{"YEAR":1904,"DEPTH":0.1} {"YEAR":1905,"DEPTH":2.86} {"YEAR":1906,"DEPTH":2.6} {"YEAR":1907,"DEPTH":4.6} {"YEAR":1908,"DEPTH":4.4} {"YEAR":1909,"DEPTH":2.76} {"YEAR":1910,"DEPTH":3.07} {"YEAR":1911,"DEPTH":3.92} {"YEAR":1912,"DEPTH":3.34} {"YEAR":1913,"DEPTH":3.1} {"YEAR":1914,"DEPTH":5.4} {"YEAR":1915,"DEPTH":4.68} {"YEAR":1916,"DEPTH":4.72} {"YEAR":1917,"DEPTH":2.76} {"YEAR":1918,"DEPTH":4.4} {"YEAR":1919,"DEPTH":3.03} {"YEAR":1920,"DEPTH":6.06} {"YEAR":1921,"DEPTH":6.52} {"YEAR":1922,"DEPTH":2.15} {"YEAR":1923,"DEPTH":8.56} {"YEAR":1924,"DEPTH":3.55} {"YEAR":1925,"DEPTH":4.54} {"YEAR":1926,"DEPTH":5.72} {"YEAR":1927,"DEPTH":2.23} {"YEAR":1928,"DEPTH":4.93} {"YEAR":1929,"DEPTH":3.12} {"YEAR":1930,"DEPTH":2.75} {"YEAR":1931,"DEPTH":2.8} {"YEAR":1932,"DEPTH":2.93} {"YEAR":1933,"DEPTH":4.35} {"YEAR":1934,"DEPTH":3.67} {"YEAR":1935,"DEPTH":6.5} {"YEAR":1936,"DEPTH":4.06} {"YEAR":1937,"DEPTH":6.67} {"YEAR":1938,"DEPTH":4.03} {"YEAR":1939,"DEPTH":3.79} {"YEAR":1940,"DEPTH":2.96} {"YEAR":1941,"DEPTH":4.89} {"YEAR":1942,"DEPTH":3.45} {"YEAR":1943,"DEPTH":2.25} {"YEAR":1944,"DEPTH":6} {"YEAR":1945,"DEPTH":2.67} {"YEAR":1946,"DEPTH":3.27} {"YEAR":1947,"DEPTH":4.42} {"YEAR":1948,"DEPTH":2.45} {"YEAR":1949,"DEPTH":3.79} {"YEAR":1950,"DEPTH":4.77} {"YEAR":1951,"DEPTH":11.03} {"YEAR":1952,"DEPTH":2.23} {"YEAR":1953,"DEPTH":2.97} {"YEAR":1954,"DEPTH":3.14} {"YEAR":1955,"DEPTH":3.58} {"YEAR":1956,"DEPTH":4.29} {"YEAR":1957,"DEPTH":4.48} {"YEAR":1958,"DEPTH":4.31} {"YEAR":1959,"DEPTH":4.77} {"YEAR":1960,"DEPTH":6.8} {"YEAR":1961,"DEPTH":3.86} {"YEAR":1962,"DEPTH":4.39} {"YEAR":1963,"DEPTH":4.67} {"YEAR":1964,"DEPTH":4.25} {"YEAR":1965,"DEPTH":3.94} {"YEAR":1966,"DEPTH":2.84} {"YEAR":1967,"DEPTH":1.3} {"YEAR":1968,"DEPTH":2.91} {"YEAR":1969,"DEPTH":3.42} {"YEAR":1970,"DEPTH":2.66} {"YEAR":1971,"DEPTH":2.74} {"YEAR":1972,"DEPTH":2.07} {"YEAR":1973,"DEPTH":3.91} {"YEAR":1974,"DEPTH":5.87} {"YEAR":1975,"DEPTH":4.3} {"YEAR":1976,"DEPTH":2.6} {"YEAR":1977,"DEPTH":4.39} {"YEAR":1978,"DEPTH":4.25} {"YEAR":1979,"DEPTH":5.2} {"YEAR":1980,"DEPTH":2.25} {"YEAR":1981,"DEPTH":3.69} {"YEAR":1982,"DEPTH":10.8} {"YEAR":1983,"DEPTH":1.6} {"YEAR":1984,"DEPTH":4.32} {"YEAR":1985,"DEPTH":4.7} {"YEAR":1986,"DEPTH":2.52} {"YEAR":1987,"DEPTH":4.5} {"YEAR":1988,"DEPTH":2.6} {"YEAR":1989,"DEPTH":3.91} {"YEAR":1990,"DEPTH":2.89} {"YEAR":1991,"DEPTH":3.68} {"YEAR":1992,"DEPTH":2.83} {"YEAR":1993,"DEPTH":3.35} {"YEAR":1994,"DEPTH":3.84}