{"ob_id":95751,"names":[],"terms":[{"ob_id":6469,"label":"long_name","value":"Br","vocabulary":""},{"ob_id":64470,"label":"units","value":"","vocabulary":""},{"ob_id":67847,"label":"var_id","value":"21","vocabulary":""},{"ob_id":69283,"label":"standard_name","value":"the concentration of water soluble Br in PM2.5","vocabulary":""}]}