. "SDN:P01::AMSDAAZX" . . . . "2018-10-15 17:05:30.0" . "NH4_SD" . "SDN:P01::AMSDAAZX" . "false" . . "The square root of the average of the squares of deviations about the mean of a set of values of the specified measurement."@en . . . "SDN:P01::AMSDAAZX" . . . "4" . . "2018-10-15 17:05:30.0" . . "4" . "accepted"@en . . . "Concentration standard deviation of ammonium {NH4+ CAS 14798-03-9} per unit volume of the water body [unknown phase] by colorimetric autoanalysis"@en . . .