. . . . . . . . . . "SDN:P01::CCH88160" . . . "accepted"@en . . . . "The square root of the average of the squares of deviations about the mean of a set of values of the specified measurement."@en . "Concentration standard deviation of chromium {Cr CAS 7440-47-3} per unit volume of rainwater [dissolved plus reactive particulate phase]"@en . . . "Cr_rainwater_SD" . . . . . .