{"aspect_id":"AS74","aspect_name":"exposure","aspect_reference":null,"aspect_symbol":null,"name":"exposure roentgen","scale_id":"SC901","scale_name":null,"scale_symbol":null,"scale_type":"ratio","symbol":null,"unit_id":"UN234","unit_name":"roentgen","unit_reference":"https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8#R","unit_symbol":"R"}