YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1903 | 55.55 | 54.14 | 67.32 | 74.20 | 86.97 | 98.13 | 101.55 | 103.68 | 92.13 | 84.94 | 73.33 | 62.74 | 79.56 | |||||||||||||
1904 | 62.10 | a | 69.59 | 70.19 | 80.33 | 89.87 | 99.50 | 101.68 | 101.39 | 92.63 | 80.94 | 73.73 | 62.16 | 82.01 | ||||||||||||
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | 67.58 | 75.50 | 78.52 | 72.13 | 79.13 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.73 | 60.00 | 72.51 | e | |||||||
1907 | 57.13 | ----- | z | ----- | z | ----- | z | ----- | z | 98.29 | p | 103.90 | 101.26 | 93.10 | 78.90 | 69.83 | 65.71 | 81.41 | e | |||||||
1908 | 61.65 | 61.21 | a | 70.65 | 80.90 | 82.97 | 95.10 | 105.32 | 100.10 | 89.00 | a | 76.10 | 68.43 | 57.32 | 79.06 | |||||||||||
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 | 61.42 | e | 65.00 | 70.61 | 78.50 | 83.94 | 90.93 | 98.19 | 99.23 | 95.63 | 86.16 | 74.57 | 64.65 | 80.74 | ||||||||||||
1914 | 62.71 | 64.68 | 73.61 | 74.80 | 85.42 | 91.57 | 99.03 | 99.61 | 91.27 | 81.06 | 71.17 | 53.23 | 79.01 | |||||||||||||
1915 | 53.68 | 59.39 | 72.13 | a | 76.77 | 80.87 | 92.03 | 98.35 | 100.19 | 90.67 | 85.77 | 69.83 | 62.00 | 78.47 | ||||||||||||
1916 | 54.16 | 64.62 | 74.23 | 78.00 | 80.26 | 94.80 | 101.06 | 95.77 | 88.00 | 73.52 | 68.27 | 55.00 | 77.31 | |||||||||||||
1917 | 54.06 | 63.16 | c | 66.00 | 76.13 | 81.13 | 99.07 | ----- | z | 99.13 | 90.20 | 83.52 | 69.30 | 63.81 | 76.86 | a | ||||||||||
1918 | 60.58 | 59.36 | 64.74 | 71.53 | 79.00 | 100.47 | 98.71 | 95.84 | 90.60 | 79.71 | 63.83 | 53.76 | f | 78.58 | a | |||||||||||
1919 | 57.68 | 60.43 | 62.90 | 78.77 | 88.83 | a | 98.67 | 102.13 | 100.23 | 90.34 | a | 73.71 | 63.63 | 58.48 | 77.98 | |||||||||||
1920 | 60.45 | 60.97 | 63.42 | 76.20 | 88.84 | 94.53 | 102.94 | 98.68 | 87.90 | 74.35 | 64.47 | 57.94 | 77.56 | |||||||||||||
1921 | 54.77 | 63.96 | 70.32 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 63.02 | i | |||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 83.33 | c | 88.29 | 95.83 | 103.35 | 103.74 | 90.00 | 81.32 | 74.17 | 66.35 | 87.38 | c | ||||||||
1940 | 62.42 | 64.31 | 74.71 | 79.17 | 92.81 | 102.00 | 102.61 | 104.06 | 91.63 | 84.84 | 68.33 | 63.71 | 82.55 | |||||||||||||
1941 | 59.68 | 66.07 | 69.32 | 72.63 | 88.00 | 92.50 | 102.42 | 97.00 | 90.07 | 74.61 | 70.27 | 58.52 | 78.42 | |||||||||||||
1942 | 61.68 | 61.96 | 70.29 | 75.13 | 84.16 | 97.20 | 106.74 | 102.35 | 94.77 | 83.65 | 73.63 | 65.90 | 81.46 | |||||||||||||
1943 | 61.58 | 68.11 | 71.87 | 81.43 | 88.77 | 91.77 | 104.16 | 102.16 | 99.67 | 84.97 | 70.70 | 59.26 | 82.04 | |||||||||||||
1944 | 59.48 | 60.00 | 69.65 | 74.67 | 86.42 | 89.20 | 101.55 | 103.23 | 97.93 | 86.65 | 67.83 | 64.52 | b | 80.09 | ||||||||||||
1945 | 63.81 | 65.68 | 65.39 | 80.07 | a | 85.10 | 95.40 | 106.29 | 101.81 | 98.43 | 87.06 | 73.07 | 62.74 | 82.07 | ||||||||||||
1946 | 64.42 | 66.32 | 76.23 | 88.10 | a | 89.58 | 97.70 | 102.26 | 103.23 | 97.20 | 77.97 | 69.76 | a | 67.06 | 83.32 | |||||||||||
1947 | 64.10 | 70.61 | 74.35 | 80.13 | 92.10 | 93.90 | 103.00 | 98.06 | 99.60 | 84.74 | 66.77 | 60.42 | 82.32 | |||||||||||||
1948 | 67.10 | a | 63.55 | i | 67.50 | y | 78.27 | 84.32 | 94.37 | 100.87 | 100.97 | 96.43 | 82.26 | 69.60 | 57.17 | b | 83.14 | b | ||||||||
1949 | 43.77 | a | 59.46 | 68.03 | 82.27 | 85.16 | 98.24 | a | 103.06 | 99.84 | 98.00 | 81.94 | 78.13 | 60.11 | d | 79.83 | ||||||||||
1950 | 58.26 | 69.96 | 74.45 | 83.23 | 88.50 | a | 96.43 | 103.61 | 104.52 | 92.67 | 88.47 | a | 76.70 | 70.23 | 83.92 | |||||||||||
1951 | 61.35 | 64.46 | 71.37 | a | 78.70 | 89.28 | f | 96.77 | 103.90 | 99.19 | j | 100.40 | 82.32 | 67.40 | 58.16 | 78.48 | b | |||||||||
1952 | 55.06 | 65.10 | 64.10 | 78.27 | 91.48 | 92.50 | 104.10 | 105.00 | 96.03 | 91.55 | 65.83 | 58.32 | 80.61 | |||||||||||||
1953 | 66.55 | 70.53 | i | 73.39 | 80.73 | o | 78.47 | a | 94.21 | f | 105.14 | b | 100.67 | a | 98.17 | 82.60 | a | 71.20 | 61.00 | c | 81.91 | c | ||||
1954 | 60.90 | a | 72.33 | a | 65.70 | a | 83.69 | a | 92.19 | 93.07 | 103.26 | 96.97 | 94.83 | 84.45 | b | 71.64 | h | 58.10 | 82.32 | a | ||||||
1955 | 54.16 | 59.96 | a | 70.85 | d | 77.04 | f | 84.77 | 94.07 | 99.16 | 100.58 | 95.33 | 85.10 | 68.21 | a | 62.31 | b | 79.50 | a | |||||||
1956 | 62.39 | 61.59 | 73.47 | a | 75.69 | a | 86.00 | 98.43 | b | 100.45 | 98.97 | 97.77 | 79.47 | a | 70.30 | 64.57 | c | 80.76 | ||||||||
1957 | 53.84 | 68.86 | 71.06 | 78.11 | b | 81.87 | a | 98.87 | 102.30 | a | 99.68 | 98.53 | o | 73.88 | g | 64.03 | 60.19 | 77.88 | b | |||||||
1958 | 62.60 | a | 66.33 | a | 62.13 | 75.93 | b | 91.45 | 94.33 | c | 100.48 | 102.77 | 94.73 | 86.13 | a | 68.83 | 66.39 | 81.01 | ||||||||
1959 | 63.13 | 59.70 | a | 75.35 | 84.79 | a | 83.16 | 99.80 | 106.55 | 100.90 | b | 91.57 | 86.23 | a | 70.90 | 60.41 | b | 81.88 | ||||||||
1960 | 54.10 | 60.83 | 76.00 | 80.10 | 87.63 | a | 101.87 | 104.81 | 102.00 | 96.53 | 80.61 | 67.43 | 59.83 | b | 80.98 | |||||||||||
1961 | 63.97 | 68.61 | 71.35 | 81.63 | c | 84.68 | 101.37 | 105.19 | 100.10 | 90.72 | a | 79.97 | 66.17 | 57.03 | 80.90 | |||||||||||
1962 | 59.74 | 61.68 | 64.83 | a | 84.90 | 83.35 | 97.10 | 101.48 | 102.52 | h | 96.82 | b | 83.32 | 71.90 | 64.43 | a | 79.05 | a | ||||||||
1963 | 59.03 | a | 72.07 | 67.68 | 70.90 | 87.23 | 89.10 | 102.06 | 98.62 | b | 92.63 | 82.81 | ----- | z | 61.32 | 80.31 | a | |||||||||
1964 | 57.90 | 62.97 | 66.29 | 74.27 | 83.47 | a | 93.57 | 103.10 | 100.52 | 93.13 | 88.23 | 61.97 | 61.65 | 78.92 | ||||||||||||
1965 | 61.87 | 65.64 | 67.80 | a | 72.69 | a | ----- | z | ----- | z | ----- | z | ----- | z | 90.00 | u | 89.23 | 68.43 | 56.74 | 68.91 | e | |||||
1966 | 58.10 | 61.82 | 74.29 | 83.23 | 90.58 | 96.47 | 101.52 | 103.48 | 94.73 | 83.71 | 70.47 | 61.65 | 81.67 | |||||||||||||
1967 | 63.61 | 70.32 | 73.77 | 67.23 | 85.55 | 91.60 | 103.32 | 103.81 | 91.63 | 87.19 | 72.62 | a | 54.29 | 80.41 | ||||||||||||
1968 | 61.39 | 70.93 | 72.07 | a | 76.67 | 86.26 | 97.52 | a | 101.06 | 94.77 | 94.50 | 82.97 | 69.67 | 55.19 | 80.25 | |||||||||||
1969 | 61.43 | a | 58.54 | 69.77 | a | 78.63 | 88.67 | a | 92.87 | 101.23 | 104.74 | 96.57 | 78.45 | 69.93 | 64.06 | 80.41 | ||||||||||
1970 | 63.00 | 68.18 | 70.61 | 73.40 | 87.48 | 95.87 | 102.87 | 102.29 | 92.87 | 80.10 | b | 70.03 | 56.61 | 80.28 | ||||||||||||
1971 | 62.68 | 67.75 | 72.61 | 75.87 | 81.45 | 93.37 | 103.06 | 102.16 | 93.80 | 78.32 | 67.52 | a | 54.80 | a | 79.45 | |||||||||||
1972 | 58.90 | 69.76 | 81.13 | 78.37 | 86.48 | 95.07 | 104.26 | 98.74 | 90.10 | 75.55 | 64.40 | 55.43 | a | 79.85 | ||||||||||||
1973 | 56.48 | 61.86 | 63.90 | 75.33 | 90.03 | 97.70 | 102.84 | 98.74 | 92.60 | 82.94 | 67.37 | 62.00 | 79.32 | |||||||||||||
1974 | 56.13 | 66.50 | 72.48 | 76.86 | a | 87.71 | 99.73 | 100.58 | 99.31 | b | 97.50 | 81.68 | 69.20 | 58.42 | 80.51 | |||||||||||
1975 | 62.58 | 64.04 | a | 68.13 | 69.10 | 86.55 | 95.17 | 101.45 | 99.13 | 94.87 | 80.23 | 68.59 | a | 64.00 | 79.49 | |||||||||||
1976 | 64.87 | 66.69 | 68.93 | a | 74.69 | a | 89.40 | a | 94.67 | 100.71 | 95.07 | a | 88.17 | 82.03 | 73.10 | 61.48 | 79.98 | |||||||||
1977 | 58.55 | 69.54 | 66.13 | 81.67 | 76.26 | 97.67 | 101.68 | 98.71 | 92.48 | a | 85.03 | 72.03 | 65.84 | 80.46 | ||||||||||||
1978 | 57.97 | 63.46 | 70.48 | 72.62 | a | 86.77 | a | 96.50 | 102.06 | 99.35 | 90.37 | 87.74 | 66.43 | 57.42 | 79.27 | |||||||||||
1979 | 55.13 | 62.07 | 67.94 | 78.30 | 87.84 | 98.40 | 102.48 | 97.16 | 98.10 | 82.81 | 65.53 | 62.94 | 79.89 | |||||||||||||
1980 | 62.42 | 66.03 | 65.58 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.68 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 59.81 | 64.85 | 70.15 | 77.61 | 86.02 | 95.86 | 102.43 | 100.41 | 93.82 | 82.46 | 69.49 | 60.82 | 80.35 | |||||||||||||
S.D. | 4.25 | 4.29 | 4.15 | 4.29 | 3.83 | 3.16 | 1.98 | 2.56 | 3.34 | 4.12 | 3.43 | 3.79 | 1.49 | |||||||||||||
SKEW | -0.96 | 0.13 | 0.14 | 0.00 | -0.44 | -0.08 | 0.01 | -0.20 | 0.10 | -0.33 | 0.14 | 0.08 | 0.18 | |||||||||||||
MAX | 67.58 | 75.50 | 81.13 | 88.10 | 92.81 | 102.00 | 106.74 | 105.00 | 100.40 | 91.55 | 78.13 | 70.23 | 83.92 | |||||||||||||
MIN | 43.77 | 54.14 | 62.13 | 67.23 | 76.26 | 89.10 | 98.19 | 94.77 | 87.90 | 73.52 | 61.97 | 53.23 | 77.31 | |||||||||||||
YRS | 55 | 52 | 53 | 51 | 51 | 50 | 51 | 50 | 51 | 52 | 52 | 53 | 40 |