.06 | 103.37 | 106.52 | 104.79 | g | 99.57 | g | 92.96 | d | 75.48 | c | 64.38 | b | 84.22 | b | |||||
1991 | 68.58 | e | 79.64 | 72.17 | b | 85.14 | b | 91.96 | c | 97.40 | 103.69 | e | 104.41 | i | 100.78 | l | 94.58 | 79.83 | f | 68.18 | n | 86.65 | d | |||
1992 | 68.93 | c | 75.52 | b | 77.93 | d | 90.08 | e | 95.54 | c | 99.87 | o | 103.74 | ----- | z | ----- | z | ----- | z | ----- | z | 63.35 | e | 82.15 | e | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 68.45 | 73.29 | 78.39 | 85.91 | 93.28 | 101.14 | 105.55 | 104.42 | 100.53 | 90.74 | 77.79 | 69.18 | 87.34 | |||||||||||||
S.D. | 3.58 | 3.67 | 3.70 | 3.71 | 3.15 | 2.85 | 1.89 | 2.15 | 2.71 | 3.21 | 3.18 | 3.45 | 1.16 | |||||||||||||
SKEW | -1.01 | -0.03 | 0.27 | -0.15 | -0.32 | -0.30 | -0.41 | 0.20 | -0.54 | -0.21 | -0.05 | 0.11 | -0.37 | |||||||||||||
MAX | 76.45 | 81.68 | 87.94 | 94.53 | 100.03 | 105.93 | 109.23 | 109.55 | 105.20 | 99.26 | 84.97 | 77.06 | 89.73 | |||||||||||||
MIN | 56.16 | 64.43 | 71.61 | 76.53 | 85.94 | 94.67 | 100.43 | 100.29 | 94.23 | 82.97 | 70.70 | 62.39 | 84.76 | |||||||||||||
YRS | 56 | 58 | 58 | 57 | 58 | 56 | 53 | 51 | 53 | 54 | 54 | 57 | 43 |