YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1893 | 59.61 | 52.85 | b | 48.73 | a | 56.00 | 67.90 | 77.77 | 84.74 | 88.87 | 74.43 | 66.35 | 58.83 | 53.90 | 65.83 | |||||||||||
1894 | 43.27 | a | 41.37 | i | 52.73 | a | 67.00 | 71.29 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.57 | h | ||
1895 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1896 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1897 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1898 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1899 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1900 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | ----- | z | ----- | z | ----- | z |
1914 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 89.80 | 89.52 | 86.90 | 85.30 | ----- | z | ----- | z | ----- | z | 87.88 | h | ||||
1919 | 56.13 | 48.57 | 50.68 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.79 | i | |||
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 | 50.87 | ----- | z | ----- | z | 65.37 | 72.45 | 87.67 | 90.81 | 87.39 | 80.00 | 73.84 | 66.10 | 47.03 | 72.15 | b | ||||||||||
1927 | 53.03 | 51.00 | 53.29 | 59.27 | 70.83 | b | 79.13 | 90.13 | 85.39 | 75.83 | 70.68 | 59.60 | 50.68 | 66.57 | ||||||||||||
1928 | 50.00 | 52.48 | 59.90 | 63.23 | 75.52 | 79.47 | 89.71 | 87.61 | 83.03 | 69.94 | 58.40 | 47.58 | 68.07 | |||||||||||||
1929 | ----- | z | 48.29 | 53.61 | 56.38 | a | 73.68 | 78.17 | 87.77 | 88.87 | 79.60 | 71.29 | 65.33 | 60.03 | 69.37 | a | ||||||||||
1930 | 46.68 | 57.68 | 57.10 | 66.00 | 63.00 | 82.27 | 88.13 | 86.35 | 74.63 | 69.19 | 59.80 | 54.03 | 67.07 | |||||||||||||
1931 | 52.65 | 51.89 | 61.06 | 67.87 | 77.97 | 76.40 | 93.52 | 88.61 | 76.43 | 67.74 | 52.45 | a | 46.37 | a | 67.75 | |||||||||||
1932 | 43.94 | 49.38 | 58.33 | a | 60.37 | 68.03 | 81.30 | 86.58 | 86.00 | 84.27 | 67.35 | 65.37 | 45.55 | 66.37 | ||||||||||||
1933 | 46.58 | 46.68 | 57.71 | 61.63 | 62.03 | 77.43 | 91.84 | 88.71 | 80.40 | 76.10 | 65.87 | 57.42 | 67.70 | |||||||||||||
1934 | 56.55 | 57.18 | 68.71 | ----- | z | 75.32 | 76.80 | 88.71 | 88.26 | 80.70 | 71.10 | 58.77 | 52.81 | 70.45 | a | |||||||||||
1935 | 49.37 | a | 53.32 | 48.26 | 61.13 | 69.63 | a | 87.17 | 86.90 | 88.97 | 83.27 | 66.71 | 58.30 | 54.10 | 67.26 | |||||||||||
1936 | 54.00 | 51.76 | 59.93 | a | 65.83 | ----- | z | ----- | z | ----- | z | ----- | z | 87.00 | 68.87 | a | 66.50 | 51.81 | 63.21 | d | ||||||
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | 49.43 | j | 51.11 | 48.52 | 61.13 | 65.26 | 78.17 | 90.39 | 87.06 | 82.57 | 68.87 | 55.53 | 48.81 | 67.04 | a | |||||||||||
1946 | 51.48 | 50.36 | 54.39 | 64.93 | 71.14 | j | 89.13 | 89.33 | j | 89.87 | 64.93 | b | 66.48 | 54.97 | 54.39 | 64.09 | b | |||||||||
1947 | 52.39 | 59.64 | 59.06 | 64.97 | 77.97 | a | 79.30 | 84.63 | a | 85.23 | a | 85.27 | 70.53 | a | 56.83 | 51.10 | 68.91 | |||||||||
1948 | 59.77 | 51.24 | 52.23 | 62.50 | 67.32 | 78.93 | 85.57 | a | 88.35 | 83.77 | 73.03 | 60.47 | 45.87 | 67.42 | ||||||||||||
1949 | 37.42 | 48.11 | 53.29 | 67.80 | 69.13 | 82.43 | 88.32 | 83.52 | 84.13 | 71.58 | 70.13 | 51.23 | 67.26 | |||||||||||||
1950 | 44.87 | 58.93 | 56.70 | a | 68.20 | 73.55 | 79.77 | 89.13 | 90.52 | 77.87 | 74.03 | 64.80 | 60.61 | 69.91 | ||||||||||||
1951 | 50.77 | 55.04 | 58.42 | 65.61 | b | 72.68 | 82.96 | b | 89.10 | 87.55 | 86.70 | 69.19 | 58.70 | 49.81 | 68.88 | |||||||||||
1952 | 45.71 | 51.66 | 49.00 | 65.37 | 75.39 | 75.13 | 88.87 | 88.71 | 86.13 | g | 79.06 | 55.00 | 49.84 | 65.79 | a | |||||||||||
1953 | 56.74 | 54.46 | 57.07 | a | 61.50 | 64.23 | 70.43 | i | 84.58 | l | 85.13 | h | 86.20 | 69.74 | 61.50 | 52.32 | 62.64 | c | ||||||||
1954 | 52.58 | 63.64 | 54.58 | 67.93 | 76.71 | 76.00 | 88.35 | 81.71 | 79.80 | 71.81 | 62.47 | 50.77 | 68.86 | |||||||||||||
1955 | 44.77 | 50.64 | 58.87 | 60.93 | 71.06 | 76.93 | 85.94 | 90.03 | 82.43 | 75.26 | 61.00 | 53.26 | 67.59 | |||||||||||||
1956 | 54.61 | 49.10 | 58.81 | 61.27 | 70.90 | 79.13 | 85.77 | 82.10 | 82.77 | 65.68 | 64.83 | 56.81 | 67.65 | |||||||||||||
1957 | 45.00 | 57.54 | 55.90 | 61.47 | 65.61 | 82.13 | 89.35 | 83.94 | 81.10 | 64.13 | a | 55.70 | 55.68 | 66.46 | ||||||||||||
1958 | 54.03 | 54.68 | 50.68 | 60.07 | 76.10 | 75.57 | 86.10 | 88.81 | 81.83 | 76.23 | 61.07 | 64.26 | 69.12 | |||||||||||||
1959 | 53.74 | 50.25 | 61.52 | 74.00 | f | 69.68 | 81.39 | b | 90.06 | 84.00 | g | 74.33 | 74.03 | 67.47 | 54.00 | 67.65 | b | |||||||||
1960 | 46.42 | 49.59 | 61.77 | 63.53 | 68.23 | 84.90 | 88.06 | 86.16 | 84.27 | 69.55 | 56.73 | 55.00 | 67.85 | |||||||||||||
1961 | 57.65 | 55.32 | 53.52 | 64.48 | a | 64.00 | c | 83.07 | 90.13 | a | 86.10 | 77.20 | 68.65 | 57.86 | a | 52.28 | b | 67.52 | ||||||||
1962 | 53.55 | 50.71 | 51.52 | 68.23 | 64.45 | 78.27 | 84.00 | 85.00 | 81.73 | 70.40 | a | 61.63 | 60.77 | 67.52 | ||||||||||||
1963 | 53.10 | 61.44 | a | 55.06 | 54.50 | 69.23 | 72.57 | 81.39 | 81.74 | 80.57 | 69.23 | 57.43 | 57.23 | 66.12 | ||||||||||||
1964 | 50.48 | 55.21 | 52.81 | 60.53 | 69.62 | e | 73.73 | 83.61 | 83.90 | 78.60 | 74.97 | 53.30 | 50.81 | 65.63 | ||||||||||||
1965 | 53.81 | 56.93 | 54.00 | b | 58.34 | a | 68.52 | 71.93 | b | 83.32 | 82.03 | 73.93 | b | 78.03 | 59.45 | a | 51.48 | 65.98 | ||||||||
1966 | 50.35 | 50.32 | 58.97 | a | 69.77 | 74.27 | a | 77.97 | 83.35 | 86.10 | 80.34 | a | 72.19 | 60.37 | 53.39 | 68.12 | ||||||||||
1967 | 55.10 | 60.25 | 58.29 | 50.13 | 69.71 | 76.14 | a | 87.94 | 91.74 | 78.70 | 75.55 | 65.57 | 47.65 | 68.06 | ||||||||||||
1968 | 53.03 | a | 59.31 | 59.70 | a | 64.17 | ----- | z | ----- | z | 92.00 | v | 78.78 | m | 81.61 | b | 70.29 | 57.28 | a | 47.35 | 61.59 | d | ||||
1969 | 52.26 | 46.64 | 55.16 | 61.57 | 75.00 | 75.39 | b | 87.07 | a | 89.23 | 81.60 | 63.26 | 60.43 | 54.13 | 66.81 | |||||||||||
1970 | 50.65 | 56.76 | c | 57.20 | a | 58.62 | a | 75.50 | a | 83.53 | 92.43 | a | 91.27 | a | 81.17 | 69.45 | 59.66 | a | 47.00 | 68.60 | ||||||
1971 | 54.26 | 52.82 | 55.90 | 58.80 | 64.30 | a | 77.83 | 87.87 | 88.16 | 80.57 | 66.68 | 57.67 | 43.65 | 65.71 | ||||||||||||
1972 | 50.58 | 58.03 | 65.61 | 64.23 | 74.23 | a | 82.18 | b | 90.52 | 85.33 | a | 78.63 | 65.55 | 55.47 | 47.35 | 68.14 | ||||||||||
1973 | 47.27 | a | 53.07 | 49.43 | a | 62.13 | 76.29 | 84.32 | b | 87.13 | 85.74 | 78.83 | 72.58 | 54.23 | 53.13 | 67.01 | ||||||||||
1974 | 49.60 | a | 54.14 | 58.23 | 63.00 | 72.55 | 83.52 | a | 85.87 | 86.97 | a | 86.20 | 70.50 | a | 59.27 | 50.16 | 68.33 | |||||||||
1975 | 54.26 | 52.39 | 53.26 | 54.07 | 73.45 | 81.30 | 86.74 | 85.83 | b | 85.34 | a | 68.77 | 59.27 | 57.16 | 67.65 | |||||||||||
1976 | 58.65 | e | 53.83 | 57.32 | 60.40 | 76.23 | 80.40 | 86.77 | 80.71 | 77.70 | 71.48 | 65.57 | 57.35 | 68.87 | ||||||||||||
1977 | 50.90 | 60.63 | a | 52.84 | 69.40 | 60.97 | 83.55 | a | 86.83 | a | 86.13 | 80.00 | 74.39 | 61.40 | 56.35 | 68.62 | ||||||||||
1978 | 50.71 | 53.36 | 60.43 | a | 58.41 | c | 72.35 | 80.70 | 87.06 | 86.67 | a | 78.73 | 77.68 | 56.27 | 48.90 | 67.61 | ||||||||||
1979 | 43.74 | 50.61 | 56.23 | a | 62.30 | 74.13 | 83.43 | 87.94 | 83.13 | 86.17 | 70.39 | 57.93 | 58.13 | 67.84 | ||||||||||||
1980 | 54.06 | 58.97 | 54.06 | 64.90 | 66.87 | a | 76.30 | 89.87 | 86.38 | b | 82.60 | 73.42 | 63.77 | 60.33 | a | 69.29 | ||||||||||
1981 | 56.03 | a | 59.71 | 55.48 | 66.21 | a | 72.48 | 86.67 | 89.77 | 90.83 | a | 82.90 | 65.74 | 61.40 | 59.65 | n | 71.57 | a | ||||||||
1982 | 49.84 | l | 52.48 | g | 53.50 | e | 60.74 | c | ----- | z | 75.63 | c | 84.10 | a | 86.03 | 77.00 | e | 69.20 | f | 55.13 | 51.36 | f | 70.31 | e | ||
1983 | 55.83 | a | 54.38 | d | 53.12 | e | 55.62 | a | 70.27 | a | 77.38 | d | 84.85 | e | 85.10 | b | 82.68 | b | 71.39 | c | 56.54 | d | 50.83 | b | 66.50 | |
1984 | 57.58 | 57.96 | c | 60.48 | b | 60.87 | g | 77.25 | g | 78.78 | g | 89.85 | d | 87.18 | c | 85.57 | g | 64.59 | d | 57.12 | e | 43.86 | c | 64.83 | d | |
1985 | 50.79 | b | 55.96 | b | 53.42 | e | 68.31 | d | 70.83 | g | 83.91 | g | 88.12 | e | 84.61 | 73.33 | f | 70.85 | d | 54.56 | e | 56.57 | a | 64.80 | c | |
1986 | 59.33 | d | 55.22 | a | 61.36 | c | 63.33 | f | 74.33 | g | 82.23 | d | 84.59 | b | 88.42 | 72.31 | d | 69.85 | d | 62.33 | c | 54.55 | b | 69.02 | b | |
1987 | 51.36 | f | 54.16 | c | 55.52 | f | 72.08 | d | 73.76 | f | 83.24 | e | 81.28 | b | 86.97 | a | 80.26 | c | 74.68 | f | 54.00 | d | 44.93 | d | 69.61 | d |
1988 | 49.64 | c | 58.28 | d | 59.79 | c | 62.88 | f | 70.07 | d | 78.92 | f | 88.74 | d | 86.24 | b | 82.10 | 79.79 | b | 55.69 | a | 51.04 | c | 68.14 | b | |
1989 | 50.79 | c | 49.72 | c | 59.93 | d | 68.96 | c | 68.08 | f | 77.04 | c | 84.50 | c | 81.21 | c | 78.04 | b | 67.57 | a | 63.76 | a | 57.97 | b | 67.22 | a |
1990 | 51.18 | c | 52.12 | c | 57.52 | b | 64.46 | d | 68.52 | b | 77.90 | a | 85.77 | a | 83.73 | e | 78.85 | c | 73.93 | c | 59.45 | h | 44.77 | 67.16 | a | |
1991 | 50.37 | a | 61.17 | d | 49.63 | d | 57.15 | d | 65.32 | c | 74.50 | 85.87 | a | 81.88 | e | 83.00 | b | 73.61 | c | 61.21 | a | 52.59 | b | 66.36 | ||
1992 | 51.47 | a | 53.96 | a | 53.87 | a | 66.83 | a | 74.59 | b | 78.67 | f | 80.97 | a | 86.82 | c | 80.90 | 73.12 | f | 55.85 | c | 46.79 | c | 65.20 | b | |
1993 | 48.50 | c | 48.61 | 60.61 | c | 59.92 | d | 71.52 | d | 76.66 | a | 81.17 | a | 82.13 | a | 80.35 | d | 69.83 | a | 56.57 | b | 51.27 | a | 65.59 | ||
1994 | 56.10 | a | 49.76 | c | 59.90 | a | 62.00 | b | 68.21 | c | 79.97 | a | 87.50 | c | ----- | z | 78.86 | a | 66.63 | a | 49.90 | a | 51.41 | b | 64.57 | a |
1995 | 46.94 | 60.78 | a | 56.03 | 58.07 | c | 62.89 | d | 75.65 | d | 84.48 | d | 85.86 | b | 81.56 | c | 75.15 | e | 67.45 | h | 52.81 | d | 67.29 | a | ||
1996 | 53.68 | i | 55.16 | d | 58.52 | j | 66.68 | k | 69.84 | f | 78.58 | f | 87.32 | i | 88.38 | e | 78.91 | g | 67.24 | n | 60.11 | b | 53.46 | g | 67.88 | i |
1997 | 50.88 | f | 51.96 | e | 63.71 | j | 62.82 | h | 74.35 | e | 74.93 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 67.08 | i | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 51.50 | 54.01 | 56.11 | 62.64 | 70.56 | 79.71 | 87.16 | 86.38 | 80.52 | 70.85 | 59.52 | 52.28 | 67.52 | |||||||||||||
S.D. | 4.53 | 4.08 | 4.19 | 4.41 | 4.39 | 4.06 | 2.82 | 2.66 | 3.93 | 3.77 | 4.16 | 4.64 | 1.10 | |||||||||||||
SKEW | -0.48 | 0.30 | 0.25 | -0.31 | -0.32 | 0.47 | -0.26 | -0.27 | -1.10 | 0.28 | 0.29 | 0.21 | -0.02 | |||||||||||||
MAX | 59.77 | 63.64 | 68.71 | 72.08 | 77.97 | 89.80 | 93.52 | 91.74 | 87.00 | 79.79 | 70.13 | 64.26 | 69.91 | |||||||||||||
MIN | 37.42 | 46.64 | 48.26 | 50.13 | 60.97 | 71.93 | 80.97 | 80.71 | 64.93 | 63.26 | 49.90 | 43.65 | 65.59 | |||||||||||||
YRS | 61 | 64 | 63 | 59 | 56 | 58 | 60 | 60 | 61 | 60 | 62 | 61 | 41 |