{"YEAR":1923,"DEPTH":5.5}
{"YEAR":1924,"DEPTH":4.01}
{"YEAR":1925,"DEPTH":3.36}
{"YEAR":1926,"DEPTH":3.64}
{"YEAR":1927,"DEPTH":1.87}
{"YEAR":1928,"DEPTH":4.73}
{"YEAR":1929,"DEPTH":5.16}
{"YEAR":1930,"DEPTH":2.65}
{"YEAR":1931,"DEPTH":2.87}
{"YEAR":1932,"DEPTH":3.79}
{"YEAR":1933,"DEPTH":2.26}
{"YEAR":1934,"DEPTH":2.33}
{"YEAR":1935,"DEPTH":2.39}
{"YEAR":1936,"DEPTH":4.18}
{"YEAR":1937,"DEPTH":4.08}
{"YEAR":1938,"DEPTH":3.91}
{"YEAR":1939,"DEPTH":3.33}
{"YEAR":1940,"DEPTH":3.13}
{"YEAR":1941,"DEPTH":7.03}
{"YEAR":1942,"DEPTH":3.64}
{"YEAR":1943,"DEPTH":3.51}
{"YEAR":1944,"DEPTH":5.21}
{"YEAR":1945,"DEPTH":2.52}
{"YEAR":1946,"DEPTH":6.01}
{"YEAR":1947,"DEPTH":5.75}
{"YEAR":1948,"DEPTH":2.65}
{"YEAR":1949,"DEPTH":3.92}
{"YEAR":1950,"DEPTH":4.54}
{"YEAR":1951,"DEPTH":9.71}
{"YEAR":1952,"DEPTH":2.76}
{"YEAR":1953,"DEPTH":3.91}
{"YEAR":1954,"DEPTH":2.01}
{"YEAR":1955,"DEPTH":1.86}
{"YEAR":1956,"DEPTH":3.24}
{"YEAR":1957,"DEPTH":3.4}
{"YEAR":1958,"DEPTH":3.67}
{"YEAR":1959,"DEPTH":4.19}
{"YEAR":1960,"DEPTH":6.7}
{"YEAR":1961,"DEPTH":4.55}
{"YEAR":1962,"DEPTH":5.52}
{"YEAR":1963,"DEPTH":4.06}
{"YEAR":1964,"DEPTH":2.84}
{"YEAR":1965,"DEPTH":6.21}
{"YEAR":1966,"DEPTH":3.21}
{"YEAR":1967,"DEPTH":3.88}
{"YEAR":1968,"DEPTH":9.5}
{"YEAR":1969,"DEPTH":3.24}
{"YEAR":1970,"DEPTH":1.52}
{"YEAR":1971,"DEPTH":3.01}
{"YEAR":1972,"DEPTH":2.34}
{"YEAR":1973,"DEPTH":2.93}
{"YEAR":1974,"DEPTH":4.16}
{"YEAR":1975,"DEPTH":2.91}
{"YEAR":1976,"DEPTH":1.96}
{"YEAR":1977,"DEPTH":2.51}
{"YEAR":1978,"DEPTH":7.16}
{"YEAR":1979,"DEPTH":2.31}
{"YEAR":1980,"DEPTH":1.53}
{"YEAR":1981,"DEPTH":4.37}
{"YEAR":1982,"DEPTH":3.74}
{"YEAR":1983,"DEPTH":3.17}
{"YEAR":1984,"DEPTH":5.69}
{"YEAR":1985,"DEPTH":4.82}
{"YEAR":1986,"DEPTH":3.52}
{"YEAR":1987,"DEPTH":5.26}
{"YEAR":1988,"DEPTH":4.01}
{"YEAR":1989,"DEPTH":4.57}
{"YEAR":1990,"DEPTH":2.95}
{"YEAR":1991,"DEPTH":2.59}
{"YEAR":1992,"DEPTH":3.27}
{"YEAR":1993,"DEPTH":5.51}
{"YEAR":1994,"DEPTH":3.97}