{"ob_id":65516,"names":[],"terms":[{"ob_id":64470,"label":"units","value":"","vocabulary":""},{"ob_id":69010,"label":"var_id","value":"23","vocabulary":""},{"ob_id":69285,"label":"standard_name","value":"the concentration of water soluble Cd in PM2.5","vocabulary":""},{"ob_id":69286,"label":"long_name","value":"Cd ","vocabulary":""}]}