YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1910 | ----- | z | ----- | z | ----- | z | ----- | z | 101.27 | i | 103.72 | a | 106.37 | a | 106.04 | g | 103.28 | a | 89.69 | b | 78.91 | g | 71.60 | a | 94.93 | g |
1911 | 68.92 | e | 67.81 | a | 79.71 | n | 85.08 | e | 90.80 | k | 100.33 | 105.48 | f | 106.65 | n | 99.48 | c | 87.96 | c | 76.47 | 66.10 | 81.52 | d | |||
1912 | 73.95 | l | 75.96 | d | 69.68 | 80.22 | c | 90.90 | b | 101.65 | d | 101.55 | i | ----- | z | 97.83 | a | 82.87 | 78.81 | d | 66.30 | a | 82.69 | c | ||
1913 | 65.57 | a | 68.00 | 72.07 | b | 84.10 | 90.74 | 96.83 | 101.87 | 102.81 | 100.32 | b | 89.52 | 76.77 | 67.65 | 84.69 | ||||||||||
1914 | ----- | z | 73.36 | 81.30 | d | ----- | z | 92.00 | 99.03 | 104.03 | ----- | z | 99.76 | a | 87.80 | a | 81.97 | 63.03 | a | 86.92 | c | |||||
1915 | 66.33 | v | ----- | z | 79.48 | b | 85.73 | 87.81 | e | 103.29 | b | 104.65 | 107.89 | l | 97.65 | j | 93.59 | b | 78.67 | c | 69.84 | 87.88 | d | |||
1916 | 64.24 | b | 76.75 | a | 83.60 | a | 89.04 | c | 95.17 | b | 103.60 | e | 105.00 | o | 101.37 | d | 98.08 | f | 83.64 | f | 77.41 | c | 65.48 | f | 86.40 | d |
1917 | ----- | z | 72.35 | b | 76.42 | 84.07 | 87.75 | g | 105.83 | 106.05 | l | 104.18 | t | 100.59 | m | 94.68 | 81.78 | c | 77.79 | b | 84.70 | e | ||||
1918 | 71.46 | g | 72.00 | a | 79.03 | 85.65 | g | 88.18 | c | 104.96 | c | 104.94 | m | 102.06 | o | 98.70 | j | 91.38 | b | 74.04 | f | 67.87 | 83.90 | f | ||
1919 | 71.77 | 69.50 | 74.96 | d | 88.33 | 93.52 | h | 104.10 | i | 105.25 | w | 102.44 | v | 98.00 | l | 83.28 | f | 74.53 | 71.23 | 75.05 | f | |||||
1920 | 69.78 | d | 72.95 | i | 78.10 | 83.90 | 94.32 | 100.80 | 108.00 | j | 103.20 | u | 96.28 | l | 83.94 | 76.87 | 67.94 | 81.95 | d | |||||||
1921 | 59.91 | h | 66.65 | k | 75.91 | h | 84.93 | 87.48 | b | 102.18 | b | 105.87 | h | 103.06 | m | 95.44 | n | 87.97 | b | 78.84 | e | 67.00 | c | 84.73 | f | |
1922 | 63.96 | c | 69.92 | b | 76.14 | c | 80.71 | b | 97.18 | c | 104.04 | c | 107.00 | i | 106.29 | n | 102.92 | r | 91.62 | b | 76.23 | 72.58 | 81.38 | c | ||
1923 | 71.19 | 71.57 | 76.77 | a | 79.32 | b | 93.38 | j | 98.93 | c | 106.79 | b | 104.52 | 98.12 | f | 88.93 | b | 77.68 | b | 66.65 | 84.23 | b | ||||
1924 | 70.10 | 80.41 | 75.27 | a | 84.89 | b | 97.13 | a | 105.89 | b | 106.96 | d | 106.41 | b | 105.52 | i | 89.37 | d | 82.15 | c | 68.65 | 87.93 | a | |||
1925 | 71.07 | a | 79.08 | b | 82.00 | a | 89.78 | c | 98.36 | f | 103.57 | 108.07 | d | 105.90 | 100.77 | 86.45 | b | 75.59 | c | 71.65 | e | 88.54 | a | |||
1926 | 68.55 | 77.50 | 83.29 | 88.40 | e | 94.10 | a | 105.80 | 107.79 | g | 107.08 | e | 102.17 | g | 93.87 | a | 83.03 | 63.71 | 86.53 | b | ||||||
1927 | 70.00 | 75.42 | b | 77.13 | 87.59 | a | 95.03 | 101.30 | 108.50 | c | 106.53 | a | 100.32 | e | 92.74 | 80.54 | b | 67.19 | 88.52 | |||||||
1928 | 72.77 | 75.97 | 82.57 | a | 87.47 | 96.52 | 103.70 | 108.04 | c | 106.46 | e | 103.75 | f | 90.41 | d | 71.82 | h | 61.77 | 88.57 | b | ||||||
1929 | 65.35 | 70.93 | 79.83 | a | 84.60 | 96.00 | a | 102.07 | 107.59 | d | 107.52 | 100.47 | 94.52 | b | 81.20 | 76.36 | c | 88.87 | ||||||||
1930 | 66.40 | a | 81.77 | b | 80.57 | a | 91.10 | a | 88.94 | 102.24 | a | 107.09 | h | 105.55 | i | 100.89 | l | 90.44 | f | 80.07 | 70.97 | a | 82.76 | d | ||
1931 | 75.60 | p | 72.79 | 84.17 | b | 91.43 | b | 98.77 | 101.00 | 110.68 | 105.81 | 102.39 | b | 93.35 | 75.50 | b | 67.57 | a | 91.22 | a | ||||||
1932 | 67.03 | 69.07 | 82.10 | 86.60 | 92.65 | 101.57 | 105.70 | a | 108.06 | 106.87 | 88.20 | a | 84.04 | c | 65.65 | 88.13 | ||||||||||
1933 | ----- | z | ----- | z | 78.03 | a | 79.14 | a | 86.00 | 102.67 | 109.94 | 106.74 | 102.93 | 95.29 | 83.07 | a | 72.84 | 91.66 | b | |||||||
1934 | 78.71 | 81.11 | 94.39 | 97.60 | 102.32 | ----- | z | 110.58 | 110.06 | 106.00 | 97.06 | 83.27 | 71.23 | 93.85 | a | |||||||||||
1935 | 69.97 | 74.70 | a | 74.53 | a | 84.80 | 92.68 | 108.17 | 108.48 | 105.77 | 105.43 | 92.19 | 78.37 | 71.42 | 88.88 | |||||||||||
1936 | 69.71 | 73.62 | 84.19 | ----- | z | 99.06 | 105.57 | 110.48 | 110.48 | 101.70 | c | 91.35 | 79.97 | 69.70 | a | 90.53 | a | |||||||||
1937 | 58.25 | c | 74.21 | 76.00 | 84.70 | 96.23 | 105.90 | 112.19 | 112.77 | 107.10 | 94.97 | 81.57 | 71.32 | 89.60 | ||||||||||||
1938 | 71.71 | 69.21 | 75.61 | 88.20 | 96.03 | 103.47 | 108.35 | 106.58 | 104.67 | 85.87 | 72.73 | 68.58 | 87.59 | |||||||||||||
1939 | 64.45 | 63.43 | 79.00 | 93.73 | 100.29 | 105.90 | 111.29 | 109.84 | 94.57 | 88.84 | 79.53 | 76.13 | 88.92 | |||||||||||||
1940 | 68.87 | 69.45 | 81.87 | 87.07 | 99.35 | 106.00 | 108.45 | 107.74 | 99.00 | 91.10 | 74.17 | 69.45 | 88.54 | |||||||||||||
1941 | 65.23 | 71.96 | 76.32 | 81.23 | 97.06 | 101.77 | 109.48 | 103.16 | 98.37 | 84.55 | 79.37 | 69.48 | 86.50 | |||||||||||||
1942 | 71.58 | 70.07 | 78.52 | 84.50 | 94.32 | 104.80 | 112.55 | 107.55 | 103.93 | ----- | z | ----- | z | 73.84 | 90.17 | b | ||||||||||
1943 | 71.65 | 76.11 | 82.39 | 90.66 | a | 98.77 | 102.80 | 111.45 | 105.45 | 106.57 | 93.65 | 81.87 | 68.29 | 90.80 | ||||||||||||
1944 | 69.52 | 67.90 | 77.16 | 86.67 | 93.58 | 97.67 | 108.32 | 108.84 | 100.97 | 89.53 | a | 72.40 | 68.16 | 86.73 | ||||||||||||
1945 | 70.03 | 71.68 | 77.43 | a | 89.48 | a | 96.52 | 104.67 | 109.71 | 105.94 | 104.20 | 94.06 | 79.77 | 69.74 | 89.44 | |||||||||||
1946 | 69.77 | 73.68 | 80.97 | 92.43 | 96.55 | 107.67 | 109.03 | 109.42 | 105.57 | 88.71 | 75.47 | 73.03 | 90.19 | |||||||||||||
1947 | 69.42 | 79.86 | 81.35 | 88.73 | 99.74 | 104.03 | 112.06 | 107.45 | 107.97 | 94.56 | d | 73.76 | e | 69.94 | 90.74 | |||||||||||
1948 | 74.06 | 72.31 | 73.97 | 88.43 | 96.10 | 103.20 | 109.90 | 110.39 | 105.83 | 93.19 | 76.73 | 66.35 | 89.21 | |||||||||||||
1949 | 56.52 | 69.14 | 77.61 | 90.47 | 93.84 | 105.37 | 109.52 | 109.03 | 108.20 | 90.71 | 87.70 | 70.14 | b | 89.02 | ||||||||||||
1950 | 67.81 | 77.89 | 82.26 | 92.27 | 94.39 | 102.93 | 106.00 | 109.58 | 101.50 | 97.81 | 85.07 | 78.50 | a | 91.33 | ||||||||||||
1951 | 70.39 | 73.29 | 79.48 | 85.73 | 94.94 | 101.97 | 108.16 | 105.42 | 106.10 | 92.61 | 78.37 | 68.77 | a | 88.77 | ||||||||||||
1952 | 67.00 | 73.55 | 73.77 | 86.03 | 100.97 | 101.17 | 109.39 | 108.77 | 106.17 | 101.48 | 77.00 | 69.45 | 89.56 | |||||||||||||
1953 | 76.10 | 75.61 | 81.42 | 85.17 | 88.48 | 102.00 | 108.77 | 107.29 | 106.13 | 93.84 | 81.93 | 73.03 | 89.98 | |||||||||||||
1954 | 70.48 | 82.86 | 77.45 | 92.13 | 96.74 | 101.00 | 108.10 | 105.19 | 104.87 | 95.52 | 84.33 | 70.48 | 90.76 | |||||||||||||
1955 | 63.42 | 69.86 | 80.81 | 84.17 | 91.29 | 102.23 | 104.90 | 105.29 | 105.20 | 97.00 | 80.27 | 72.65 | 88.09 | |||||||||||||
1956 | 72.68 | 69.79 | 82.52 | 85.20 | 94.94 | 105.23 | 107.10 | 107.90 | 109.07 | 92.00 | a | 80.43 | 74.23 | 90.09 | ||||||||||||
1957 | 65.90 | 77.96 | 79.94 | 86.20 | 90.16 | 107.80 | 110.52 | 106.60 | a | 104.53 | 86.03 | 75.37 | 73.94 | 88.75 | ||||||||||||
1958 | 73.74 | 74.21 | 72.35 | 84.48 | a | 97.58 | 102.13 | 107.84 | 105.61 | 103.67 | 94.77 | 77.97 | 76.06 | 89.20 | ||||||||||||
1959 | 72.87 | 69.46 | 82.87 | 90.10 | 91.81 | 105.97 | 108.00 | 104.26 | 100.00 | 92.68 | 79.93 | 68.19 | 88.85 | |||||||||||||
1960 | 64.45 | 70.00 | 82.77 | 87.57 | 93.26 | 106.77 | 109.23 | 106.71 | 104.10 | 90.03 | 77.17 | 69.29 | 88.45 | |||||||||||||
1961 | 72.19 | 75.46 | 77.94 | 87.80 | 91.81 | 104.93 | 106.61 | 104.84 | 98.57 | 89.90 | 73.70 | 67.60 | a | 87.61 | ||||||||||||
1962 | 68.35 | 71.39 | 72.81 | 92.63 | 90.10 | 101.23 | 106.77 | 109.16 | 102.07 | 91.81 | 82.77 | 72.00 | 88.42 | |||||||||||||
1963 | 65.58 | 80.50 | 77.90 | 80.57 | 95.10 | 98.30 | 107.06 | 102.90 | 101.77 | 91.97 | 77.80 | 72.42 | 87.66 | |||||||||||||
1964 | 66.55 | 70.76 | 74.77 | 82.67 | 90.61 | 99.83 | 105.48 | 103.97 | 99.70 | 94.77 | 73.87 | 70.39 | 86.11 | |||||||||||||
1965 | 70.00 | 73.71 | 75.71 | 84.03 | a | 92.45 | 95.70 | 105.03 | 105.00 | 96.80 | 95.58 | 78.50 | 66.68 | 86.60 | ||||||||||||
1966 | 66.00 | 68.89 | 79.35 | 88.77 | 95.52 | 101.97 | 106.00 | 106.84 | 101.17 | 89.35 | 79.57 | 71.97 | 87.95 | |||||||||||||
1967 | 69.10 | 75.39 | 79.65 | 76.00 | 92.03 | 97.33 | 105.52 | 105.77 | 97.60 | 93.55 | 81.77 | 64.65 | 86.53 | |||||||||||||
1968 | 69.06 | 77.38 | 78.35 | 82.97 | 93.42 | 102.40 | 103.52 | 101.77 | 101.90 | 91.03 | 78.73 | 66.13 | 87.22 | |||||||||||||
1969 | 69.81 | 69.43 | 76.74 | 86.17 | 95.65 | 97.70 | 105.19 | 108.74 | 102.23 | 87.35 | 77.63 | 69.74 | 87.20 | |||||||||||||
1970 | 68.45 | 74.32 | 77.03 | 80.67 | 94.87 | 102.73 | 107.32 | 106.13 | 100.70 | 88.00 | 78.77 | 67.55 | 87.21 | |||||||||||||
1971 | 70.13 | 74.68 | 80.06 | 81.97 | 87.81 | 100.50 | 107.26 | 103.55 | 101.53 | 84.65 | 76.07 | 63.84 | 86.00 | |||||||||||||
1972 | 68.19 | 76.86 | 86.97 | 86.23 | 93.16 | 100.33 | 107.77 | 102.84 | 98.60 | 83.52 | 74.13 | 66.90 | 87.13 | |||||||||||||
1973 | 65.87 | 70.36 | 71.74 | 82.90 | 95.00 | 103.30 | 105.26 | 105.19 | 100.63 | 91.97 | 77.20 | 72.10 | 86.79 | |||||||||||||
1974 | 66.84 | 73.26 | a | 78.48 | 85.27 | 93.84 | 106.43 | 104.10 | 105.84 | 101.83 | 90.13 | 78.97 | 66.74 | 87.64 | ||||||||||||
1975 | 69.74 | 70.46 | 74.77 | 75.63 | 89.84 | 101.63 | 106.19 | 107.52 | 102.43 | 88.00 | 79.00 | 71.23 | 86.37 | |||||||||||||
1976 | 71.52 | 72.59 | 75.81 | 79.73 | 94.39 | 102.77 | 103.90 | 102.90 | 93.47 | 89.39 | 81.10 | 71.61 | 86.60 | |||||||||||||
1977 | 68.42 | 79.61 | 74.32 | 87.03 | 85.06 | 104.60 | 107.06 | 103.00 | 100.23 | 93.55 | 82.07 | 71.65 | 88.05 | |||||||||||||
1978 | 66.74 | 72.14 | 79.60 | a | 82.03 | 94.42 | 108.50 | 109.77 | 106.81 | 99.50 | 94.52 | 74.77 | 64.90 | 87.81 | ||||||||||||
1979 | 62.10 | 70.75 | 76.29 | 86.17 | 92.13 | 104.47 | 107.52 | 102.61 | 105.37 | 93.16 | 77.27 | 74.16 | 87.67 | |||||||||||||
1980 | 71.65 | 74.90 | 75.42 | 84.40 | 87.35 | 103.47 | 109.55 | 105.71 | 101.87 | 92.94 | 81.57 | 76.48 | 88.77 | |||||||||||||
1981 | 74.68 | 76.25 | 77.03 | 87.43 | 93.39 | 107.53 | 108.35 | 108.71 | 103.47 | 88.65 | 83.30 | 75.48 | 90.36 | |||||||||||||
1982 | 69.45 | 75.57 | 76.39 | 85.77 | 93.19 | 100.83 | 105.84 | 105.48 | 99.60 | 90.00 | 75.53 | 68.58 | 87.19 | |||||||||||||
1983 | 73.06 | 72.82 | 77.48 | 81.27 | 95.10 | 102.20 | 108.19 | 102.58 | 103.10 | 91.55 | 79.50 | 72.03 | 88.24 | |||||||||||||
1984 | 73.97 | 77.14 | 83.74 | 85.73 | 100.94 | 102.73 | ----- | z | 105.61 | 104.53 | 88.13 | 77.83 | 66.03 | 87.85 | a | |||||||||||
1985 | 68.97 | 72.21 | 78.65 | 89.87 | 96.45 | 106.87 | 109.55 | 109.23 | 96.13 | 89.87 | 76.33 | 72.39 | 88.88 | |||||||||||||
1986 | 76.55 | 77.04 | 84.90 | 87.53 | 95.90 | 105.93 | 105.26 | 107.42 | 96.33 | 87.87 | 79.90 | 71.16 | 89.65 | |||||||||||||
1987 | 69.10 | 74.04 | 76.94 | 90.93 | 92.68 | 104.40 | 105.13 | 105.29 | 101.83 | 93.03 | 76.30 | 65.48 | 87.93 | |||||||||||||
1988 | 68.97 | 76.41 | 82.35 | 85.20 | 93.68 | 100.80 | 106.58 | 105.71 | 102.00 | a | 96.55 | 80.10 | 71.26 | 89.13 | ||||||||||||
1989 | 67.65 | 74.04 | 84.42 | 93.80 | 95.74 | 103.97 | 108.61 | 105.26 | 103.57 | 91.39 | 81.57 | 72.45 | 90.20 | |||||||||||||
1990 | 70.23 | 72.29 | 81.71 | 88.20 | 92.61 | 104.23 | 107.39 | 104.13 | 102.07 | 92.77 | 79.83 | 66.77 | 88.52 | |||||||||||||
1991 | 68.19 | 79.89 | 72.23 | 85.07 | 91.10 | 98.20 | 104.90 | 104.19 | 100.97 | 95.19 | 78.57 | 66.03 | 87.04 | |||||||||||||
1992 | 67.97 | 73.83 | 75.35 | 88.07 | 94.39 | 100.87 | 104.74 | 105.35 | 102.93 | 92.23 | 75.62 | a | 62.39 | 86.98 | ||||||||||||
1993 | 64.10 | a | 68.79 | 80.84 | 87.77 | 93.19 | 100.60 | 103.26 | 105.42 | 103.50 | 93.32 | 76.50 | 70.97 | 87.35 | ||||||||||||
1994 | 74.61 | 70.57 | 81.87 | 88.17 | 91.68 | 106.33 | 108.71 | 108.32 | 103.70 | 89.87 | 71.90 | 67.42 | 88.60 | |||||||||||||
1995 | 66.74 | 79.11 | 78.61 | 84.71 | b | 88.45 | 99.70 | 107.68 | 109.16 | 105.13 | 94.45 | 84.97 | 73.26 | 89.33 | ||||||||||||
1996 | 73.87 | 77.21 | 81.68 | 89.50 | 98.19 | 104.97 | 108.45 | 108.52 | 100.53 | 91.94 | 79.57 | 70.81 | 90.44 | |||||||||||||
1997 | 70.68 | 74.39 | 85.77 | 86.23 | 100.06 | 100.40 | 106.00 | 107.94 | 102.13 | 89.61 | 80.70 | 66.74 | 89.22 | |||||||||||||
1998 | 71.74 | 69.32 | 77.67 | a | 81.67 | 88.06 | 97.60 | 108.16 | 108.23 | 101.30 | 89.97 | 78.57 | 69.50 | a | 86.82 | |||||||||||
1999 | 73.87 | 75.11 | 78.77 | 81.50 | 92.90 | 100.20 | 105.19 | 106.48 | 102.00 | 97.19 | 83.43 | 72.68 | 89.11 | |||||||||||||
2000 | 73.35 | 74.76 | 79.19 | 90.20 | 98.13 | 103.57 | 106.74 | 107.00 | 101.97 | 87.00 | 74.13 | 74.16 | 89.18 | |||||||||||||
2001 | 68.45 | 71.21 | 81.37 | a | 84.30 | 101.35 | 106.00 | 106.90 | 106.00 | 104.20 | 94.52 | 81.27 | 67.33 | a | 89.41 | |||||||||||
2002 | 70.39 | 75.61 | 78.00 | a | 86.90 | a | 93.42 | 106.20 | 106.81 | 108.81 | 106.47 | 89.52 | 80.87 | 70.00 | 89.41 | |||||||||||
2003 | 78.03 | 72.41 | a | 79.42 | 81.47 | 93.03 | 101.48 | a | 109.03 | 106.68 | 104.97 | a | 98.35 | 74.07 | 71.00 | 89.16 | ||||||||||
2004 | 70.97 | 71.07 | a | 87.42 | 88.15 | c | 97.42 | 103.73 | 106.84 | 107.32 | 102.53 | 88.87 | a | 74.57 | 69.74 | 89.05 | ||||||||||
2005 | 69.06 | 70.32 | 80.03 | 85.50 | 96.65 | 102.60 | 111.16 | 107.39 | ----- | z | 90.94 | 81.77 | 73.13 | a | 88.05 | a | ||||||||||
2006 | 73.23 | 77.79 | 75.19 | 83.90 | 98.74 | 107.73 | 110.77 | a | 107.67 | a | 101.77 | 90.26 | 83.60 | 70.87 | 90.13 | |||||||||||
2007 | 68.74 | 76.92 | b | 85.24 | b | 87.50 | f | ----- | z | 105.77 | h | 109.80 | f | 109.81 | 102.70 | c | ----- | z | ----- | z | ----- | z | 88.68 | g | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 69.37 | 73.68 | 79.00 | 86.09 | 94.14 | 102.94 | 107.60 | 106.48 | 102.30 | 91.36 | 78.83 | 69.89 | 88.43 | |||||||||||||
S.D. | 3.74 | 3.70 | 3.93 | 3.88 | 3.68 | 2.80 | 2.22 | 2.22 | 3.06 | 3.48 | 3.25 | 3.42 | 1.35 | |||||||||||||
SKEW | -0.43 | 0.19 | 0.56 | -0.02 | -0.15 | -0.24 | -0.02 | -0.01 | -0.32 | -0.02 | 0.07 | 0.06 | -0.18 | |||||||||||||
MAX | 78.71 | 82.86 | 94.39 | 97.60 | 102.32 | 108.50 | 112.55 | 112.77 | 109.07 | 101.48 | 87.70 | 78.50 | 91.33 | |||||||||||||
MIN | 56.52 | 63.43 | 69.68 | 75.63 | 85.06 | 95.70 | 101.87 | 101.37 | 93.47 | 82.87 | 71.90 | 61.77 | 84.69 | |||||||||||||
YRS | 89 | 93 | 95 | 93 | 91 | 95 | 85 | 86 | 84 | 93 | 93 | 96 | 72 |