YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1917 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.02 | 0.09 | ----- | z | ----- | z | ----- | z | ----- | z | ||
1918 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.23 | 0.55 | ----- | z | ----- | z | ----- | z | ----- | z | ||
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | ----- | z | 0.60 | 0.90 | ----- | z | ----- | z | ----- | z | ----- | z | |||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 | 0.70 | 0.12 | 0.34 | ----- | z | |||
1950 | 0.64 | 0.27 | a | 0.27 | 1.33 | 1.09 | 0.49 | c | 0.24 | 0.20 | 0.50 | 0.44 | 0.93 | 0.29 | 1.33 | d | ||||||||||
1951 | 0.29 | c | 2.20 | a | ----- | z | ----- | z | ----- | z | 0.64 | 0.48 | 0.77 | 0.23 | 0.85 | 0.27 | 0.82 | ----- | z | |||||||
1952 | 0.31 | 0.23 | 0.28 | 0.34 | 0.73 | 0.41 | 0.92 | 0.32 | 0.20 | 0.06 | 0.30 | 0.17 | 0.92 | |||||||||||||
1953 | 0.25 | 0.46 | e | ----- | z | ----- | z | ----- | z | 0.50 | ----- | z | ----- | z | ----- | z | 0.20 | 0.53 | 0.40 | ----- | z | |||||
1954 | 0.30 | 0.29 | 0.73 | 0.23 | 0.73 | 0.40 | 0.61 | 0.31 | 0.51 | 0.25 | 0.32 | 0.55 | 0.73 | |||||||||||||
1955 | 0.20 | 0.24 | 0.39 | 1.76 | 0.26 | 0.29 | 0.55 | 0.39 | 0.19 | 0.36 | 0.80 | 0.29 | 1.76 | |||||||||||||
1956 | 0.46 | 0.54 | 0.24 | 0.37 | 0.30 | 0.14 | 1.17 | 0.66 | 0.00 | 0.18 | 0.72 | 0.52 | 1.17 | |||||||||||||
1957 | 0.48 | 0.82 | 0.38 | 0.40 | 0.32 | a | 1.05 | 0.44 | 0.80 | 0.38 | 0.35 | 0.18 | 0.29 | 1.05 | a | |||||||||||
1958 | 0.20 | 0.42 | 0.37 | 0.65 | 0.55 | 0.48 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.35 | 0.61 | 0.38 | 0.73 | 0.57 | 0.44 | 0.63 | 0.43 | 0.36 | 0.38 | 0.46 | 0.41 | 1.16 | |||||||||||||
S.D. | 0.15 | 0.63 | 0.17 | 0.59 | 0.30 | 0.28 | 0.31 | 0.26 | 0.27 | 0.25 | 0.29 | 0.20 | 0.36 | |||||||||||||
SKEW | 0.85 | 2.09 | 1.50 | 0.95 | 0.55 | 0.61 | 0.65 | 0.10 | 0.63 | 0.75 | 0.42 | 0.99 | 0.60 | |||||||||||||
MAX | 0.64 | 2.20 | 0.73 | 1.76 | 1.09 | 1.05 | 1.17 | 0.80 | 0.90 | 0.85 | 0.93 | 0.82 | 1.76 | |||||||||||||
MIN | 0.20 | 0.23 | 0.24 | 0.23 | 0.26 | 0.00 | 0.24 | 0.02 | 0.00 | 0.06 | 0.12 | 0.17 | 0.73 | |||||||||||||
YRS | 9 | 9 | 7 | 7 | 7 | 10 | 7 | 10 | 10 | 9 | 9 | 9 | 6 |