. . . . . . . . . . . . . . . . . . . . "Concentration standard deviation of chlorophyll-a {chl-a CAS 479-61-8} per unit volume of the water body [particulate >unknown phase] by in-situ chlorophyll fluorometer and manufacturer's calibration applied"@en . . "SDN:P01::CLSDPM01" . "The square root of the average of the squares of deviations about the mean of a set of values of the specified measurement."@en . . "chl-a_water_SD_ISfluor_manufctrcal" . "accepted"@en . . . . . . . . . .