YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1898 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 97.71 | q | 94.03 | 86.65 | 71.13 | 55.23 | 76.76 | h | ||||
1899 | 59.71 | 62.46 | 74.45 | 81.27 | 87.97 | 96.67 | 97.76 | j | ----- | z | ----- | z | 82.13 | 72.83 | 65.42 | 75.88 | c | |||||||||
1900 | 68.16 | 64.93 | 77.00 | 75.40 | 92.71 | 102.07 | 102.84 | 97.93 | p | 91.91 | g | 82.23 | 67.24 | e | 62.45 | 79.50 | b | |||||||||
1901 | 61.94 | 63.67 | a | ----- | z | 76.50 | d | 88.54 | e | 97.00 | 102.58 | 99.94 | 94.93 | 82.68 | 72.33 | 63.29 | 82.13 | a | ||||||||
1902 | 62.74 | 69.11 | 70.77 | a | 85.50 | b | 90.53 | a | 102.53 | 101.26 | 98.10 | 92.69 | a | 86.45 | 68.50 | 59.52 | 82.31 | |||||||||
1903 | 61.13 | 59.27 | f | 70.97 | ----- | z | ----- | z | ----- | z | ----- | z | 99.08 | s | 93.93 | 84.81 | 76.23 | 66.23 | 75.55 | f | ||||||
1904 | 61.26 | 74.59 | 78.00 | 85.17 | 90.20 | a | 99.23 | 101.35 | 94.96 | d | 89.63 | c | 81.17 | b | 73.04 | d | 60.73 | a | 82.44 | |||||||
1905 | 62.37 | d | 61.31 | b | 68.28 | b | 76.97 | a | 86.63 | a | 94.50 | 97.65 | 96.45 | 86.40 | o | 79.77 | 66.17 | 53.61 | 76.70 | a | ||||||
1906 | 59.61 | 66.93 | 74.94 | 78.90 | 86.68 | 95.68 | h | 96.45 | 93.61 | 93.95 | h | 84.71 | 70.30 | 61.97 | 77.41 | b | ||||||||||
1907 | 60.32 | 70.00 | 76.26 | 81.73 | ----- | z | 94.00 | 96.68 | 94.84 | 92.10 | 77.15 | e | 65.70 | 62.10 | 79.17 | a | ||||||||||
1908 | 62.89 | l | 65.54 | a | 73.42 | 78.30 | 84.14 | i | 95.40 | 95.23 | 92.45 | 91.17 | ----- | z | 70.97 | 57.79 | b | 80.03 | c | |||||||
1909 | 64.23 | 63.36 | 67.00 | 80.03 | 85.52 | 97.67 | ----- | z | ----- | z | 90.10 | 86.29 | 73.27 | 54.61 | 76.21 | b | ||||||||||
1910 | 60.03 | 65.61 | 79.47 | a | 81.67 | 90.61 | 98.97 | 99.10 | 96.13 | 93.73 | ----- | z | 69.97 | 64.29 | 81.78 | a | ||||||||||
1911 | 63.61 | 63.79 | ----- | z | ----- | z | 91.36 | f | 98.00 | 93.35 | ----- | z | 94.37 | 81.38 | b | 67.59 | a | 55.35 | 77.18 | d | ||||||
1912 | 63.71 | 68.86 | 71.90 | 77.20 | 90.80 | a | 101.50 | h | 98.21 | c | 95.29 | 94.57 | 81.63 | a | 71.37 | 59.26 | 79.35 | a | ||||||||
1913 | 59.06 | 62.96 | 70.12 | e | 83.92 | d | 92.70 | a | 99.12 | d | 100.23 | 99.23 | 93.07 | a | 86.06 | 72.17 | 58.07 | a | 81.39 | |||||||
1914 | 66.68 | 68.74 | a | 76.10 | u | 86.73 | 94.65 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 79.20 | h | |||
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 | ----- | 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 | ----- | 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 | 92.59 | a | 83.52 | 71.97 | 59.23 | 76.82 | h | |||
1938 | 60.48 | 64.57 | 70.84 | 81.13 | 89.35 | 99.43 | 99.19 | 98.56 | d | 92.93 | 85.23 | 65.97 | 62.32 | 80.83 | ||||||||||||
1939 | 58.06 | 55.64 | 73.65 | 82.10 | 91.52 | 99.90 | 99.77 | 97.68 | 91.70 | 80.29 | 67.07 | 63.84 | 80.10 | |||||||||||||
1940 | 58.81 | 63.38 | 74.23 | 80.20 | 90.81 | 98.07 | 101.55 | 96.16 | 91.17 | 82.35 | 64.27 | 60.68 | 80.14 | |||||||||||||
1941 | 58.26 | 64.50 | 68.81 | 72.77 | 87.87 | 95.57 | 99.16 | 95.87 | 90.60 | 79.26 | 70.83 | 60.42 | 78.66 | |||||||||||||
1942 | 62.13 | 62.61 | 70.50 | e | 79.93 | 90.03 | 99.20 | 101.16 | 96.16 | 91.40 | 80.81 | 73.83 | 62.58 | 80.86 | ||||||||||||
1943 | 59.35 | 69.75 | 72.39 | 85.30 | 90.84 | 97.47 | 99.45 | 94.68 | 92.13 | 80.52 | 70.73 | 57.84 | 80.87 | |||||||||||||
1944 | 57.27 | a | 63.28 | 68.48 | 76.23 | 87.19 | 96.87 | 98.74 | 97.45 | 90.57 | 82.50 | a | 65.00 | 59.61 | 78.60 | |||||||||||
1945 | ----- | z | 67.23 | b | 66.23 | 77.87 | 90.37 | d | 96.77 | 100.42 | 97.42 | 95.27 | 82.19 | 71.63 | 59.39 | 82.25 | a | |||||||||
1946 | 53.77 | 65.71 | 73.10 | a | 86.27 | 89.16 | 103.00 | 101.06 | 96.35 | 92.73 | 80.39 | 65.07 | 63.81 | 80.87 | ||||||||||||
1947 | 53.97 | 69.68 | 72.53 | a | 80.17 | 92.32 | 97.20 | 102.77 | 96.68 | 96.67 | 85.00 | 64.67 | 58.39 | 80.84 | ||||||||||||
1948 | 60.23 | a | 60.38 | 64.81 | 83.70 | 89.72 | b | 100.03 | 101.06 | 98.71 | 94.00 | 80.97 | 62.70 | 57.58 | 79.49 | |||||||||||
1949 | 48.68 | 61.29 | ----- | z | 80.60 | 90.55 | 98.70 | 98.77 | 98.10 | 94.67 | 81.13 | 75.90 | 58.87 | 80.66 | a | |||||||||||
1950 | 59.35 | 69.96 | a | 73.81 | 84.90 | 88.84 | 99.33 | 96.19 | 98.71 | 93.80 | 92.39 | 76.00 | 68.23 | e | 83.46 | |||||||||||
1951 | ----- | z | 64.39 | 70.59 | b | 78.77 | 89.74 | 99.23 | 104.94 | 97.97 | a | 98.24 | a | 85.26 | 66.53 | 59.35 | 83.18 | a | ||||||||
1952 | 61.19 | 63.41 | 64.39 | 79.53 | 92.29 | 100.10 | 101.74 | 99.37 | a | 97.63 | 89.32 | 66.43 | 58.61 | 81.17 | ||||||||||||
1953 | 65.55 | 64.86 | 72.58 | 80.27 | 84.74 | 102.37 | 101.71 | 97.35 | 96.03 | 83.03 | 72.60 | 58.58 | 81.64 | |||||||||||||
1954 | 62.97 | 71.96 | 68.94 | 84.57 | 89.23 | 96.90 | 100.03 | 93.03 | 93.57 | 85.63 | a | 74.50 | 63.48 | 82.07 | ||||||||||||
1955 | 56.06 | 61.25 | 72.97 | 79.77 | 85.59 | b | 96.55 | a | 97.90 | 95.81 | 95.33 | 86.26 | 71.97 | 66.39 | 80.49 | |||||||||||
1956 | 66.06 | 61.59 | 77.13 | 78.87 | 92.26 | 101.50 | 98.68 | 97.71 | 98.30 | 86.32 | 68.53 | 63.42 | 82.53 | |||||||||||||
1957 | 61.58 | 73.50 | 71.29 | 79.87 | 83.94 | 99.27 | 99.84 | 95.16 | 93.63 | 77.65 | 65.00 | 62.87 | 80.30 | |||||||||||||
1958 | 60.87 | 66.93 | 63.10 | 77.00 | 92.87 | 99.93 | 99.84 | 98.19 | 90.93 | 80.71 | 70.37 | 68.94 | 80.81 | |||||||||||||
1959 | 66.77 | 65.39 | 73.58 | 83.03 | 89.13 | 100.23 | 99.52 | 93.26 | 93.63 | 84.23 | 67.23 | 61.32 | c | 81.44 | ||||||||||||
1960 | 57.07 | b | 60.48 | 76.06 | 81.90 | 89.19 | 99.90 | 99.84 | 98.26 | 96.07 | b | 81.84 | 73.20 | 59.97 | 81.15 | |||||||||||
1961 | 61.13 | 67.07 | 71.87 | 80.73 | 90.23 | 99.90 | 100.52 | 94.94 | 89.23 | 80.97 | 63.43 | 58.59 | i | 81.82 | a | |||||||||||
1962 | 57.83 | b | 68.04 | 67.06 | 86.57 | 89.16 | 96.47 | 96.23 | 99.81 | 92.53 | 83.19 | 74.17 | 63.56 | d | 81.22 | |||||||||||
1963 | 59.16 | 70.71 | 74.11 | c | 80.80 | 92.39 | 96.73 | 100.52 | 93.68 | 93.37 | 87.16 | 70.53 | 62.84 | 81.83 | ||||||||||||
1964 | 59.03 | 62.14 | 68.43 | a | 78.79 | a | 89.35 | 96.57 | 100.10 | 95.30 | a | 89.03 | 86.19 | 67.62 | a | 63.04 | h | 81.14 | a | |||||||
1965 | 63.43 | c | 64.86 | 69.52 | 80.10 | 87.31 | b | 94.60 | 97.97 | 98.42 | 92.03 | 86.71 | 75.47 | 61.19 | 80.97 | |||||||||||
1966 | 58.77 | 59.39 | 74.36 | c | 83.00 | 91.35 | 97.80 | 100.10 | a | 96.03 | 90.30 | 82.58 | 75.07 | 64.32 | 81.09 | |||||||||||
1967 | 64.87 | 70.32 | 78.96 | e | 78.53 | 86.00 | b | 93.80 | 97.68 | 95.71 | 90.38 | f | 84.65 | 74.24 | a | 57.12 | f | 82.48 | b | |||||||
1968 | 60.75 | c | 68.41 | 70.93 | a | 78.85 | d | 88.58 | 98.87 | 96.26 | 92.39 | 91.73 | 85.10 | 71.32 | b | 62.29 | 80.46 | |||||||||
1969 | 66.10 | 65.46 | 68.90 | 83.87 | 89.84 | 96.70 | 99.13 | 99.87 | 93.13 | 81.68 | 69.17 | 61.70 | a | 81.30 | ||||||||||||
1970 | 61.19 | 67.39 | 70.58 | 77.93 | 90.65 | 98.40 | 100.77 | a | 98.70 | a | 89.85 | c | 78.53 | a | 74.35 | d | 66.24 | b | 81.22 | |||||||
1971 | 65.68 | 69.04 | 76.94 | 80.83 | 90.33 | d | 103.07 | 99.96 | h | 93.92 | f | 91.90 | 76.26 | 68.30 | 56.14 | c | 77.85 | b | ||||||||
1972 | 63.31 | b | 69.31 | 81.23 | 81.37 | 88.71 | 95.10 | 100.26 | 96.42 | 91.83 | a | 78.52 | 65.57 | 60.03 | 80.97 | |||||||||||
1973 | 62.19 | 63.71 | 62.70 | d | 72.73 | h | ----- | z | 94.58 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 62.87 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 60.95 | 65.68 | 71.84 | 80.72 | 89.55 | 98.31 | 99.52 | 96.61 | 93.04 | 83.03 | 70.00 | 61.10 | 81.02 | |||||||||||||
S.D. | 3.65 | 3.81 | 4.19 | 3.10 | 2.29 | 2.34 | 2.20 | 2.05 | 2.27 | 3.20 | 3.70 | 3.43 | 1.02 | |||||||||||||
SKEW | -0.64 | 0.04 | -0.07 | 0.04 | -0.37 | 0.13 | -0.38 | -0.30 | 0.42 | 0.28 | -0.13 | 0.04 | -0.24 | |||||||||||||
MAX | 68.16 | 74.59 | 81.23 | 86.73 | 94.65 | 103.07 | 104.94 | 99.94 | 98.30 | 92.39 | 76.23 | 68.94 | 83.46 | |||||||||||||
MIN | 48.68 | 55.64 | 62.70 | 72.77 | 83.94 | 93.80 | 93.35 | 92.39 | 89.03 | 76.26 | 62.70 | 53.61 | 78.60 | |||||||||||||
YRS | 49 | 51 | 48 | 49 | 47 | 47 | 46 | 44 | 47 | 50 | 52 | 49 | 31 |