https://web.archive.org/web/20140606044606/http://www.icnirp.org/documents/emfgdl.pdfA whole-body average SAR of 0.4 W/kg has therefore been chosen as the restriction that provides adequate protection for occupational exposure. An additional safety factor of 5 is introduced for exposure of the public, giving an average whole-body SAR limit of 0.08 W/kg.