APEX Autonomous Drifting Profiler, or Argo float, 2010
2010
2010
1960-2007
1927
1997
1870
1997
1942
1930
1905
1918
1902
1896
1930-1950
1870-1900
1870-1900
1818
1933
1773 (original); 1980s
1811 (original)
1990-1992
1990-1992
1990-1992
1990-1992
1970-1977
circa 1960
1960-1970
1970-1977
1954
1975-1977
1986
circa 1950