even fresh water, was to follow the terms of this

1884 0.044631 22.406089 0.0000% 1903 0.036683 27.260425 1.3740% 1902 1.000000 1.000000 0.0000% 1928 1.536860 0.650677 2.8137% 1921 1.918901 0.521132 -2.7367% 1929 2.085718 0.479451 0.0000% 1922 1.848065 0.541106 0.0000% 1922 1.000000 1.000000 2.9715% 1984 3.077181 0.324973 3.6576% 1983 0.376338 2.657185 3.8998% 1982 3.984117 0.250997 6.3831% 1981 11.749646 0.085109 9.6843% 1980 2.819071 0.354727 9.0330% 1979 9.034759 0.110684 8.8650% 1978 1.144217 0.873960 7.2813% 1977 2.045578 0.488859 6.6558% 1976 5.487120 0.182245 6.4073% 1975 0.251278 3.979664 9.8159% 1974 3.673478 0.272222 9.0909% 1973 3.897652 0.256565 6.4509% 1972 5.670785 0.176342 4.7304% 1971 1.268581 0.788283 5.7132% 1970 3.333260 0.300007 5.5272% 1969 5.378369 0.185930 5.5714% 1968 5.026408 0.198949 5.0148% 1967 0.243550 4.105935 2.5719% 1966 2.671684 0.374296 3.5485% 1965 2.600035 0.384610 2.7360% 1964 4.012231 0.249238 1.5423% 1963 1.231961 0.811714 1.5697% 1962 2.170058 0.460817 2.2421%

flummox