{"castcheck_version":"0.1.0","schema_version":"0.1","methodology_version":"0.2","generated_at":"2026-08-31T03:51:00+00:00","computed_at":"2026-08-31T03:51:00+00:00","data_through":"2026-08-30","next_update":"2026-08-31T11:00:00+00:00","window":{"type":"multiple","days":null,"start":"2024-01-02","end":"2026-08-30"},"units":{"mae":"degC","bias":"degC","rmse":"degC","mae_ci_low":"degC","mae_ci_high":"degC","bias_ci_low":"degC","bias_ci_high":"degC","mae_diff":"degC","ci_low":"degC","ci_high":"degC","n":"days","n_common":"days","hit1f":"fraction","hit2f":"fraction","hit3f":"fraction","skill_persistence":"fraction","init_hour":"UTC hour","lead_day":"days"},"method":{"ci":"circular moving-block bootstrap over climatological days","resamples":1000,"level":0.95,"block":"7 days","min_n":30,"ref":"https://castcheck.zifanzhang.com/methodology/"},"truth":{"source":"NWS Daily Climate Report (CLI), first final issuance after local midnight","fallback":["CF6 monthly summary","hourly station observations (flagged)"],"policy":"first-final; later corrections are stored but never change a published score"},"license":"CC-BY-4.0 (CastCheck derived data); see /data/ for upstream licences","site":"https://castcheck.zifanzhang.com","station_id":"ALL","model_id":"graphcast_gfs","lead_day":1,"model_version":"GRAP_v100","segment_start":"2026-08-28","permalink":"/station/ALL/model/graphcast_gfs/lead/1/","scores":{"columns":["init_hour","variable","method","window","n","n_stations","n_flagged","mae","bias","rmse","hit1f","hit2f","hit3f","mae_debiased","skill_persistence","skill_persistence_debiased","mae_ci_low","mae_ci_high","bias_ci_low","bias_ci_high","rmse_ci_low","rmse_ci_high","hit1f_ci_low","hit1f_ci_high","period_start","period_end"],"rows":[[0,"tmax","bilinear","30d",1,23.0,1,3.304,-3.304,3.55,0.0,0.0,0.043,0.0,-0.874,null,3.304,3.304,-3.304,-3.304,3.55,3.55,0.0,0.0,"2026-08-30","2026-08-30"],[0,"tmax","nearest","30d",1,23.0,1,3.319,-3.266,3.617,0.0,0.043,0.087,0.0,-0.882,null,3.319,3.319,-3.266,-3.266,3.617,3.617,0.0,0.0,"2026-08-30","2026-08-30"],[12,"tmax","bilinear","30d",2,23.0,2,3.253,-3.253,3.569,0.043,0.109,0.152,0.213,-0.897,0.422,3.04,3.466,-3.466,-3.04,3.315,3.806,0.043,0.043,"2026-08-29","2026-08-30"],[12,"tmax","nearest","30d",2,23.0,2,3.264,-3.243,3.64,0.065,0.13,0.174,0.243,-0.903,0.341,3.043,3.486,-3.486,-3.0,3.382,3.881,0.043,0.087,"2026-08-29","2026-08-30"],[0,"tmax","bilinear","365d",1,23.0,1,3.304,-3.304,3.55,0.0,0.0,0.043,0.0,-0.874,null,3.304,3.304,-3.304,-3.304,3.55,3.55,0.0,0.0,"2026-08-30","2026-08-30"],[0,"tmax","nearest","365d",1,23.0,1,3.319,-3.266,3.617,0.0,0.043,0.087,0.0,-0.882,null,3.319,3.319,-3.266,-3.266,3.617,3.617,0.0,0.0,"2026-08-30","2026-08-30"],[12,"tmax","bilinear","365d",2,23.0,2,3.253,-3.253,3.569,0.043,0.109,0.152,0.213,-0.897,0.422,3.04,3.466,-3.466,-3.04,3.315,3.806,0.043,0.043,"2026-08-29","2026-08-30"],[12,"tmax","nearest","365d",2,23.0,2,3.264,-3.243,3.64,0.065,0.13,0.174,0.243,-0.903,0.341,3.043,3.486,-3.486,-3.0,3.382,3.881,0.043,0.087,"2026-08-29","2026-08-30"],[0,"tmax","bilinear","90d",1,23.0,1,3.304,-3.304,3.55,0.0,0.0,0.043,0.0,-0.874,null,3.304,3.304,-3.304,-3.304,3.55,3.55,0.0,0.0,"2026-08-30","2026-08-30"],[0,"tmax","nearest","90d",1,23.0,1,3.319,-3.266,3.617,0.0,0.043,0.087,0.0,-0.882,null,3.319,3.319,-3.266,-3.266,3.617,3.617,0.0,0.0,"2026-08-30","2026-08-30"],[12,"tmax","bilinear","90d",2,23.0,2,3.253,-3.253,3.569,0.043,0.109,0.152,0.213,-0.897,0.422,3.04,3.466,-3.466,-3.04,3.315,3.806,0.043,0.043,"2026-08-29","2026-08-30"],[12,"tmax","nearest","90d",2,23.0,2,3.264,-3.243,3.64,0.065,0.13,0.174,0.243,-0.903,0.341,3.043,3.486,-3.486,-3.0,3.382,3.881,0.043,0.087,"2026-08-29","2026-08-30"],[0,"tmax","bilinear","all",1,23.0,1,3.304,-3.304,3.55,0.0,0.0,0.043,0.0,-0.874,null,3.304,3.304,-3.304,-3.304,3.55,3.55,0.0,0.0,"2026-08-30","2026-08-30"],[0,"tmax","nearest","all",1,23.0,1,3.319,-3.266,3.617,0.0,0.043,0.087,0.0,-0.882,null,3.319,3.319,-3.266,-3.266,3.617,3.617,0.0,0.0,"2026-08-30","2026-08-30"],[12,"tmax","bilinear","all",2,23.0,2,3.253,-3.253,3.569,0.043,0.109,0.152,0.213,-0.897,0.422,3.04,3.466,-3.466,-3.04,3.315,3.806,0.043,0.043,"2026-08-29","2026-08-30"],[12,"tmax","nearest","all",2,23.0,2,3.264,-3.243,3.64,0.065,0.13,0.174,0.243,-0.903,0.341,3.043,3.486,-3.486,-3.0,3.382,3.881,0.043,0.087,"2026-08-29","2026-08-30"],[0,"tmin","bilinear","30d",1,23.0,1,1.521,-0.179,2.073,0.348,0.522,0.696,0.0,-0.312,null,1.521,1.521,-0.179,-0.179,2.073,2.073,0.348,0.348,"2026-08-30","2026-08-30"],[0,"tmin","nearest","30d",1,23.0,1,1.56,-0.201,2.178,0.348,0.522,0.696,0.0,-0.345,null,1.56,1.56,-0.201,-0.201,2.178,2.178,0.348,0.348,"2026-08-30","2026-08-30"],[12,"tmin","bilinear","30d",2,23.0,2,1.518,0.342,1.975,0.217,0.522,0.674,0.379,-0.055,0.574,1.453,1.583,-0.037,0.721,1.894,2.052,0.174,0.261,"2026-08-29","2026-08-30"],[12,"tmin","nearest","30d",2,23.0,2,1.571,0.329,2.067,0.174,0.522,0.696,0.379,-0.093,0.574,1.526,1.617,-0.05,0.708,2.011,2.121,0.087,0.261,"2026-08-29","2026-08-30"],[0,"tmin","bilinear","365d",1,23.0,1,1.521,-0.179,2.073,0.348,0.522,0.696,0.0,-0.312,null,1.521,1.521,-0.179,-0.179,2.073,2.073,0.348,0.348,"2026-08-30","2026-08-30"],[0,"tmin","nearest","365d",1,23.0,1,1.56,-0.201,2.178,0.348,0.522,0.696,0.0,-0.345,null,1.56,1.56,-0.201,-0.201,2.178,2.178,0.348,0.348,"2026-08-30","2026-08-30"],[12,"tmin","bilinear","365d",2,23.0,2,1.518,0.342,1.975,0.217,0.522,0.674,0.379,-0.055,0.574,1.453,1.583,-0.037,0.721,1.894,2.052,0.174,0.261,"2026-08-29","2026-08-30"],[12,"tmin","nearest","365d",2,23.0,2,1.571,0.329,2.067,0.174,0.522,0.696,0.379,-0.093,0.574,1.526,1.617,-0.05,0.708,2.011,2.121,0.087,0.261,"2026-08-29","2026-08-30"],[0,"tmin","bilinear","90d",1,23.0,1,1.521,-0.179,2.073,0.348,0.522,0.696,0.0,-0.312,null,1.521,1.521,-0.179,-0.179,2.073,2.073,0.348,0.348,"2026-08-30","2026-08-30"],[0,"tmin","nearest","90d",1,23.0,1,1.56,-0.201,2.178,0.348,0.522,0.696,0.0,-0.345,null,1.56,1.56,-0.201,-0.201,2.178,2.178,0.348,0.348,"2026-08-30","2026-08-30"],[12,"tmin","bilinear","90d",2,23.0,2,1.518,0.342,1.975,0.217,0.522,0.674,0.379,-0.055,0.574,1.453,1.583,-0.037,0.721,1.894,2.052,0.174,0.261,"2026-08-29","2026-08-30"],[12,"tmin","nearest","90d",2,23.0,2,1.571,0.329,2.067,0.174,0.522,0.696,0.379,-0.093,0.574,1.526,1.617,-0.05,0.708,2.011,2.121,0.087,0.261,"2026-08-29","2026-08-30"],[0,"tmin","bilinear","all",1,23.0,1,1.521,-0.179,2.073,0.348,0.522,0.696,0.0,-0.312,null,1.521,1.521,-0.179,-0.179,2.073,2.073,0.348,0.348,"2026-08-30","2026-08-30"],[0,"tmin","nearest","all",1,23.0,1,1.56,-0.201,2.178,0.348,0.522,0.696,0.0,-0.345,null,1.56,1.56,-0.201,-0.201,2.178,2.178,0.348,0.348,"2026-08-30","2026-08-30"],[12,"tmin","bilinear","all",2,23.0,2,1.518,0.342,1.975,0.217,0.522,0.674,0.379,-0.055,0.574,1.453,1.583,-0.037,0.721,1.894,2.052,0.174,0.261,"2026-08-29","2026-08-30"],[12,"tmin","nearest","all",2,23.0,2,1.571,0.329,2.067,0.174,0.522,0.696,0.379,-0.093,0.574,1.526,1.617,-0.05,0.708,2.011,2.121,0.087,0.261,"2026-08-29","2026-08-30"]]},"pairwise_scope":{"window":"90d","init_hour":0,"method":"bilinear","note":"every window/init/method is in pairwise/latest.json"},"pairwise":{"columns":["station_id","init_hour","lead_day","variable","window","model_a","model_b","n_common","mae_diff","ci_low","ci_high","significant","method"],"rows":[["ALL",0,1,"tmax","90d","aifs_single","graphcast_gfs",1,-1.595,-1.595,-1.595,true,"bilinear"],["ALL",0,1,"tmax","90d","aurora_gfs","graphcast_gfs",1,0.191,0.191,0.191,true,"bilinear"],["ALL",0,1,"tmax","90d","aurora_ifs","graphcast_gfs",1,-0.488,-0.488,-0.488,true,"bilinear"],["ALL",0,1,"tmax","90d","fourcastnet_gfs","graphcast_gfs",1,-1.138,-1.138,-1.138,true,"bilinear"],["ALL",0,1,"tmax","90d","fourcastnet_ifs","graphcast_gfs",1,-1.267,-1.267,-1.267,true,"bilinear"],["ALL",0,1,"tmax","90d","gfs","graphcast_gfs",1,-1.831,-1.831,-1.831,true,"bilinear"],["ALL",0,1,"tmax","90d","graphcast_gfs","graphcast_ifs",1,0.378,0.378,0.378,true,"bilinear"],["ALL",0,1,"tmax","90d","graphcast_gfs","ifs_hres",1,1.473,1.473,1.473,true,"bilinear"],["ALL",0,1,"tmax","90d","graphcast_gfs","pangu_gfs",1,1.354,1.354,1.354,true,"bilinear"],["ALL",0,1,"tmax","90d","graphcast_gfs","pangu_ifs",1,1.224,1.224,1.224,true,"bilinear"],["ALL",0,1,"tmax","90d","graphcast_gfs","persistence",1,1.541,1.541,1.541,true,"bilinear"],["ALL",0,1,"tmin","90d","aifs_single","graphcast_gfs",1,-0.246,-0.246,-0.246,true,"bilinear"],["ALL",0,1,"tmin","90d","aurora_gfs","graphcast_gfs",1,0.017,0.017,0.017,true,"bilinear"],["ALL",0,1,"tmin","90d","aurora_ifs","graphcast_gfs",1,-0.209,-0.209,-0.209,true,"bilinear"],["ALL",0,1,"tmin","90d","fourcastnet_gfs","graphcast_gfs",1,-0.173,-0.173,-0.173,true,"bilinear"],["ALL",0,1,"tmin","90d","fourcastnet_ifs","graphcast_gfs",1,-0.319,-0.319,-0.319,true,"bilinear"],["ALL",0,1,"tmin","90d","gfs","graphcast_gfs",1,0.331,0.331,0.331,true,"bilinear"],["ALL",0,1,"tmin","90d","graphcast_gfs","graphcast_ifs",1,0.339,0.339,0.339,true,"bilinear"],["ALL",0,1,"tmin","90d","graphcast_gfs","ifs_hres",1,0.295,0.295,0.295,true,"bilinear"],["ALL",0,1,"tmin","90d","graphcast_gfs","pangu_gfs",1,0.207,0.207,0.207,true,"bilinear"],["ALL",0,1,"tmin","90d","graphcast_gfs","pangu_ifs",1,0.341,0.341,0.341,true,"bilinear"],["ALL",0,1,"tmin","90d","graphcast_gfs","persistence",1,0.362,0.362,0.362,true,"bilinear"]]},"series_days":90,"series_scope":{"init_hour":0,"method":"bilinear","note":"other init/method slices and the matching forecast and observation values are in /data/daily_errors.csv.gz"},"series":[]}