. "Concentration standard deviation of sulfate {SO4(2-) sulphate CAS 14808-79-8} per unit volume of the atmosphere [aerosol >1um phase]"@en . "SDN:P01::CSU88140" . . . . "The square root of the average of the squares of deviations about the mean of a set of values of the specified measurement."@en . "SO4(2-)_sulfate_aerosol_>1um_SD" . . . "accepted"@en . . . . . . . . . . . . . . . . . . . .