{"ob_id":97659,"names":[],"terms":[{"ob_id":35955,"label":"long_name","value":"Mn","vocabulary":""},{"ob_id":64470,"label":"units","value":"","vocabulary":""},{"ob_id":67830,"label":"var_id","value":"15","vocabulary":""},{"ob_id":69238,"label":"standard_name","value":"the concentration of total Mn in PM2.5","vocabulary":""}]}