| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1909 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1910 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1911 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1912 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 90.68 | 87.06 | 79.73 | 71.06 | 68.93 | 51.35 | 74.80 | |||||||
| 1913 | 49.55 | 55.18 | 61.52 | 71.60 | 82.61 | 84.97 | 92.39 | 92.19 | 81.20 | 70.55 | 63.10 | 45.00 | 70.82 | |||||||||||||
| 1914 | 63.26 | l | 60.00 | z | 70.97 | 72.90 | 75.71 | 88.93 | 90.26 | 93.52 | 90.97 | 75.32 | 69.62 | a | 50.68 | 77.89 | ||||||||||
| 1915 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 85.45 | ----- | z | ----- | z | ----- | z | 61.00 | z | 85.45 | ||
| 1916 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 93.63 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 93.63 | ||
| 1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 73.77 | a | 74.57 | ----- | z | 74.17 | ||
| 1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 91.80 | ----- | z | ----- | z | ----- | z | 72.74 | 57.73 | ----- | z | 74.09 | ||||
| 1919 | ----- | z | ----- | z | ----- | z | 46.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.23 | 58.03 | 58.63 | |||
| 1920 | ----- | z | ----- | z | ----- | z | ----- | z | 76.57 | a | ----- | z | ----- | z | ----- | z | 85.27 | ----- | z | ----- | z | ----- | z | 80.92 | ||
| 1921 | 56.16 | 61.07 | 69.03 | 71.73 | 78.48 | 82.67 | 85.81 | 88.87 | 87.47 | 78.45 | 70.63 | 61.39 | 74.31 | |||||||||||||
| 1922 | 50.32 | 56.43 | 62.68 | 69.83 | 79.03 | 87.90 | 92.94 | 94.71 | 85.67 | 73.42 | 60.20 | 59.90 | 72.75 | |||||||||||||
| 1923 | 62.55 | 51.68 | 59.13 | 69.70 | 80.29 | 88.77 | 92.55 | 89.10 | 81.27 | 65.19 | 58.17 | 44.97 | 70.28 | |||||||||||||
| 1924 | 50.68 | 57.97 | 53.74 | 70.77 | 77.00 | 93.77 | 88.94 | 91.90 | 83.50 | 75.48 | 65.79 | a | 48.13 | 71.47 | ||||||||||||
| 1925 | 49.97 | 61.25 | 73.23 | 76.53 | 79.74 | 89.67 | 90.42 | 85.23 | 78.47 | 66.55 | b | 64.68 | b | 54.00 | 72.48 | |||||||||||
| 1926 | 54.06 | 64.00 | 56.19 | 65.17 | 75.10 | 88.87 | ----- | z | 100.71 | 88.90 | 76.68 | 65.10 | 52.68 | f | 73.48 | |||||||||||
| 1927 | 58.45 | 58.93 | 64.45 | 77.67 | 89.16 | 87.23 | 92.29 | 88.32 | 82.57 | 78.58 | 68.87 | 48.00 | 74.54 | |||||||||||||
| 1928 | 56.32 | 50.41 | 66.55 | 69.43 | 77.77 | 88.97 | 94.45 | 87.65 | 83.97 | 72.77 | 58.67 | 54.90 | a | 71.82 | ||||||||||||
| 1929 | 52.06 | 44.64 | 63.00 | 73.80 | 75.68 | 90.40 | 92.68 | 92.48 | 83.67 | 73.16 | 49.23 | 56.42 | 70.60 | |||||||||||||
| 1930 | 43.40 | a | 65.07 | 59.16 | 80.27 | 79.42 | 90.70 | 92.03 | 93.03 | 87.00 | 67.35 | 58.30 | 49.19 | 72.08 | ||||||||||||
| 1931 | 47.90 | 55.93 | 56.39 | 66.93 | 75.42 | 91.73 | 91.74 | 86.94 | 88.30 | 74.42 | 58.80 | 51.06 | 70.46 | |||||||||||||
| 1932 | 45.16 | 62.76 | 58.71 | 74.10 | 80.00 | 88.53 | 94.13 | 90.19 | 79.70 | 69.71 | 63.60 | 44.19 | 70.90 | |||||||||||||
| 1933 | 55.45 | 50.96 | 65.61 | 68.73 | 81.35 | 91.03 | 94.42 | 89.23 | 87.73 | 77.16 | 64.73 | 63.23 | 74.14 | |||||||||||||
| 1934 | 55.74 | 57.93 | 61.00 | 72.20 | 86.61 | 95.10 | 98.61 | 93.84 | 85.90 | 79.43 | a | 62.50 | 54.23 | 75.26 | ||||||||||||
| 1935 | 56.74 | 57.29 | 66.03 | 72.80 | 71.77 | 89.57 | 93.23 | 88.03 | 79.43 | 72.45 | 58.20 | 49.16 | 71.23 | |||||||||||||
| 1936 | 46.68 | 55.10 | 66.55 | 73.50 | 80.35 | 93.63 | 94.13 | 94.32 | 80.10 | 69.58 | 56.27 | 53.81 | 72.00 | |||||||||||||
| 1937 | 44.97 | 52.50 | 58.19 | 71.25 | b | 81.03 | a | 88.23 | 95.65 | 95.06 | 85.53 | 75.32 | 63.30 | 51.55 | 71.88 | |||||||||||
| 1938 | 53.32 | 58.00 | 67.35 | 72.67 | 80.29 | 87.63 | 91.16 | 94.68 | 83.80 | 78.71 | g | 59.73 | 53.94 | 72.96 | ||||||||||||
| 1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 44.00 | z | 9999.00 | |
| 1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 34.00 | z | ----- | z | 9999.00 | |
| 1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 50.00 | z | ----- | z | ----- | z | 9999.00 | |
| 1942 | ----- | z | ----- | z | ----- | z | 36.00 | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| 1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 9999.00 | |
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 52.08 | 56.69 | 62.97 | 72.08 | 79.21 | 89.72 | 92.42 | 91.02 | 84.10 | 73.14 | 62.50 | 52.53 | 72.18 | |||||||||||||
| S.D. | 5.13 | 5.14 | 5.23 | 3.51 | 3.90 | 2.93 | 2.65 | 3.83 | 3.50 | 3.90 | 5.59 | 5.29 | 1.54 | |||||||||||||
| SKEW | 0.06 | -0.41 | 0.13 | 0.34 | 0.69 | -0.27 | -0.17 | 0.47 | 0.08 | -0.32 | 0.04 | 0.30 | 0.71 | |||||||||||||
| MAX | 62.55 | 65.07 | 73.23 | 80.27 | 89.16 | 95.10 | 98.61 | 100.71 | 90.97 | 79.43 | 74.57 | 63.23 | 75.26 | |||||||||||||
| MIN | 43.40 | 44.64 | 53.74 | 65.17 | 71.77 | 82.67 | 85.81 | 85.23 | 78.47 | 65.19 | 49.23 | 44.19 | 70.28 | |||||||||||||
| NO YRS | 19 | 19 | 20 | 20 | 21 | 22 | 20 | 22 | 22 | 22 | 24 | 21 | 17 | |||||||||||||