{"ob_id":65581,"names":[],"terms":[{"ob_id":126,"label":"units","value":"ug m-3","vocabulary":""},{"ob_id":69369,"label":"var_id","value":"Mass_Conc_of_K_PM2p5","vocabulary":""},{"ob_id":69370,"label":"standard_name","value":"mass_concentration_of_k_in_pm2p5_ambient_aerosol_particles_in_air","vocabulary":""},{"ob_id":69371,"label":"long_name","value":"Mass concentration of the Potassium component in PM2.5 ambient aerosol particles in air","vocabulary":""}]}