YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1900 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1901 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1902 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1903 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1904 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1905 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1906 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1907 | ----- | z | 78.68 | 81.42 | 90.37 | 96.16 | 106.40 | 112.65 | 107.19 | 103.03 | 89.42 | 81.93 | 72.53 | a | 92.71 | a | ||||||||||
1908 | 67.85 | e | 66.59 | 83.74 | ----- | z | 96.61 | 109.77 | 107.29 | 107.42 | 102.83 | 94.42 | 74.77 | 74.94 | 89.66 | a | ||||||||||
1909 | 72.00 | 74.61 | 86.06 | ----- | z | ----- | z | ----- | z | ----- | z | 104.35 | 99.57 | 93.10 | 80.93 | ----- | z | 87.23 | e | |||||||
1910 | 70.61 | 76.00 | 85.65 | 93.17 | 104.19 | 111.20 | 108.97 | 105.32 | 103.57 | 91.06 | 76.17 | 73.45 | 91.61 | |||||||||||||
1911 | 70.45 | 68.89 | 85.81 | 88.78 | c | 99.19 | 110.57 | 110.97 | 114.39 | 107.43 | 88.74 | 71.69 | a | 70.73 | i | 92.45 | a | |||||||||
1912 | 76.23 | a | 77.69 | 72.48 | 75.37 | 90.97 | ----- | z | ----- | z | 109.06 | 103.63 | 87.03 | 79.40 | 65.97 | 83.78 | b | |||||||||
1913 | 58.13 | 64.46 | 69.29 | 80.57 | 92.19 | 101.57 | 105.61 | 106.87 | 101.83 | f | 87.97 | 76.40 | 66.57 | a | 82.69 | a | ||||||||||
1914 | 70.10 | b | 74.00 | 82.74 | 88.50 | 94.26 | 103.27 | 107.97 | ----- | z | ----- | z | ----- | z | ----- | z | 62.67 | a | 85.44 | d | ||||||
1915 | 64.67 | y | 72.43 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 103.38 | w | 100.03 | a | 95.81 | 78.37 | 68.97 | 83.12 | g | ||||
1916 | 62.45 | t | 77.33 | e | 86.57 | h | ----- | z | ----- | z | 106.48 | a | 106.70 | a | ----- | z | 100.41 | a | 87.06 | 75.67 | 61.00 | 87.81 | e | |||
1917 | 60.61 | 75.57 | 82.19 | 84.60 | 88.10 | 108.27 | 108.23 | 100.30 | d | 102.60 | 96.35 | 76.80 | 73.90 | u | 89.42 | a | ||||||||||
1918 | 67.97 | a | 72.36 | 78.81 | ----- | z | 89.00 | a | 108.07 | 112.10 | 103.10 | 102.50 | 94.65 | 84.45 | h | ----- | z | 92.06 | c | |||||||
1919 | ----- | z | ----- | z | 75.87 | a | 89.79 | a | 96.61 | 107.77 | ----- | z | 109.16 | 108.47 | m | 84.97 | a | 75.57 | 70.83 | a | 88.82 | d | ||||
1920 | 67.26 | 73.83 | 77.81 | 84.20 | 97.77 | ----- | z | ----- | z | 107.65 | 99.93 | 88.32 | c | ----- | z | ----- | z | 87.10 | d | |||||||
1921 | 70.19 | d | 79.85 | b | 85.77 | a | 89.30 | 96.74 | 108.50 | 107.45 | 105.65 | 103.50 | 92.77 | 83.27 | 71.45 | 91.20 | ||||||||||
1922 | 65.77 | a | 70.89 | 75.19 | 82.28 | a | 99.10 | 106.70 | 108.42 | 105.45 | 106.70 | 91.19 | 72.47 | 69.97 | 87.84 | |||||||||||
1923 | 73.52 | 74.50 | 77.35 | 84.30 | 99.37 | a | 100.43 | 107.35 | 106.45 | ----- | z | 90.23 | a | 77.17 | 63.71 | 86.76 | a | |||||||||
1924 | 69.17 | a | 80.86 | 77.13 | 85.27 | 99.00 | 110.70 | 111.39 | 110.23 | 107.07 | 93.74 | 82.93 | 69.45 | 91.41 | ||||||||||||
1925 | 67.68 | 80.79 | ----- | z | ----- | z | ----- | z | 106.83 | 109.50 | a | 106.14 | b | 100.38 | a | 83.97 | 73.73 | 69.48 | 88.72 | c | ||||||
1926 | 66.16 | 75.79 | 80.13 | 86.00 | 96.58 | 107.80 | 109.27 | a | 107.52 | 101.93 | 91.52 | 80.53 | 64.03 | 88.94 | ||||||||||||
1927 | 69.81 | 74.64 | 78.35 | 88.40 | 98.90 | 104.93 | 109.58 | 103.13 | p | 104.53 | 96.81 | 84.43 | 73.65 | 89.46 | a | |||||||||||
1928 | 73.97 | 72.93 | 83.03 | 84.37 | 101.23 | 108.00 | 110.87 | a | 107.03 | a | 104.77 | 91.81 | 78.03 | 69.81 | 90.49 | |||||||||||
1929 | 66.79 | b | 73.08 | c | 81.07 | a | 87.70 | 98.29 | 107.14 | b | 108.74 | 108.16 | 103.07 | b | 94.47 | a | 77.50 | 75.03 | 90.09 | |||||||
1930 | 64.81 | 77.64 | 78.94 | 90.77 | 91.13 | 105.55 | a | 108.32 | 107.58 | 101.86 | a | 92.26 | 80.79 | a | 69.77 | 89.12 | ||||||||||
1931 | 70.16 | 71.32 | 83.13 | 90.69 | a | 100.77 | 104.50 | 110.61 | 106.00 | b | 101.29 | b | 93.87 | a | 73.13 | 64.00 | a | 89.12 | ||||||||
1932 | 63.65 | 71.71 | a | 83.63 | a | 94.79 | a | 99.94 | 107.20 | 110.48 | 109.74 | 106.28 | a | 90.10 | 82.65 | d | 63.69 | e | 90.32 | |||||||
1933 | 64.96 | f | 67.50 | d | 82.86 | b | 84.69 | a | 92.47 | a | 105.97 | 112.87 | 110.48 | 104.97 | 97.43 | c | 82.88 | d | 69.55 | b | 91.97 | a | ||||
1934 | 71.71 | c | 77.15 | b | 91.29 | c | 94.92 | d | 101.50 | c | 100.00 | d | 110.89 | c | 106.72 | b | 103.50 | 96.10 | a | 77.71 | b | 66.73 | a | 91.52 | ||
1935 | 65.54 | e | 73.58 | d | 76.77 | e | 89.28 | e | 93.41 | b | 108.57 | 108.69 | b | 105.12 | e | 103.07 | c | 89.23 | e | 71.73 | d | 68.77 | e | 87.81 | ||
1936 | 68.27 | e | 71.81 | c | 82.54 | c | 90.81 | d | 99.14 | c | 105.82 | b | 109.48 | f | 107.50 | e | 101.50 | 90.52 | 78.40 | 68.19 | 87.68 | a | ||||
1937 | 56.30 | a | 71.68 | 78.32 | 88.90 | 96.03 | 103.63 | 108.35 | 107.81 | 104.40 | 94.32 | 80.17 | 71.00 | 88.41 | ||||||||||||
1938 | 70.81 | 70.18 | 76.70 | a | 89.70 | 97.19 | 105.43 | 108.52 | 107.42 | 105.33 | 91.61 | 74.77 | 70.97 | 89.05 | ||||||||||||
1939 | 67.81 | 66.36 | 83.32 | 94.37 | 98.71 | 105.93 | 110.30 | a | 108.58 | 96.77 | 89.90 | 81.40 | 74.55 | 89.83 | ||||||||||||
1940 | 72.71 | 74.55 | 85.77 | 90.67 | 102.16 | 108.80 | 111.71 | 109.39 | 102.60 | 94.23 | 76.40 | 71.26 | 91.69 | |||||||||||||
1941 | 66.84 | 73.75 | 77.26 | 82.17 | 99.42 | 104.30 | 110.90 | 105.90 | 101.03 | 88.35 | 81.37 | 69.00 | 88.36 | |||||||||||||
1942 | 71.27 | a | ----- | z | 80.55 | 86.31 | a | 97.17 | b | 106.80 | 113.48 | 107.60 | a | 105.50 | 94.19 | 84.33 | 73.19 | 92.76 | a | |||||||
1943 | 70.55 | 79.21 | 85.39 | 94.93 | ----- | z | 104.50 | 113.03 | a | 106.29 | 106.83 | ----- | z | ----- | z | ----- | z | 95.09 | d | |||||||
1944 | ----- | z | ----- | z | 83.78 | v | 87.50 | 98.52 | 101.60 | 109.68 | 111.52 | 108.73 | 102.65 | 72.66 | a | 71.00 | 95.98 | c | ||||||||
1945 | 64.72 | m | 73.96 | 75.71 | 89.73 | 98.21 | b | 105.67 | 112.19 | 108.48 | 105.79 | a | 93.74 | 78.47 | 67.52 | 91.77 | a | |||||||||
1946 | 71.83 | b | 80.32 | ----- | z | ----- | z | ----- | z | ----- | z | 112.89 | d | ----- | z | 104.34 | a | 87.36 | f | 75.10 | a | 73.10 | 86.26 | f | ||
1947 | 68.48 | 81.75 | 85.23 | 92.97 | 102.47 | n | 105.70 | 113.74 | 108.45 | b | 105.71 | m | 93.31 | b | 74.47 | ----- | z | 91.57 | c | |||||||
1948 | 69.85 | r | 73.28 | 77.58 | e | 93.10 | a | 101.93 | b | 106.66 | a | 111.03 | ----- | z | ----- | z | ----- | z | 76.73 | 69.17 | a | 88.68 | d | |||
1949 | 56.46 | r | 69.04 | 78.00 | 91.95 | h | 94.45 | 104.77 | 108.06 | 108.26 | 105.37 | 87.87 | 83.93 | 68.26 | 90.80 | b | ||||||||||
1950 | 65.81 | 78.71 | 83.10 | a | 92.20 | 93.78 | d | 103.60 | 104.86 | c | 110.72 | b | 101.63 | 99.90 | a | 82.13 | 75.58 | 91.00 | ||||||||
1951 | 72.84 | 73.96 | 80.97 | 87.57 | 96.84 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 82.44 | g | |||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 68.43 | 74.12 | 80.67 | 88.35 | 97.03 | 106.14 | 109.83 | 107.50 | 103.38 | 92.12 | 78.17 | 69.43 | 89.88 | |||||||||||||
S.D. | 4.19 | 4.16 | 4.32 | 4.36 | 3.69 | 2.64 | 2.21 | 2.43 | 2.54 | 3.88 | 3.74 | 3.69 | 1.34 | |||||||||||||
SKEW | -0.97 | -0.20 | -0.18 | -0.67 | -0.57 | -0.35 | -0.11 | -0.08 | -0.16 | 0.27 | 0.01 | -0.38 | -0.08 | |||||||||||||
MAX | 76.23 | 81.75 | 91.29 | 94.93 | 104.19 | 111.20 | 113.74 | 114.39 | 108.73 | 102.65 | 84.43 | 75.58 | 91.69 | |||||||||||||
MIN | 56.30 | 64.46 | 69.29 | 75.37 | 88.10 | 100.00 | 104.86 | 100.30 | 96.77 | 83.97 | 71.69 | 61.00 | 87.81 | |||||||||||||
YRS | 36 | 42 | 40 | 37 | 38 | 39 | 38 | 38 | 38 | 40 | 40 | 37 | 18 |