YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1907 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 72.23 | 64.20 | a | 68.22 | j | |
1908 | 66.97 | 67.03 | 76.00 | 82.17 | 86.58 | 95.80 | 99.39 | 97.16 | 93.73 | 81.20 | a | 73.60 | 65.06 | 82.06 | ||||||||||||
1909 | 65.97 | 61.93 | 68.29 | 83.17 | a | 88.90 | 100.13 | 102.32 | 97.71 | 94.73 | 88.87 | 77.23 | 61.45 | 82.56 | ||||||||||||
1910 | 66.97 | 69.96 | 80.84 | 86.13 | 96.84 | 104.60 | 106.10 | 104.16 | 100.10 | 88.03 | 73.50 | 69.16 | 87.20 | |||||||||||||
1911 | 65.71 | 62.88 | c | 75.68 | 81.97 | 88.90 | 100.50 | d | 96.19 | 100.00 | 95.67 | 81.97 | 72.90 | 61.60 | a | 82.00 | ||||||||||
1912 | 69.58 | 72.10 | 67.26 | 73.90 | 87.84 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.14 | g | |||||
1913 | ----- | z | ----- | z | ----- | z | ----- | z | 97.10 | u | 99.60 | 101.58 | 102.32 | 97.17 | 87.45 | 73.60 | 63.06 | 89.26 | e | |||||||
1914 | 68.06 | 69.25 | 77.32 | 83.14 | b | 91.90 | b | 100.07 | 102.29 | 103.33 | a | 98.93 | 86.21 | b | ----- | z | ----- | z | 88.05 | b | ||||||
1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 103.92 | f | 104.61 | 95.28 | a | 92.82 | c | 76.78 | c | 69.34 | b | 87.77 | g | |
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 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | 74.17 | a | 85.07 | 88.45 | 98.43 | 98.65 | 102.23 | 92.67 | 92.84 | 78.70 | 72.84 | 88.40 | b | |||||||||
1951 | 63.50 | a | 65.39 | 70.55 | 76.53 | 88.00 | 96.30 | 103.77 | 97.60 | a | 96.83 | 83.68 | 69.63 | 60.45 | 81.02 | |||||||||||
1952 | 61.10 | 64.34 | 62.19 | 75.73 | 91.29 | 97.77 | 102.00 | 101.87 | 98.63 | 94.48 | 69.03 | 62.71 | 81.76 | |||||||||||||
1953 | 68.92 | e | 67.54 | b | 73.87 | 78.90 | 83.90 | 100.40 | 102.43 | a | 102.35 | 101.47 | 87.13 | 76.27 | 64.41 | b | 83.97 | |||||||||
1954 | 66.59 | b | 75.79 | 69.71 | 86.38 | a | 92.23 | 97.67 | 102.16 | 98.42 | 97.83 | 88.35 | 77.97 | 66.77 | 84.99 | |||||||||||
1955 | 57.23 | 62.54 | 73.26 | 79.13 | 87.35 | 97.30 | 98.81 | 96.74 | 98.33 | 90.81 | 72.67 | 69.26 | 81.95 | |||||||||||||
1956 | 68.68 | 61.07 | 77.29 | 79.53 | 92.13 | 102.03 | 101.26 | 99.68 | 101.57 | 85.26 | 74.27 | 67.32 | 84.17 | |||||||||||||
1957 | 60.71 | 71.82 | 70.19 | 77.33 | 83.52 | 101.80 | 102.90 | 98.77 | 96.80 | 79.03 | b | 65.24 | a | 67.70 | a | 81.32 | ||||||||||
1958 | 64.97 | a | 66.96 | 63.23 | 76.77 | 94.10 | a | 99.37 | 103.55 | 100.32 | 94.53 | 84.52 | 72.83 | 72.00 | 82.76 | |||||||||||
1959 | 67.58 | 63.79 | 75.13 | 85.28 | a | 87.00 | 102.37 | 103.84 | 96.73 | a | 93.97 | 84.77 | 72.57 | 63.65 | 83.06 | |||||||||||
1960 | 58.39 | 60.62 | 76.00 | 84.30 | 91.65 | ----- | z | 105.71 | 101.84 | 100.13 | 83.37 | a | 76.10 | 66.32 | 82.22 | a | ||||||||||
1961 | 70.03 | a | 71.18 | 73.10 | ----- | z | 90.71 | ----- | z | ----- | z | 100.90 | 93.23 | ----- | z | ----- | z | ----- | z | 83.19 | f | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 65.35 | 66.72 | 72.45 | 80.91 | 89.52 | 99.63 | 101.94 | 100.36 | 96.93 | 86.71 | 73.62 | 65.96 | 82.99 | |||||||||||||
S.D. | 3.88 | 4.44 | 4.95 | 3.97 | 3.41 | 2.37 | 2.54 | 2.53 | 2.77 | 4.24 | 3.37 | 3.62 | 1.72 | |||||||||||||
SKEW | -0.83 | 0.36 | -0.57 | -0.18 | 0.16 | 0.24 | -0.51 | 0.03 | 0.16 | 0.16 | -0.67 | 0.30 | 1.17 | |||||||||||||
MAX | 70.03 | 75.79 | 80.84 | 86.38 | 96.84 | 104.60 | 106.10 | 104.61 | 101.57 | 94.48 | 78.70 | 72.84 | 87.20 | |||||||||||||
MIN | 57.23 | 60.62 | 62.19 | 73.90 | 83.52 | 95.80 | 96.19 | 96.73 | 92.67 | 79.03 | 65.24 | 60.45 | 81.02 | |||||||||||||
YRS | 17 | 17 | 18 | 17 | 18 | 16 | 17 | 19 | 19 | 18 | 18 | 18 | 13 |