{"aspect_id":"AS42","aspect_name":"surface-mass-density","aspect_reference":"https://si-digital-framework.org/quantities/SUDE","aspect_symbol":null,"name":"surface-mass-density kilogram per metre squared","scale_id":"SC1215","scale_name":null,"scale_symbol":null,"scale_type":"ratio","symbol":null,"unit_id":"UN66","unit_name":"kilogram per metre squared","unit_reference":"https://si-digital-framework.org/SI/units/kilogram.metre-2","unit_symbol":"kg.m-2"}