Sample Interval is 01/01 12/31
 Acceptable missing, in percent =  10.0
 Year          Avg
 1909.00    55.06027
 1910.00   -99.00000
 1911.00   -99.00000
 1912.00   -99.00000
 1913.00    53.74105
 1914.00   -99.00000
 1915.00   -99.00000
 1916.00   -99.00000
 1917.00   -99.00000
 1918.00   -99.00000
 1919.00   -99.00000
 1920.00   -99.00000
 1921.00   -99.00000
 1922.00   -99.00000
 1923.00   -99.00000
 1924.00   -99.00000
 1925.00   -99.00000
 1926.00   -99.00000
 1927.00   -99.00000
 1928.00    53.95000
 1929.00    53.73938
 1930.00   -99.00000
 1931.00    57.81322
 1932.00    56.78962
 1933.00   -99.00000
 1934.00   -99.00000
 1935.00    57.77411
 1936.00    59.22089
 1937.00    57.01099
 1938.00    56.41370
 1939.00    56.28144
 1940.00    57.92350
 1941.00    57.71781
 1942.00   -99.00000
 1943.00    57.88764
 1944.00    54.70765
 1945.00    56.83014
 1946.00    57.67671
 1947.00    58.17978
 1948.00    56.19126
 1949.00    57.27671
 1950.00    58.42033
 1951.00    57.82143
 1952.00    58.19399
 1953.00    56.13425
 1954.00    58.20822
 1955.00    57.14795
 1956.00    55.68219
 1957.00    59.03380
 1958.00    56.77534
 1959.00    55.75343
 1960.00    55.42350
 1961.00    54.99178
 1962.00    55.04657
 1963.00    55.36438
 1964.00    53.96721
 1965.00    54.34795
 1966.00    55.43835
 1967.00    55.77260
 1968.00    54.43989
 1969.00    56.35891
 1970.00    54.85479
 1971.00    53.74520
 1972.00    54.79235
 1973.00    54.13425
 1974.00    55.10411
 1975.00    53.30411
 1976.00    53.84973
 1977.00    55.29863
 1978.00    56.83562
 1979.00    55.23561
 1980.00    55.74590
 1981.00    57.46575
 1982.00    55.13151
 1983.00    57.33699
 1984.00    55.00597
 1985.00    55.68493
 1986.00    56.18356
 1987.00    55.62192
 1988.00    55.87159
 1989.00    56.01370
 1990.00    55.50137
 1991.00    55.83836
 1992.00    57.35246
 1993.00    56.63562
 1994.00    56.34246
 1995.00    57.37534
 1996.00    58.35246