{"ob_id":21664,"names":[{"ob_id":15937,"name":"Number of days with ground frost (minimum grass temperature below zero)"}],"terms":[{"ob_id":11959,"label":"units","value":"1.0","vocabulary":""},{"ob_id":22558,"label":"long_name","value":"Number of days with ground frost (minimum grass temperature below zero)","vocabulary":""},{"ob_id":22559,"label":"var_id","value":"groundfrost","vocabulary":""}]}