{"ob_id":65488,"names":[],"terms":[{"ob_id":35923,"label":"long_name","value":"Ba","vocabulary":""},{"ob_id":64470,"label":"units","value":"","vocabulary":""},{"ob_id":69010,"label":"var_id","value":"23","vocabulary":""},{"ob_id":69251,"label":"standard_name","value":"the concentration of total Ba in PM2.5","vocabulary":""}]}