. . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Concentration standard deviation of silicate {SiO44- CAS 17181-37-2} per unit volume of the atmosphere [aerosol <1um phase] by filtration and spectrophotometry"@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 . . . . "2018-10-15 17:05:30.0" . "2018-10-15 17:05:30.0" . . . . . . "SDN:P01::ASDSIA01" . "SDN:P01::ASDSIA01" . "SDN:P01::ASDSIA01" . . . "3" . "3" . "false" . . . "SD_SI04_<1um_aerosol" . . "accepted"@en . . . . . . . . . . . . .