| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 69.32 | c | 69.32 | |
| 1935 | 64.45 | 72.43 | 77.06 | 89.77 | 96.39 | 113.80 | 113.61 | 113.61 | 108.30 | 90.13 | 73.37 | 67.58 | 90.04 | |||||||||||||
| 1936 | 67.32 | 71.38 | 84.65 | 94.57 | 102.71 | 111.17 | 116.16 | 115.13 | 105.60 | 89.52 | 77.53 | 63.77 | 91.63 | |||||||||||||
| 1937 | 50.87 | 68.21 | 79.03 | 88.13 | 103.06 | 108.13 | 115.29 | 116.61 | 108.37 | 94.81 | 78.90 | 70.32 | 90.15 | |||||||||||||
| 1938 | 70.35 | 69.14 | 75.77 | 89.77 | 98.48 | 108.33 | 115.26 | 112.97 | 106.73 | 90.26 | 71.07 | 65.74 | 89.49 | |||||||||||||
| 1939 | 64.81 | 64.50 | 79.97 | 94.74 | c | 100.48 | 109.07 | 115.19 | 115.52 | 101.40 | 91.58 | 78.13 | 67.77 | 90.26 | ||||||||||||
| 1940 | 66.77 | 70.38 | 83.65 | 89.73 | 104.39 | 113.57 | 114.45 | 115.03 | 101.83 | 92.03 | 71.53 | 63.81 | 90.60 | |||||||||||||
| 1941 | 65.81 | 71.18 | 79.84 | 82.87 | 99.74 | 105.47 | 114.87 | 108.23 | 102.67 | 85.00 | 76.27 | 64.32 | 88.02 | |||||||||||||
| 1942 | 66.16 | 69.39 | 79.90 | 89.30 | 97.63 | d | 109.55 | a | 118.32 | 113.45 | 104.53 | 93.61 | 77.60 | 69.13 | 90.72 | |||||||||||
| 1943 | 67.87 | 74.82 | 82.13 | 92.83 | 101.90 | 104.07 | 115.32 | 114.42 | 109.17 | 92.39 | 76.37 | 65.29 | 91.38 | |||||||||||||
| 1944 | 64.35 | 68.10 | 79.10 | 85.93 | 98.39 | 102.50 | 113.03 | 114.52 | 107.13 | 94.55 | 74.07 | 66.19 | 88.99 | |||||||||||||
| 1945 | 65.71 | 71.79 | 76.48 | 89.77 | 98.61 | 107.03 | 118.06 | 111.00 | 106.67 | 91.52 | 74.93 | 61.77 | 89.45 | |||||||||||||
| 1946 | 65.35 | 70.61 | 81.61 | 94.17 | 100.06 | 110.53 | 114.45 | 115.61 | 106.93 | 86.84 | 68.70 | 65.65 | 90.04 | |||||||||||||
| 1947 | 62.61 | 74.39 | 84.29 | 91.40 | 104.32 | 107.77 | 116.06 | 111.29 | 110.17 | 91.35 | 72.97 | 62.68 | 90.78 | |||||||||||||
| 1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 115.55 | 114.19 | 107.63 | 92.39 | 73.43 | 62.26 | 94.24 | |||||||
| 1949 | 52.26 | 64.57 | 77.19 | 93.83 | 95.74 | 110.03 | 116.45 | 111.77 | 109.07 | 89.61 | 81.83 | 63.65 | 88.83 | |||||||||||||
| 1950 | 61.61 | 77.25 | 82.00 | 95.30 | 100.52 | 108.83 | 116.94 | 115.35 | 102.83 | 96.13 | 79.57 | 70.16 | 92.21 | |||||||||||||
| 1951 | 65.45 | 71.54 | 79.97 | 90.53 | 100.48 | 109.53 | 117.17 | a | 113.74 | 109.63 | 91.29 | 74.30 | 64.23 | 90.66 | ||||||||||||
| 1952 | 61.77 | 72.28 | 71.90 | 89.20 | 102.97 | 105.93 | 116.55 | 116.10 | 107.80 | 98.61 | 72.03 | 64.26 | 89.95 | |||||||||||||
| 1953 | 69.06 | 73.18 | 82.84 | 90.40 | 92.00 | 106.67 | 117.29 | 112.39 | 109.67 | 92.26 | 77.37 | 65.87 | 90.75 | |||||||||||||
| 1954 | 64.97 | 79.54 | 77.84 | 95.77 | 104.13 | 106.77 | 116.45 | 110.16 | 106.67 | 93.81 | 79.00 | 63.68 | 91.56 | |||||||||||||
| 1955 | 61.81 | 67.46 | 81.68 | 86.77 | 97.23 | 108.23 | 113.32 | 114.74 | 108.59 | a | 97.10 | 76.67 | 68.23 | 90.15 | ||||||||||||
| 1956 | 68.52 | 70.07 | 84.00 | b | 88.83 | 100.39 | 112.13 | 113.52 | 112.00 | 109.63 | 87.44 | d | 72.22 | u | 68.35 | 92.26 | ||||||||||
| 1957 | 61.69 | b | 77.36 | 83.58 | 90.03 | a | 95.90 | 114.10 | 116.65 | 113.68 | 107.43 | 87.39 | 70.59 | a | 64.45 | 90.24 | ||||||||||
| 1958 | 68.68 | 74.68 | 75.71 | 89.10 | 104.84 | 109.73 | 115.16 | 116.97 | 108.47 | 96.94 | 76.00 | a | 69.06 | 92.11 | ||||||||||||
| 1959 | 69.13 | 71.32 | 86.23 | 96.87 | 98.13 | 113.67 | 120.19 | 113.81 | 102.67 | 95.68 | 78.80 | 66.81 | 92.77 | |||||||||||||
| 1960 | 61.42 | 71.17 | 86.16 | 93.77 | 101.39 | 115.70 | 119.45 | 116.16 | 109.90 | 92.52 | b | 74.43 | b | 66.19 | 92.35 | |||||||||||
| 1961 | 65.97 | 75.00 | 82.74 | 95.23 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 74.57 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 64.41 | 71.61 | 80.59 | 90.94 | 100.00 | 109.29 | 115.95 | 113.79 | 106.90 | 92.11 | 75.42 | 65.95 | 90.55 | |||||||||||||
| S.D. | 4.58 | 3.62 | 3.56 | 3.36 | 3.20 | 3.29 | 1.80 | 2.11 | 2.68 | 3.36 | 3.23 | 2.47 | 1.18 | |||||||||||||
| SKEW | -1.59 | 0.09 | -0.42 | -0.19 | -0.42 | 0.07 | 0.50 | -0.65 | -0.79 | -0.09 | -0.15 | 0.21 | -0.08 | |||||||||||||
| MAX | 70.35 | 79.54 | 86.23 | 96.87 | 104.84 | 115.70 | 120.19 | 116.97 | 110.17 | 98.61 | 81.83 | 70.32 | 92.77 | |||||||||||||
| MIN | 50.87 | 64.50 | 71.90 | 82.87 | 92.00 | 102.50 | 113.03 | 108.23 | 101.40 | 85.00 | 68.70 | 61.77 | 88.02 | |||||||||||||
| NO YRS | 26 | 26 | 26 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 25 | 27 | 24 | |||||||||||||