. "accepted" . "Concentration standard deviation of methane {CH4} per unit volume of experiment water sample [dissolved plus reactive particulate phase] by gas chromatography"@en . "04-AUG-14" . "SD_CH4GC_bioassay" . "CH4CEXSD" . "1" . "CH4CEXSD" . "The standard deviation of multiple determinations of the mass or quantity of matter (i.e. moles) of methane dissolved in a unit volume of any experiment water sample." . . "1" . "CH4CEXSD" .