{"ob_id":68177,"names":[],"terms":[{"ob_id":20396,"label":"units","value":"1e-12","vocabulary":""},{"ob_id":27924,"label":"standard_name","value":"mole_fraction_of_perchloroethene_in_air","vocabulary":""},{"ob_id":73016,"label":"var_id","value":"pce","vocabulary":""},{"ob_id":73017,"label":"long_name","value":"Mole fraction of perchloroethene (pce) in air","vocabulary":""}]}