Concentration standard deviation of total phosphorus {total_P CAS 7723-14-0} per unit volume of the water body [dissolved plus reactive particulate <GF/F phase] by filtration DTP_SD_<GFF The square root of the average of the squares of deviations about the mean of a set of values of the specified measurement. 2018-10-15 17:05:31.0 SDN:P01::SDTPWCD1 SDN:P01::SDTPWCD1 SDN:P01::SDTPWCD1 4 4 2018-10-15 17:05:31.0 accepted false