YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | 65.59 | b | 69.18 | 71.33 | a | 75.57 | 91.20 | a | 99.53 | 103.61 | 100.61 | 95.70 | 81.42 | 76.73 | 65.94 | 83.03 | ||||||||||
1942 | 66.48 | 66.21 | 74.06 | 82.10 | 92.90 | 103.37 | 107.03 | 101.19 | 99.37 | 86.61 | 79.90 | 70.13 | 85.78 | |||||||||||||
1943 | 66.16 | 74.96 | 77.90 | 89.17 | 95.35 | 100.10 | 105.58 | 99.90 | 99.63 | 87.67 | a | 78.53 | 65.45 | 86.70 | ||||||||||||
1944 | 64.97 | 64.55 | 71.52 | 80.27 | 90.55 | 98.50 | 104.90 | 104.97 | 97.17 | 90.42 | 70.07 | 67.23 | 83.76 | |||||||||||||
1945 | 66.75 | g | 69.50 | 69.97 | 82.97 | 92.16 | 99.37 | 104.06 | 102.26 | 99.90 | 88.55 | 76.14 | a | 64.45 | 86.30 | a | ||||||||||
1946 | 62.16 | 69.86 | 78.58 | 89.83 | a | 92.77 | 105.43 | 104.52 | 101.84 | 97.83 | 80.54 | r | ----- | z | ----- | z | 89.20 | c | ||||||||
1947 | 59.29 | x | ----- | z | 77.77 | a | 84.57 | b | 96.07 | a | 101.79 | k | 107.29 | 101.12 | f | ----- | z | ----- | z | ----- | z | 64.05 | i | 91.42 | h | |
1948 | 69.46 | g | 72.00 | n | 69.83 | b | 87.93 | c | 94.97 | a | 102.55 | a | 105.29 | 104.41 | d | 101.03 | 88.55 | 72.82 | b | 64.74 | 89.21 | b | ||||
1949 | 54.90 | 67.14 | 75.29 | 85.79 | b | 93.83 | b | 101.63 | c | 103.19 | 104.61 | 100.70 | 85.58 | 82.20 | 67.14 | b | 85.17 | |||||||||
1950 | 65.13 | 73.39 | 78.84 | 91.52 | e | 93.59 | b | 101.19 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 80.49 | g | |||
1951 | 67.04 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.67 | m | ----- | z |
1952 | 65.10 | a | 69.10 | 68.74 | ----- | z | 95.35 | 100.97 | 101.81 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 83.51 | f | |||||
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 89.42 | 78.00 | a | 66.00 | a | 77.81 | i | |
1954 | 66.26 | 76.64 | 72.29 | 88.70 | 94.19 | 99.43 | 101.94 | 98.87 | 99.63 | 90.97 | 80.40 | 68.10 | 86.45 | |||||||||||||
1955 | 59.19 | 66.36 | 77.19 | 83.50 | 91.23 | 100.70 | 100.61 | 96.71 | 99.30 | 93.29 | 75.77 | 70.10 | 84.50 | |||||||||||||
1956 | 70.23 | 64.07 | 80.10 | 83.27 | 95.55 | 104.60 | 102.97 | 102.29 | 102.27 | 88.58 | 75.17 | a | 68.55 | 86.47 | ||||||||||||
1957 | 65.57 | a | 74.75 | 76.03 | 80.20 | 87.71 | 101.97 | 102.55 | 100.68 | 99.13 | 83.00 | 69.33 | 68.06 | 84.08 | ||||||||||||
1958 | 67.58 | 71.29 | 68.55 | 82.30 | 97.48 | 101.73 | 105.42 | 101.19 | 97.17 | 89.03 | a | 75.43 | 72.81 | 85.83 | ||||||||||||
1959 | 69.77 | 67.29 | 78.35 | 88.13 | 91.32 | 104.03 | 104.42 | 98.23 | 97.80 | 87.32 | 72.90 | 64.55 | 85.34 | |||||||||||||
1960 | 58.90 | 63.54 | a | 79.03 | 86.40 | 93.39 | 104.53 | 104.55 | 100.42 | 100.50 | 83.65 | 74.73 | 66.29 | 84.66 | ||||||||||||
1961 | 68.26 | 72.11 | 76.52 | b | 85.87 | 93.23 | 103.03 | 102.55 | 99.97 | 94.37 | 86.97 | 70.37 | 64.00 | 84.77 | ||||||||||||
1962 | 62.45 | 70.18 | 70.87 | 90.80 | 91.13 | 99.97 | 103.40 | a | 106.48 | 97.07 | 88.71 | 80.04 | e | 68.29 | 85.78 | |||||||||||
1963 | 62.35 | 75.00 | 75.58 | 81.43 | 96.55 | 98.53 | 104.55 | 97.32 | 98.83 | 90.87 | 74.00 | 67.90 | 85.24 | |||||||||||||
1964 | 63.29 | 66.86 | 71.03 | 82.77 | 92.39 | 100.17 | 104.00 | 97.35 | 94.10 | 90.58 | 70.60 | 65.84 | 83.25 | |||||||||||||
1965 | 65.81 | 68.11 | 72.39 | 80.00 | 89.94 | 96.10 | 102.87 | 102.77 | 95.37 | 92.03 | 77.17 | 63.74 | 83.86 | |||||||||||||
1966 | 61.81 | 63.29 | 77.52 | 87.10 | 95.61 | 101.90 | 103.97 | 102.16 | 96.30 | 87.10 | 77.50 | 67.19 | 85.12 | |||||||||||||
1967 | 66.90 | 74.14 | 78.94 | 77.23 | 89.94 | 95.43 | 101.29 | 100.90 | 96.53 | 89.19 | 78.41 | a | 59.84 | 84.06 | ||||||||||||
1968 | 65.32 | 71.86 | 73.00 | 80.03 | 92.10 | 101.83 | 100.52 | 97.77 | 98.17 | 89.23 | 73.07 | 62.61 | 83.79 | |||||||||||||
1969 | 66.77 | 66.29 | 71.19 | 85.10 | 94.97 | 99.17 | 103.48 | 105.26 | 98.47 | 84.26 | 73.73 | 66.87 | a | 84.63 | ||||||||||||
1970 | 65.74 | 73.25 | 72.77 | 79.57 | 93.97 | 102.80 | 105.87 | 102.71 | 94.23 | 83.70 | a | 75.47 | 64.87 | a | 84.58 | |||||||||||
1971 | 66.52 | 70.07 | 78.90 | 82.50 | 89.87 | 100.17 | 106.13 | 98.23 | 97.53 | 80.61 | 73.33 | 61.87 | 83.81 | |||||||||||||
1972 | 66.29 | 74.97 | 86.42 | 86.97 | 94.23 | 100.57 | 106.32 | 101.74 | 97.87 | 81.48 | 68.23 | 61.68 | 85.56 | |||||||||||||
1973 | 60.77 | 65.46 | 66.81 | 79.87 | 94.00 | 101.47 | 104.39 | 103.74 | 99.23 | 91.13 | 72.93 | 68.10 | 83.99 | |||||||||||||
1974 | 63.52 | 69.79 | 76.68 | 84.60 | 94.65 | 105.60 | 101.16 | 102.42 | 97.67 | 86.03 | 73.03 | 61.26 | 84.70 | |||||||||||||
1975 | 64.74 | 67.21 | 72.45 | 75.03 | 90.32 | 100.23 | 103.39 | c | 102.90 | 98.53 | 87.84 | 75.87 | 65.10 | 83.64 | ||||||||||||
1976 | 67.58 | 71.14 | 74.32 | 81.20 | 93.65 | 101.90 | 102.13 | 100.97 | 93.17 | 82.68 | 76.03 | 66.68 | 84.29 | |||||||||||||
1977 | 62.16 | 73.86 | 72.58 | 87.23 | 86.74 | 101.67 | 105.03 | 102.39 | 97.03 | 89.61 | 77.63 | 69.13 | 85.42 | |||||||||||||
1978 | 63.90 | 68.18 | 75.37 | a | 83.10 | 92.48 | 105.37 | 105.73 | a | 97.81 | 92.67 | 88.39 | 71.77 | 61.74 | 83.88 | |||||||||||
1979 | 59.84 | 68.96 | 72.81 | 85.76 | a | 92.61 | 104.20 | 108.48 | 102.48 | 103.62 | a | 94.16 | 72.83 | 70.35 | 86.34 | |||||||||||
1980 | 68.42 | 71.29 | a | 72.48 | 84.96 | c | 90.32 | 104.10 | 108.58 | 104.13 | 100.20 | 89.13 | 78.25 | b | 73.39 | 87.10 | ||||||||||
1981 | 71.74 | 74.35 | b | 74.52 | 89.14 | b | 92.50 | a | 105.30 | 105.10 | 105.50 | c | 101.19 | c | 86.10 | 80.43 | 69.97 | a | 87.99 | |||||||
1982 | 64.03 | a | 70.36 | 73.77 | a | 84.23 | 93.43 | a | 101.87 | 105.31 | b | 103.71 | 99.90 | a | 88.24 | b | 70.72 | a | 62.43 | a | 84.83 | |||||
1983 | 66.29 | 67.41 | a | 70.79 | b | 80.00 | a | 96.45 | b | 102.50 | 106.77 | 101.43 | a | 101.03 | a | 85.45 | 73.40 | e | 66.10 | b | 84.80 | |||||
1984 | 65.61 | 71.62 | 80.42 | 83.37 | 99.97 | 101.83 | 102.32 | 100.61 | 97.87 | 83.19 | 73.93 | a | 62.45 | b | 85.27 | |||||||||||
1985 | 63.28 | b | 67.39 | 75.63 | a | 89.15 | c | 97.24 | b | 104.80 | 106.07 | b | 104.70 | d | 93.79 | a | 86.53 | a | 70.47 | 64.43 | a | 85.29 | ||||
1986 | 70.77 | e | 68.08 | b | ----- | z | 84.52 | a | 94.75 | c | 103.22 | c | 100.25 | c | 102.04 | d | 92.77 | d | 83.47 | a | 72.57 | b | 63.10 | a | 85.05 | a |
1987 | 64.72 | b | 66.68 | c | 72.44 | d | 90.04 | g | 91.69 | b | 103.44 | c | 102.93 | a | 100.64 | f | 96.52 | c | 88.70 | d | 71.54 | b | 58.81 | 81.75 | b | |
1988 | 62.86 | c | 72.65 | c | 78.41 | d | 82.70 | c | 94.15 | e | 102.69 | a | 103.70 | a | 100.89 | c | 95.62 | d | 89.75 | c | 72.93 | 64.00 | 85.03 | |||
1989 | 64.93 | b | 71.83 | d | 82.07 | b | 91.50 | b | 94.03 | b | 102.69 | a | 106.35 | 101.41 | b | 99.19 | d | 87.00 | 75.68 | b | 66.38 | b | 86.92 | |||
1990 | 64.76 | f | 68.62 | b | 75.96 | d | 86.14 | i | 90.90 | b | 104.30 | 100.97 | a | 97.63 | a | 95.53 | 88.45 | b | 74.52 | a | 59.69 | b | 85.66 | b | ||
1991 | 61.67 | g | 74.82 | f | 70.03 | 82.95 | h | 91.67 | d | 97.93 | b | 102.94 | 101.68 | c | 96.17 | a | 88.28 | b | 71.77 | d | 64.24 | f | 90.06 | d | ||
1992 | 62.60 | a | 66.84 | d | 71.39 | 86.96 | b | 92.17 | b | 100.63 | 102.26 | 98.13 | a | 98.57 | b | 88.81 | 70.00 | a | 60.16 | 83.21 | ||||||
1993 | 64.16 | 65.81 | b | 75.14 | b | 85.34 | a | 95.00 | b | 101.50 | 102.73 | a | 99.32 | 97.45 | a | 85.37 | a | 69.83 | 65.07 | a | 83.89 | |||||
1994 | 66.47 | a | 66.71 | 77.11 | c | ----- | z | 90.71 | 104.43 | 103.35 | 103.39 | 96.97 | a | 84.93 | b | 67.97 | 63.73 | a | 84.16 | a | ||||||
1995 | 61.39 | 73.22 | a | ----- | z | 81.33 | 88.55 | b | 100.33 | c | 105.33 | a | 103.61 | 98.70 | 88.57 | a | 75.77 | 67.17 | a | 85.82 | a | |||||
1996 | 67.96 | c | 72.24 | 76.77 | 87.11 | b | 96.14 | b | 105.40 | 104.96 | d | 102.97 | 92.83 | a | 85.26 | 75.63 | c | 67.21 | c | 86.21 | ||||||
1997 | 62.93 | a | 69.00 | a | 81.86 | c | 80.93 | a | 97.93 | a | 100.10 | 104.87 | 101.97 | b | 98.90 | 85.65 | 73.34 | a | 59.97 | 84.79 | ||||||
1998 | 64.97 | 62.04 | 71.93 | d | 77.63 | 89.14 | b | 98.77 | 104.80 | a | 104.52 | 98.07 | a | 85.24 | b | 73.59 | a | 64.32 | 82.92 | |||||||
1999 | 68.90 | a | 73.04 | 78.57 | c | 80.32 | b | 92.34 | b | 100.93 | a | 100.72 | b | 102.80 | a | 96.71 | b | 89.55 | b | 80.45 | a | 65.24 | b | 85.80 | ||
2000 | 69.93 | a | 72.38 | 73.90 | a | 87.52 | a | 98.66 | b | 103.14 | a | 106.32 | 101.66 | b | 99.52 | a | ----- | z | 64.31 | a | 67.03 | 85.85 | a | |||
2001 | 60.87 | a | 65.70 | a | 75.93 | c | 80.97 | a | 97.87 | 104.10 | a | 102.38 | b | 101.03 | b | 100.14 | b | 86.97 | 75.14 | a | 61.68 | c | 84.40 | |||
2002 | 66.76 | b | 73.89 | 77.43 | c | 87.87 | 94.03 | b | 106.93 | c | 104.71 | 102.37 | l | 98.40 | 83.86 | b | 76.48 | c | 62.24 | b | 84.78 | a | ||||
2003 | 72.66 | b | 67.61 | 76.74 | 82.46 | b | 94.81 | 103.21 | b | 107.52 | 104.00 | g | ----- | z | 91.55 | b | 69.93 | a | 65.11 | c | 83.16 | b | ||||
2004 | 65.90 | a | 64.40 | d | 84.78 | d | 82.57 | b | 95.03 | a | 102.45 | a | 104.32 | 102.03 | a | 98.17 | 84.59 | b | 69.18 | b | 64.59 | b | 84.83 | |||
2005 | 65.61 | c | 66.70 | a | 73.61 | 86.14 | b | 95.67 | a | 103.64 | b | 108.14 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 85.64 | e | |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | 100.91 | t | 107.81 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | 86.17 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 86.17 | k |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 65.10 | 69.47 | 75.13 | 84.09 | 93.38 | 101.95 | 104.17 | 101.58 | 97.79 | 87.30 | 74.20 | 65.36 | 84.93 | |||||||||||||
S.D. | 3.27 | 3.50 | 3.95 | 3.84 | 2.69 | 2.37 | 2.03 | 2.33 | 2.41 | 2.98 | 3.63 | 3.20 | 1.14 | |||||||||||||
SKEW | -0.29 | 0.03 | 0.41 | -0.14 | -0.04 | -0.37 | 0.09 | -0.25 | -0.28 | -0.14 | -0.06 | 0.15 | 0.44 | |||||||||||||
MAX | 72.66 | 76.64 | 86.42 | 91.52 | 99.97 | 106.93 | 108.58 | 106.48 | 103.62 | 94.16 | 82.20 | 73.39 | 87.99 | |||||||||||||
MIN | 54.90 | 62.04 | 66.81 | 75.03 | 86.74 | 95.43 | 100.25 | 96.71 | 92.67 | 80.61 | 64.31 | 58.81 | 82.92 | |||||||||||||
YRS | 58 | 60 | 61 | 59 | 63 | 61 | 62 | 56 | 58 | 58 | 59 | 58 | 47 |