{"ob_id":65475,"names":[],"terms":[{"ob_id":21700,"label":"long_name","value":"K","vocabulary":""},{"ob_id":34175,"label":"var_id","value":"11","vocabulary":""},{"ob_id":64470,"label":"units","value":"","vocabulary":""},{"ob_id":69234,"label":"standard_name","value":"the concentration of total K in PM2.5","vocabulary":""}]}