YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.07 | a | 48.27 | 42.35 | 23.77 | 19.77 | 38.45 | g | ||||
1919 | 16.70 | a | 18.07 | 27.17 | a | 36.50 | b | ----- | z | 50.50 | 59.61 | 58.77 | a | ----- | z | ----- | z | ----- | z | ----- | z | 38.19 | e | |||
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 | 35.10 | 46.29 | 55.37 | 61.45 | 57.03 | 53.36 | b | 43.60 | a | 27.30 | 25.73 | a | 45.03 | c | ||||||
1941 | 22.87 | a | 26.18 | 26.26 | 34.17 | 46.97 | a | 51.87 | 55.25 | c | 56.93 | b | 48.34 | a | 39.50 | a | 27.84 | k | ----- | z | 40.83 | b | ||||
1942 | ----- | z | 16.18 | 23.13 | 36.19 | d | 43.34 | b | 51.79 | a | 56.97 | 54.16 | 47.10 | a | 39.21 | b | 31.77 | 24.35 | 38.56 | a | ||||||
1943 | 22.87 | 26.12 | d | 24.16 | 41.14 | b | 41.47 | a | 54.96 | c | 59.00 | 59.73 | a | 49.37 | 40.64 | f | 30.83 | 23.61 | 39.39 | a | ||||||
1944 | 22.77 | 23.97 | 23.10 | a | 31.37 | 44.50 | a | 54.07 | 58.06 | 58.90 | 50.63 | 42.35 | 27.34 | a | 22.06 | 38.26 | ||||||||||
1945 | 18.92 | s | ----- | z | ----- | z | 30.60 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.60 | k | |
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | 49.50 | o | 49.47 | 61.13 | 59.61 | 49.33 | 39.94 | 27.60 | 22.13 | 44.17 | e | |||||||
1952 | 26.19 | 23.41 | 22.77 | 35.63 | 45.32 | 60.17 | 58.35 | 58.90 | 52.20 | 39.52 | 21.93 | 20.29 | 38.73 | |||||||||||||
1953 | 25.29 | 20.57 | 29.90 | 30.77 | 41.70 | a | 60.83 | 61.97 | 57.87 | 53.60 | 43.61 | 33.40 | 20.42 | 39.99 | ||||||||||||
1954 | 25.61 | 29.68 | 25.27 | a | 40.93 | 43.45 | 56.07 | 62.84 | 58.32 | 55.03 | 43.61 | 31.97 | 23.15 | d | 41.33 | |||||||||||
1955 | 21.19 | 20.07 | 27.90 | 38.33 | f | 44.68 | 48.47 | 57.52 | b | 57.80 | p | 50.64 | b | 39.80 | a | 23.54 | b | 27.13 | 36.09 | b | ||||||
1956 | 24.74 | 17.24 | 24.57 | a | 31.00 | 46.42 | 55.90 | 57.68 | 56.53 | l | 52.77 | 43.04 | h | 20.73 | o | 24.77 | 37.23 | c | ||||||||
1957 | 18.87 | a | 29.61 | ----- | z | 31.10 | 40.55 | 50.30 | 59.10 | 57.77 | ----- | z | ----- | z | ----- | z | 26.68 | 39.25 | d | |||||||
1958 | 21.35 | 26.25 | 21.29 | 31.67 | 49.32 | 56.12 | v | 57.32 | 59.48 | 50.60 | 40.61 | 29.57 | 25.14 | b | 37.51 | a | ||||||||||
1959 | 18.42 | 22.93 | 23.94 | 34.07 | 44.87 | 54.90 | a | 55.21 | b | 59.23 | 47.48 | i | 37.60 | a | 24.80 | 24.32 | 36.39 | a | ||||||||
1960 | 17.03 | 11.66 | 25.16 | 37.60 | 43.26 | 54.67 | 58.39 | 58.37 | a | 52.70 | 40.77 | 29.77 | 20.89 | c | 37.52 | |||||||||||
1961 | 20.52 | 23.00 | 27.00 | 32.67 | 44.58 | 53.80 | 57.67 | d | 57.81 | 46.00 | b | 39.07 | a | 25.55 | a | 19.77 | 37.29 | |||||||||
1962 | 13.35 | 27.29 | 25.00 | 38.23 | 50.94 | n | 52.50 | 58.03 | 60.77 | 52.13 | 43.87 | 33.30 | 25.81 | 39.12 | a | |||||||||||
1963 | 11.48 | 25.29 | 29.87 | 40.47 | 49.55 | 56.93 | 63.65 | 59.29 | 54.40 | ----- | z | 33.20 | 20.45 | 40.42 | a | |||||||||||
1964 | ----- | z | 13.66 | 21.57 | a | ----- | z | ----- | z | 53.70 | 62.94 | ----- | z | 51.10 | 42.35 | 29.80 | 24.52 | 37.45 | d | |||||||
1965 | 24.03 | 18.82 | 17.19 | 37.14 | a | 45.06 | 51.63 | 57.71 | 56.29 | 46.90 | 41.74 | 36.23 | 27.13 | 38.32 | ||||||||||||
1966 | 16.55 | 19.00 | 30.06 | 33.80 | 44.00 | 54.59 | a | 62.26 | 56.70 | a | 50.32 | b | 38.35 | 32.41 | c | 21.32 | 38.28 | |||||||||
1967 | 24.52 | 21.82 | 31.74 | 38.93 | a | 40.90 | 50.47 | 58.77 | 54.00 | 47.77 | 40.65 | 29.07 | 16.63 | a | 37.94 | |||||||||||
1968 | 22.61 | 22.41 | 27.28 | b | 31.53 | 40.52 | 55.11 | b | 57.21 | b | ----- | z | ----- | z | ----- | z | ----- | z | 23.03 | a | 34.96 | d | ||||
1969 | 27.87 | 24.29 | 19.84 | 41.73 | 49.13 | 51.93 | 61.32 | 60.10 | 53.07 | 34.45 | 29.03 | 23.97 | 39.73 | |||||||||||||
1970 | 20.03 | 25.46 | 23.23 | 34.80 | 47.77 | 53.52 | c | 57.16 | 59.77 | 48.20 | 34.68 | 30.17 | 25.77 | 38.38 | ||||||||||||
1971 | 23.31 | b | 19.79 | 26.65 | 35.86 | a | 42.37 | a | 58.00 | a | ----- | z | ----- | z | ----- | z | 36.30 | d | 28.28 | a | 20.97 | b | 32.39 | c | ||
1972 | 20.68 | 23.34 | 29.81 | 35.70 | 43.06 | 55.10 | 59.10 | a | 57.06 | 52.90 | a | 41.87 | 22.72 | a | ----- | z | 40.12 | a | ||||||||
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 43.37 | a | 31.77 | 22.23 | a | 32.46 | i | |
1974 | 17.94 | ----- | z | ----- | z | 36.43 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.18 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 21.07 | 22.16 | 25.35 | 35.38 | 44.55 | 53.95 | 59.10 | 58.12 | 50.70 | 40.38 | 29.00 | 23.04 | 38.71 | |||||||||||||
S.D. | 4.04 | 4.53 | 3.51 | 3.41 | 2.70 | 3.01 | 2.31 | 1.70 | 2.56 | 2.72 | 3.73 | 2.64 | 1.19 | |||||||||||||
SKEW | -0.57 | -0.44 | -0.21 | 0.27 | 0.32 | 0.37 | 0.41 | -0.90 | -0.15 | -0.66 | -0.25 | -0.31 | 0.99 | |||||||||||||
MAX | 27.87 | 29.68 | 31.74 | 41.73 | 49.55 | 60.83 | 63.65 | 60.77 | 55.03 | 43.87 | 36.23 | 27.13 | 41.33 | |||||||||||||
MIN | 11.48 | 11.66 | 17.19 | 30.60 | 40.52 | 48.47 | 55.21 | 54.00 | 46.00 | 34.45 | 21.93 | 16.63 | 37.29 | |||||||||||||
YRS | 25 | 26 | 25 | 27 | 24 | 27 | 27 | 24 | 24 | 24 | 25 | 27 | 11 |