YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1904 | 65.61 | 79.32 | a | 79.26 | 83.40 | 79.19 | ----- | z | 101.00 | o | ----- | z | 81.10 | ----- | z | 71.23 | 64.84 | 75.49 | d | |||||||
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1908 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1913 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.83 | 55.03 | 61.93 | j | ||
1914 | 65.17 | a | 50.75 | 49.50 | c | 54.55 | h | 63.84 | f | 93.70 | 96.42 | 93.90 | 89.53 | 78.26 | 66.07 | 53.42 | 73.67 | b | ||||||||
1915 | 57.90 | 66.04 | 61.90 | 78.34 | a | 89.93 | c | 100.55 | a | 98.03 | a | 93.27 | a | 90.34 | a | 81.42 | 74.80 | 65.33 | a | 79.82 | ||||||
1916 | 67.26 | 71.86 | 81.68 | 80.57 | 95.00 | 102.53 | 95.52 | 93.06 | 88.10 | 80.55 | 68.40 | 63.77 | 82.36 | |||||||||||||
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 93.23 | 97.00 | 98.13 | 92.57 | 88.16 | 71.76 | a | 63.06 | 86.27 | e | ||||||
1935 | 67.17 | a | 64.61 | 77.32 | 82.93 | 85.50 | a | 96.43 | 95.97 | 97.60 | a | 82.48 | a | 80.71 | 67.10 | 58.39 | 79.68 | |||||||||
1936 | 61.81 | 69.82 | a | 76.71 | 82.63 | 87.42 | 98.93 | 94.53 | a | 96.39 | 86.57 | 75.16 | 66.47 | 61.31 | r | 81.49 | a | |||||||||
1937 | ----- | z | 54.84 | c | 68.87 | a | 85.72 | a | 90.81 | 97.07 | a | 98.77 | 98.13 | 89.93 | 81.60 | a | 67.59 | a | 58.43 | a | 81.07 | a | ||||
1938 | 60.37 | a | 70.12 | b | 77.43 | a | 83.97 | a | 91.13 | 95.90 | 94.06 | 95.97 | 89.10 | 83.61 | 67.73 | 63.18 | c | 81.05 | ||||||||
1939 | 61.81 | 64.46 | 83.10 | 84.67 | 94.71 | 101.90 | 97.32 | 94.42 | 94.57 | 85.84 | 67.13 | 72.00 | 83.49 | |||||||||||||
1940 | 61.03 | 68.76 | 79.19 | 89.13 | 88.63 | a | 91.79 | a | 96.87 | 92.07 | a | 90.77 | 80.00 | 65.17 | 61.93 | a | 80.45 | |||||||||
1941 | 59.61 | c | 62.63 | a | 66.94 | 77.77 | 84.90 | 89.33 | 94.29 | 94.48 | 86.03 | 79.87 | a | 68.63 | 62.06 | 77.21 | ||||||||||
1942 | 57.74 | 64.92 | b | 71.58 | 81.20 | 89.48 | 97.80 | 98.58 | 93.20 | a | 86.79 | a | 79.00 | 74.13 | 66.00 | a | 80.04 | |||||||||
1943 | 63.07 | b | 70.79 | 74.30 | a | 87.37 | 91.00 | a | 96.43 | 97.39 | 102.84 | 90.25 | b | 80.42 | 68.48 | a | 56.03 | b | 81.53 | |||||||
1944 | 60.26 | 66.79 | a | 73.23 | 84.90 | 91.16 | 97.93 | 100.77 | 96.94 | 86.30 | 82.48 | 68.29 | b | 56.97 | 80.50 | |||||||||||
1945 | 62.29 | 67.93 | a | 76.32 | 82.53 | 94.29 | ----- | z | 94.52 | 98.48 | 93.00 | a | 77.86 | b | 72.17 | 61.30 | a | 80.06 | a | |||||||
1946 | ----- | z | ----- | z | 78.13 | 88.70 | 90.93 | a | 100.43 | 102.81 | 101.19 | 94.00 | a | 87.07 | a | 69.61 | b | 64.52 | b | 87.74 | b | |||||
1947 | 56.62 | b | 61.89 | 71.71 | 85.54 | d | 94.16 | 102.10 | 103.12 | n | 99.39 | 96.90 | 89.71 | 67.43 | 60.84 | 80.57 | a | |||||||||
1948 | 56.57 | a | 67.04 | a | 71.93 | a | 92.30 | 96.16 | 104.13 | 102.45 | 100.71 | 94.03 | 80.68 | 69.40 | 67.48 | 83.57 | ||||||||||
1949 | 49.13 | 66.20 | c | 77.55 | 76.33 | 94.03 | 99.47 | 101.71 | 97.71 | 92.40 | 80.07 | b | 78.33 | 62.71 | 81.30 | |||||||||||
1950 | 69.03 | 71.79 | 79.87 | 84.23 | 92.52 | 99.77 | 98.26 | 100.74 | 90.27 | 88.81 | 74.60 | 69.48 | 84.95 | |||||||||||||
1951 | 63.03 | 67.86 | 74.37 | a | 85.43 | 94.70 | a | 102.23 | 105.16 | 103.32 | 95.83 | a | 87.90 | 68.86 | a | 66.87 | a | 84.63 | ||||||||
1952 | 68.32 | 68.52 | 72.65 | 80.80 | e | 89.67 | a | 98.38 | f | 97.33 | a | 103.19 | 91.07 | 84.60 | a | ----- | z | ----- | z | 84.02 | c | |||||
1953 | 70.38 | b | 65.85 | a | 77.45 | 80.52 | a | 90.52 | 103.33 | 101.19 | 98.65 | 95.20 | 81.68 | 70.70 | 57.39 | 82.74 | ||||||||||
1954 | 66.13 | 72.11 | 73.06 | 86.07 | 88.00 | 98.03 | 101.48 | 99.48 | 97.90 | 84.87 | 73.17 | a | 67.31 | b | 83.97 | |||||||||||
1955 | 56.71 | 65.59 | a | 76.80 | a | 86.20 | 92.03 | 98.87 | 96.97 | 96.81 | 92.97 | 84.00 | 70.43 | 64.52 | 81.82 | |||||||||||
1956 | 63.19 | 62.76 | 76.52 | 81.00 | 96.03 | 102.83 | 102.10 | 100.16 | 96.40 | 88.84 | 68.77 | 65.10 | 83.64 | |||||||||||||
1957 | 63.33 | a | 69.71 | 74.00 | 79.80 | 88.23 | 99.23 | 103.39 | 101.23 | 93.07 | 76.26 | 62.03 | 67.10 | 81.45 | ||||||||||||
1958 | 57.00 | 61.46 | 64.00 | 80.10 | 90.65 | 101.33 | 103.90 | 99.71 | 90.63 | 74.68 | 69.13 | 61.71 | 79.53 | |||||||||||||
1959 | 61.29 | 63.71 | 74.97 | 80.80 | 92.94 | 99.00 | 97.16 | 100.48 | 96.33 | 82.77 | 64.43 | 62.90 | 81.40 | |||||||||||||
1960 | 59.55 | 61.48 | 70.35 | 85.93 | 92.29 | 102.57 | 97.00 | 96.74 | 92.67 | 82.10 | 71.97 | 53.87 | a | 80.54 | ||||||||||||
1961 | 55.97 | 67.61 | 74.77 | 84.67 | 94.03 | 97.27 | 96.71 | 97.19 | 92.25 | b | 84.48 | 61.80 | 61.47 | a | 80.68 | |||||||||||
1962 | 55.39 | 74.79 | 71.77 | a | 84.43 | 97.10 | 98.37 | 99.16 | 102.19 | 91.27 | 83.48 | 72.27 | 59.94 | 82.51 | ||||||||||||
1963 | 58.60 | a | 68.79 | 77.52 | 87.57 | 95.00 | a | 97.50 | 101.00 | 97.84 | 91.57 | 86.90 | 71.10 | 53.61 | 82.25 | |||||||||||
1964 | 59.06 | 62.97 | 75.50 | a | 86.20 | 93.84 | 99.57 | 102.03 | 100.74 | 88.50 | 83.03 | 72.38 | a | 62.52 | 82.19 | |||||||||||
1965 | 65.00 | 60.86 | 66.81 | 87.87 | 92.17 | a | 97.37 | 100.94 | 95.71 | 94.20 | 84.94 | ----- | z | 64.03 | 82.72 | a | ||||||||||
1966 | 55.61 | 61.07 | 76.87 | 82.03 | 89.39 | 97.00 | 102.55 | 95.10 | 91.43 | 78.90 | 77.17 | 62.87 | 80.83 | |||||||||||||
1967 | 64.90 | 68.07 | 82.29 | 90.00 | 93.00 | 98.03 | 98.87 | 96.87 | 88.03 | 85.45 | 70.23 | 58.35 | 82.84 | |||||||||||||
1968 | 57.55 | 62.03 | 68.26 | 80.90 | 93.94 | 99.33 | 95.61 | 98.23 | 90.87 | 84.06 | 67.80 | 64.84 | 80.28 | |||||||||||||
1969 | 64.77 | 68.50 | 66.97 | 85.20 | 90.45 | 96.50 | 100.23 | 100.06 | 91.50 | 77.52 | 67.57 | 64.52 | 81.15 | |||||||||||||
1970 | 61.45 | 65.29 | 68.52 | 83.03 | 91.68 | 96.13 | 98.26 | 99.68 | c | 90.97 | 77.00 | 72.97 | 69.94 | 81.24 | ||||||||||||
1971 | 67.87 | 68.32 | 79.65 | 84.47 | 92.29 | 97.93 | 98.71 | 91.29 | 90.37 | 81.39 | 74.33 | 64.16 | 82.56 | |||||||||||||
1972 | 66.39 | 70.38 | 83.42 | 91.82 | b | 89.61 | 97.67 | 98.10 | 94.71 | 93.77 | 82.23 | 64.70 | 63.03 | 82.98 | ||||||||||||
1973 | 54.48 | 59.21 | 74.26 | 79.10 | a | 90.84 | 98.47 | 96.68 | 99.16 | 90.53 | 86.65 | 77.43 | 67.97 | 81.23 | ||||||||||||
1974 | 61.39 | 70.36 | 84.19 | 87.07 | 95.19 | 101.00 | 100.97 | 94.30 | d | 80.87 | 79.23 | 66.87 | 59.97 | 81.78 | ||||||||||||
1975 | 61.71 | 66.32 | 74.39 | 83.70 | 91.45 | 101.23 | 94.23 | 98.32 | 87.43 | 85.90 | 74.97 | 64.48 | 82.01 | |||||||||||||
1976 | 62.87 | 77.93 | a | 77.94 | 85.83 | 86.52 | 99.27 | 96.29 | 99.90 | 86.97 | 76.03 | 61.27 | 60.13 | 80.91 | ||||||||||||
1977 | 56.26 | 67.50 | 75.10 | 85.10 | 95.42 | 102.10 | 101.52 | 103.65 | 99.63 | 83.58 | 73.63 | 68.48 | 84.33 | |||||||||||||
1978 | 55.97 | 59.36 | 76.26 | 90.20 | 93.32 | 100.47 | 101.10 | 97.52 | 86.93 | 79.35 | 65.73 | 60.77 | 80.58 | |||||||||||||
1979 | 51.03 | 63.57 | 73.10 | 84.67 | 88.90 | 94.43 | 99.23 | 94.52 | 91.97 | 88.84 | 67.43 | 63.10 | 80.07 | |||||||||||||
1980 | 63.06 | 65.93 | 75.55 | 82.03 | 88.90 | 102.97 | 103.26 | 98.65 | 90.60 | 78.58 | 63.90 | 64.65 | 81.51 | |||||||||||||
1981 | 58.84 | 68.11 | 70.48 | 82.83 | 88.65 | 97.73 | 99.32 | 93.42 | 90.20 | 80.35 | 75.70 | 68.35 | 81.17 | |||||||||||||
1982 | 64.32 | 64.37 | a | 79.35 | 82.83 | 90.77 | 98.31 | a | 100.94 | 100.58 | 95.93 | 82.73 | a | 69.20 | 58.26 | 82.30 | ||||||||||
1983 | 58.65 | 66.07 | 76.10 | 78.63 | 92.81 | 97.17 | 101.42 | 101.29 | 96.57 | 83.58 | 73.93 | 55.26 | 81.79 | |||||||||||||
1984 | 54.19 | 70.00 | 77.42 | 84.63 | 93.10 | 94.60 | 99.35 | 97.00 | 91.00 | 76.68 | 68.90 | 62.03 | 80.74 | |||||||||||||
1985 | 55.39 | 61.93 | 77.29 | 87.53 | 95.13 | 96.43 | 99.81 | 102.26 | 91.93 | 78.06 | 74.00 | 62.65 | 81.87 | |||||||||||||
1986 | 65.16 | 71.18 | 81.35 | 89.97 | 92.29 | 94.43 | 99.00 | 96.94 | 90.40 | 76.97 | 66.03 | 56.97 | 81.72 | |||||||||||||
1987 | 60.26 | 62.96 | 68.87 | 77.14 | a | 87.32 | 92.97 | 97.26 | 96.77 | 88.10 | 83.29 | 70.10 | 61.65 | 78.89 | ||||||||||||
1988 | 56.39 | 66.25 | a | 74.68 | 82.43 | 90.23 | 94.33 | 95.10 | 94.65 | 90.13 | 82.97 | 75.23 | 60.48 | 80.24 | ||||||||||||
1989 | 61.71 | 63.25 | 76.52 | 85.21 | a | 93.55 | 95.97 | 97.65 | 95.35 | 87.60 | 84.26 | 72.23 | 55.77 | 80.76 | ||||||||||||
1990 | 64.55 | 70.75 | 70.68 | 80.27 | 89.23 | 102.97 | 91.87 | 89.84 | 87.47 | 80.58 | 71.93 | 60.87 | 80.08 | |||||||||||||
1991 | 54.10 | 67.36 | 75.19 | 83.10 | 92.45 | 96.90 | 92.32 | 93.26 | 82.23 | 82.97 | 64.67 | 57.42 | 78.50 | |||||||||||||
1992 | 55.84 | 64.97 | 75.23 | 81.40 | 83.61 | 93.97 | 97.35 | 94.26 | 92.73 | 84.94 | 66.67 | 61.29 | 79.35 | |||||||||||||
1993 | 58.52 | 63.14 | 73.06 | 83.37 | 90.45 | 96.90 | 97.29 | 98.87 | 89.63 | 80.61 | 67.30 | 64.03 | 80.27 | |||||||||||||
1994 | 61.90 | 67.39 | 74.90 | 83.87 | 88.48 | 102.20 | 101.06 | 98.32 | 90.70 | 82.26 | 73.83 | 64.29 | 82.43 | |||||||||||||
1995 | 60.65 | 71.18 | 72.65 | 82.10 | 89.87 | 96.27 | 99.97 | 97.00 | 87.90 | 84.84 | 72.37 | 62.84 | 81.47 | |||||||||||||
1996 | 64.10 | 68.10 | 70.97 | 82.60 | 99.29 | 99.37 | 98.16 | 93.61 | 87.53 | 82.26 | 72.03 | 66.06 | 82.01 | |||||||||||||
1997 | 57.00 | 60.43 | 74.81 | 75.13 | 88.06 | 95.83 | 99.35 | 96.39 | 92.00 | 82.13 | 67.73 | 58.03 | 78.91 | |||||||||||||
1998 | 66.90 | 66.64 | 72.87 | 81.23 | 96.00 | 103.27 | 101.65 | 95.00 | 94.20 | 83.42 | 72.13 | 60.52 | 82.82 | |||||||||||||
1999 | 67.68 | 74.46 | 74.58 | 84.47 | 91.00 | 96.60 | 97.68 | f | 99.73 | a | 92.66 | a | ----- | z | ----- | z | ----- | z | 85.15 | d | ||||||
2000 | ----- | z | ----- | z | ----- | z | ----- | z | 98.68 | 95.73 | 103.19 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 99.20 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 60.85 | 66.43 | 74.36 | 83.73 | 91.45 | 98.26 | 98.80 | 97.52 | 90.80 | 82.20 | 69.86 | 62.19 | 81.41 | |||||||||||||
S.D. | 4.56 | 4.76 | 5.37 | 3.55 | 3.46 | 3.10 | 2.89 | 3.11 | 3.74 | 3.56 | 3.83 | 4.12 | 1.53 | |||||||||||||
SKEW | -0.11 | -0.21 | -1.53 | 0.09 | -0.55 | -0.22 | -0.13 | -0.11 | -0.37 | 0.02 | -0.02 | -0.14 | -0.00 | |||||||||||||
MAX | 70.38 | 79.32 | 84.19 | 92.30 | 99.29 | 104.13 | 105.16 | 103.65 | 99.63 | 89.71 | 78.33 | 72.00 | 84.95 | |||||||||||||
MIN | 49.13 | 50.75 | 49.50 | 75.13 | 79.19 | 89.33 | 91.87 | 89.84 | 80.87 | 74.68 | 61.27 | 53.42 | 77.21 | |||||||||||||
YRS | 67 | 68 | 69 | 68 | 69 | 68 | 68 | 69 | 70 | 68 | 68 | 68 | 59 |