cohort  day  sal    Alk      DIC      pCO2     pH     omega_Arag  Mg_measured  Sr_measured  Ca_measured  Mg_from_sal  Sr_from_sal  Ca_from_sal  
May     0    27.2   2013.4   1797.6   402.5    8      2.4         nd           nd           nd           nd           nd           nd           
May     2    30.1   2115.9   1845.7   360.4    8.1    2.8         46.9         76.9         9            46.6         79.8         9.1          
May     5    29.7   2076     1764     285.5    8.1    3.2         46.6         76.3         8.9          45.9         78.7         8.9          
May     8    24.9   1949.3   1737.3   380.5    8      2.5         39.1         63.8         7.6          38.5         66           7.5          
May     11   25.1   1955.3   1760     418.5    8      2.3         38.4         63.2         7.4          38.8         66.6         7.6          
May     13   23.8   1875.4   1677     349      8.1    2.3         37.6         60.9         7.2          36.8         63.1         7.2          
May     15   25.4   1943     1719.5   353.4    8.1    2.5         40           65.2         7.7          39.3         67.3         7.6          
May     17   26.3   1997.7   1761.6   364.3    8      2.7         40.5         66.8         nd           40.7         69.7         7.9          
Aug     0    33     2304.8   2110.6   684.3    7.8    2.1         55.1         88.6         10.1         51           87.5         9.9          
Aug     1    33     2327.7   2158.9   863.5    7.8    1.9         52.9         84.7         11.1         51           87.5         9.9          
Aug     3    32.9   2315     2166.1   891.1    7.8    1.7         52.1         83.6         10.3         50.9         87.2         9.9          
Aug     5    33.1   2321.3   2212.8   1162.8   7.6    1.4         51.4         82.5         10.6         51.2         87.8         10           
Aug     7    33.2   2359.5   2265.7   1365     7.6    1.3         53.7         86.3         10.9         51.4         88           10           
Aug     9    32.7   2322.7   2225.7   1321     7.6    1.3         51.3         82.5         10.5         50.6         86.7         9.8          
Aug     11   31.1   2283.4   2138.9   909.1    7.7    1.7         48.4         77.4         9.8          48.1         82.5         9.4          
Aug     13   32.6   2316.2   2180.8   971.9    7.7    1.6         46.6         74.6         10.8         50.4*        86.4*        9.8*         
Aug     15   32.8   2346.4   2227.1   1105.7   7.7    1.5         51.4         82.8         11           50.7         87           9.9          
Aug     17   32.8   2302.1   2160.5   922.1    7.7    1.7         51.3         82.7         10.6         50.7         87           9.9          
Aug     19   32.9   2304     2147.1   892.8    7.7    1.8         51.4         82.4         10.4         50.9         87.2         9.9