YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1914 | ----- | z | ----- | z | ----- | z | 66.05 | h | 71.57 | a | 68.03 | 76.03 | 76.74 | 60.60 | 60.52 | 47.63 | 37.47 | a | 62.32 | d | ||||||
1915 | 41.42 | 47.50 | 57.55 | 63.33 | 65.42 | 68.80 | 73.19 | 78.87 | 67.90 | a | 55.46 | c | 42.27 | 39.29 | 58.42 | |||||||||||
1916 | 28.20 | a | 41.38 | 44.94 | 57.10 | 60.16 | 69.53 | 68.87 | 75.94 | 68.47 | 58.81 | 42.69 | a | 34.26 | 54.19 | |||||||||||
1917 | 35.42 | 38.25 | 42.90 | 52.27 | 60.77 | a | 65.03 | 76.45 | 79.84 | 67.90 | 59.32 | 53.92 | d | 38.32 | 55.87 | |||||||||||
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 60.86 | q | 50.17 | x | 42.55 | t | ----- | z |
1919 | 43.22 | d | 43.42 | d | 48.69 | b | 59.96 | e | 67.50 | c | 71.33 | o | 78.00 | i | 78.58 | g | 75.10 | t | 56.32 | i | 45.86 | h | 37.34 | b | 50.02 | f |
1920 | 43.26 | h | 46.71 | a | 49.43 | c | 53.22 | c | 60.12 | g | 69.26 | k | 78.00 | b | 78.08 | g | 61.94 | m | ----- | z | 48.48 | c | 41.93 | d | 52.96 | f |
1921 | 36.48 | f | 39.67 | m | 47.19 | 52.23 | 64.00 | h | 68.43 | i | 65.80 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 49.71 | j | ||
1922 | 30.68 | i | 33.60 | c | 38.79 | b | 49.67 | c | 58.00 | o | ----- | z | 94.50 | y | 75.12 | e | 63.13 | o | 50.06 | o | 38.52 | i | 29.24 | j | 49.29 | h |
1923 | 33.00 | f | 34.39 | j | 42.11 | l | 51.27 | d | 57.95 | k | 61.94 | n | ----- | z | ----- | z | 61.00 | s | 46.75 | s | 45.35 | j | ----- | z | 51.27 | k |
1924 | 32.61 | m | 43.04 | b | 46.04 | g | 54.81 | n | 65.36 | i | 64.08 | f | 76.82 | t | ----- | z | ----- | z | ----- | z | 37.93 | c | 34.12 | g | 40.48 | j |
1925 | 35.50 | c | 42.25 | p | 41.65 | k | ----- | z | 73.08 | f | 72.11 | k | ----- | z | ----- | z | 70.17 | l | ----- | z | ----- | z | ----- | z | 35.50 | k |
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 | 49.67 | 41.12 | g | 49.67 | k | |
1935 | 34.93 | c | 48.71 | 44.83 | a | 57.83 | 66.60 | a | 69.46 | b | 73.17 | b | 73.71 | 72.10 | 56.00 | c | 43.47 | 43.03 | a | 56.99 | ||||||
1936 | 39.90 | 33.15 | c | 45.07 | a | 59.47 | 68.14 | c | 72.11 | c | 74.81 | 76.00 | 67.47 | 60.13 | 47.86 | a | 41.65 | 57.15 | ||||||||
1937 | 29.00 | c | 38.00 | 52.94 | 51.47 | 65.52 | b | 71.23 | 75.55 | b | 71.32 | 68.40 | 62.93 | a | 46.10 | a | 42.00 | a | 56.21 | |||||||
1938 | 41.86 | b | 47.61 | 49.80 | a | 61.53 | 67.42 | 74.36 | b | 81.10 | a | 74.77 | a | 74.34 | a | 64.60 | f | 44.00 | b | 40.79 | b | 59.78 | a | |||
1939 | 42.76 | b | 40.10 | g | 51.14 | b | 62.12 | f | 64.85 | e | 65.28 | e | 75.06 | 80.30 | a | 71.25 | b | 58.66 | b | 54.56 | c | 47.57 | a | 61.14 | b | |
1940 | 43.03 | 45.52 | b | 53.23 | 63.12 | d | 72.94 | 78.93 | 82.00 | o | 78.32 | 75.08 | d | 60.77 | 45.13 | 43.13 | 59.93 | a | ||||||||
1941 | 44.45 | 52.39 | 62.13 | 63.97 | 64.42 | 73.13 | o | 84.00 | k | ----- | z | ----- | z | 77.12 | w | ----- | z | ----- | z | 57.47 | g | |||||
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 84.30 | a | 77.10 | a | 62.39 | c | 44.76 | a | 38.58 | 61.43 | g | |
1943 | 31.84 | 48.89 | a | 48.39 | 61.80 | 61.87 | 67.63 | 74.04 | e | 71.42 | 71.60 | 62.00 | v | ----- | z | 37.19 | e | 57.47 | b | |||||||
1944 | 39.79 | b | 42.04 | b | 47.48 | 58.90 | 63.76 | b | 68.52 | e | 76.65 | e | 71.16 | 69.57 | 61.48 | 47.04 | c | 38.52 | f | 58.76 | a | |||||
1945 | 40.21 | c | 44.00 | 49.33 | d | 53.04 | c | 65.79 | b | 68.11 | b | 78.35 | h | 79.00 | i | ----- | z | ----- | z | ----- | z | ----- | z | 53.41 | f | |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 54.32 | i | 41.42 | k | ----- | z | ----- | z |
1947 | ----- | z | 48.08 | p | 56.81 | j | 64.29 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 52.75 | g | ----- | z | 40.59 | n | ----- | z |
1948 | 38.55 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | 58.12 | v | 72.29 | q | 71.96 | g | 75.12 | g | 68.96 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | 22.27 | a | 39.21 | 44.41 | b | 54.70 | 62.27 | a | 74.16 | e | 76.80 | a | 76.58 | 71.38 | f | 52.50 | o | 44.65 | j | 43.53 | l | 56.30 | d | |||
1951 | 34.89 | d | 41.13 | e | 44.97 | 65.90 | 65.57 | a | 73.08 | e | 79.55 | 77.26 | 73.14 | b | 54.00 | q | 43.81 | n | 36.33 | j | 61.72 | c | ||||
1952 | 34.00 | e | 42.60 | i | 48.11 | l | 63.04 | d | 68.27 | a | 68.27 | h | 77.16 | 76.67 | a | ----- | z | 60.79 | g | 47.00 | s | 42.22 | m | 63.83 | g | |
1953 | 42.25 | g | 43.86 | 49.39 | 56.79 | a | 64.40 | a | 60.03 | a | 74.21 | c | 71.94 | 65.15 | d | 56.60 | f | 48.96 | e | 41.10 | a | 57.58 | b | |||
1954 | 32.30 | a | 41.93 | a | 48.52 | 52.53 | 66.14 | c | 65.43 | 72.29 | 67.42 | 65.07 | 55.10 | 49.32 | b | 41.10 | 54.76 | |||||||||
1955 | 38.03 | 39.00 | 40.68 | 53.10 | 57.68 | 67.60 | 69.63 | a | 73.50 | a | 65.68 | b | ----- | z | 39.33 | l | 36.11 | c | 54.10 | b | ||||||
1956 | 36.43 | a | 36.55 | 44.23 | 61.97 | 74.33 | g | 66.29 | i | 78.87 | a | 76.54 | c | 68.36 | h | 51.25 | k | 44.55 | j | 36.17 | s | 55.76 | f | |||
1957 | ----- | z | 41.56 | l | 48.29 | 59.33 | 68.77 | a | 71.93 | o | 69.93 | b | 71.16 | 74.75 | b | 55.86 | b | 46.33 | 41.45 | 59.54 | c | |||||
1958 | 43.52 | 48.19 | a | 51.58 | 59.07 | c | 74.45 | 79.36 | b | 88.85 | d | 81.77 | 65.03 | 58.68 | 41.46 | b | 44.24 | f | 62.91 | a | ||||||
1959 | 39.00 | 41.80 | c | 47.90 | a | 58.27 | 66.07 | b | 69.86 | a | 79.65 | 73.43 | a | 63.66 | a | 54.48 | d | 43.70 | c | 40.07 | d | 56.49 | ||||
1960 | 34.60 | a | 42.33 | b | 50.58 | 58.50 | b | 60.37 | d | 68.17 | 83.10 | 72.43 | a | 69.24 | a | 58.30 | d | 43.48 | a | 38.59 | b | 56.64 | ||||
1961 | 52.87 | h | 44.95 | f | 51.39 | ----- | z | 65.92 | f | 77.60 | 82.10 | 84.77 | a | 66.82 | b | 55.23 | 41.00 | 37.13 | a | 62.00 | d | |||||
1962 | 38.45 | b | 44.46 | b | 47.36 | c | 59.23 | 58.33 | d | 71.57 | 75.52 | 72.03 | 69.93 | 56.80 | a | 48.25 | b | 42.58 | 57.04 | |||||||
1963 | 34.55 | 46.38 | b | 49.04 | c | 54.20 | 67.86 | b | 68.69 | a | 73.16 | 77.52 | d | ----- | z | ----- | z | ----- | z | ----- | z | 58.93 | d | |||
1964 | ----- | z | ----- | z | 51.57 | x | ----- | z | ----- | z | 67.73 | 72.65 | 70.03 | a | 66.32 | e | ----- | z | ----- | z | ----- | z | 69.18 | h | ||
1965 | ----- | z | ----- | z | 52.77 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 68.37 | c | 61.25 | k | 48.42 | k | ----- | z | 60.57 | j | |
1966 | ----- | z | ----- | z | 50.23 | 58.58 | d | 70.00 | c | 67.67 | 71.80 | a | 76.55 | 71.00 | 57.48 | 47.33 | 41.16 | 61.18 | b | |||||||
1967 | 39.35 | 45.89 | 45.81 | 55.00 | 65.00 | 76.43 | 78.10 | 86.70 | a | 77.37 | 57.58 | e | 50.46 | f | 37.84 | l | 62.72 | b | ||||||||
1968 | 38.87 | h | 50.83 | 53.04 | c | 55.77 | 64.66 | b | 69.07 | 78.71 | 72.71 | 69.21 | b | ----- | z | ----- | z | ----- | z | 64.25 | d | |||||
1969 | 27.65 | 42.29 | 52.71 | c | ----- | z | 75.95 | i | 75.96 | c | 75.17 | b | 73.16 | 67.18 | b | 58.43 | a | 48.70 | g | 40.61 | c | 57.02 | c | |||
1970 | 34.68 | f | 50.00 | c | 51.77 | 52.63 | 63.93 | a | 76.11 | b | 77.23 | 78.42 | 66.50 | b | 57.97 | 45.80 | 37.75 | k | 62.04 | b | ||||||
1971 | 34.52 | f | 41.42 | b | 46.39 | c | 58.90 | 67.41 | b | 63.76 | a | 78.39 | 79.90 | 64.83 | a | 55.80 | f | 47.13 | 37.03 | 58.52 | b | |||||
1972 | 36.42 | 43.92 | d | 49.55 | 51.59 | c | 67.28 | m | 67.69 | a | 76.07 | a | 79.14 | b | 65.95 | h | 65.92 | s | 45.87 | g | 34.29 | 54.83 | d | |||
1973 | 38.06 | 46.00 | 49.84 | ----- | z | ----- | z | 67.40 | 74.91 | h | 72.71 | 69.45 | a | 52.58 | 39.37 | 40.29 | 52.86 | c | ||||||||
1974 | 35.57 | a | 42.52 | a | 47.48 | 54.93 | c | 60.52 | b | 70.78 | g | 77.67 | p | 78.87 | ----- | z | ----- | z | ----- | z | ----- | z | 53.31 | f | ||
1975 | 36.21 | g | 38.07 | 46.23 | a | 53.15 | q | ----- | z | 65.07 | p | 76.83 | a | 68.16 | 73.21 | a | 52.97 | 43.79 | a | 37.48 | b | 54.59 | d | |||
1976 | 38.47 | a | 40.86 | 44.16 | 55.93 | 61.74 | 63.83 | 70.90 | a | 65.16 | 68.59 | a | 58.58 | 49.17 | 41.10 | 54.87 | ||||||||||
1977 | 36.52 | 49.04 | 45.87 | 61.76 | e | 57.27 | a | 69.83 | 71.36 | c | 78.83 | a | 64.07 | a | 55.19 | 42.20 | 35.06 | 55.58 | ||||||||
1978 | 36.17 | a | 44.15 | a | 52.23 | 57.93 | 60.65 | 71.33 | 75.23 | a | 72.65 | 62.47 | ----- | z | ----- | z | 41.77 | r | 59.20 | c | ||||||
1979 | ----- | z | 42.38 | o | 56.08 | f | 56.16 | e | 63.15 | k | 68.76 | a | 76.59 | d | 76.68 | 66.83 | g | 63.81 | o | 44.18 | h | 43.80 | p | 69.55 | h | |
1980 | 34.92 | g | 44.90 | h | 45.15 | d | 61.26 | k | 61.05 | i | 64.88 | n | ----- | z | ----- | z | ----- | z | 62.44 | f | 50.77 | h | 43.30 | h | 45.15 | k |
1981 | 46.04 | h | 45.60 | c | 54.21 | b | 55.72 | e | 63.00 | c | 62.69 | a | 72.44 | f | 79.48 | d | 68.33 | 55.67 | a | 50.87 | 42.45 | 57.80 | b | |||
1982 | 33.35 | 42.32 | 48.55 | 56.33 | 64.00 | 73.57 | 70.03 | 71.13 | 67.90 | 59.74 | 40.37 | 40.10 | a | 55.62 | ||||||||||||
1983 | 43.88 | g | 48.21 | d | 54.00 | g | 57.00 | k | 72.05 | l | 63.83 | f | 70.62 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 59.41 | j |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 36.60 | 43.58 | 48.68 | 57.16 | 64.87 | 69.86 | 75.69 | 75.58 | 68.82 | 57.75 | 45.75 | 39.70 | 56.14 | |||||||||||||
S.D. | 4.95 | 4.40 | 4.15 | 4.02 | 3.97 | 4.47 | 4.04 | 4.54 | 3.91 | 2.67 | 3.93 | 2.91 | 1.16 | |||||||||||||
SKEW | -0.72 | -0.29 | 0.48 | 0.15 | 0.20 | 0.29 | 0.74 | 0.17 | 0.33 | -0.00 | 0.19 | 0.14 | 0.11 | |||||||||||||
MAX | 44.45 | 52.39 | 62.13 | 65.90 | 74.45 | 79.36 | 88.85 | 86.70 | 77.37 | 62.93 | 54.56 | 47.57 | 58.42 | |||||||||||||
MIN | 22.27 | 33.15 | 38.79 | 49.67 | 57.27 | 60.03 | 68.87 | 65.16 | 60.60 | 52.58 | 37.93 | 34.26 | 54.19 | |||||||||||||
YRS | 35 | 42 | 47 | 43 | 38 | 39 | 41 | 45 | 38 | 28 | 32 | 32 | 13 |