{"ob_id":13789,"names":[{"ob_id":9824,"name":"column-average dry-air mole fraction of atmospheric carbon dioxide (ppm) as used in XCH4 proxy"}],"terms":[{"ob_id":9215,"label":"units","value":"1e-6","vocabulary":""},{"ob_id":13893,"label":"long_name","value":"column-average dry-air mole fraction of atmospheric carbon dioxide (ppm) as used in XCH4 proxy","vocabulary":""},{"ob_id":13894,"label":"var_id","value":"xco2_retrieved","vocabulary":""}]}