{"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":"pangu_ifs","lead_day":2,"model_version":"PANG_v100","segment_start":"2026-08-28","permalink":"/station/ALL/model/pangu_ifs/lead/2/","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",1,23.0,1,2.25,-1.862,2.444,0.043,0.13,0.261,0.0,-0.204,null,2.25,2.25,-1.862,-1.862,2.444,2.444,0.043,0.043,"2026-08-30","2026-08-30"],[0,"tmax","nearest","30d",1,23.0,1,2.345,-1.955,2.577,0.043,0.13,0.261,0.0,-0.255,null,2.345,2.345,-1.955,-1.955,2.577,2.577,0.043,0.043,"2026-08-30","2026-08-30"],[12,"tmax","bilinear","30d",1,23.0,1,2.0,-1.552,2.222,0.043,0.217,0.348,0.0,-0.071,null,2.0,2.0,-1.552,-1.552,2.222,2.222,0.043,0.043,"2026-08-30","2026-08-30"],[12,"tmax","nearest","30d",1,23.0,1,2.07,-1.646,2.324,0.043,0.261,0.348,0.0,-0.108,null,2.07,2.07,-1.646,-1.646,2.324,2.324,0.043,0.043,"2026-08-30","2026-08-30"],[0,"tmax","bilinear","365d",1,23.0,1,2.25,-1.862,2.444,0.043,0.13,0.261,0.0,-0.204,null,2.25,2.25,-1.862,-1.862,2.444,2.444,0.043,0.043,"2026-08-30","2026-08-30"],[0,"tmax","nearest","365d",1,23.0,1,2.345,-1.955,2.577,0.043,0.13,0.261,0.0,-0.255,null,2.345,2.345,-1.955,-1.955,2.577,2.577,0.043,0.043,"2026-08-30","2026-08-30"],[12,"tmax","bilinear","365d",1,23.0,1,2.0,-1.552,2.222,0.043,0.217,0.348,0.0,-0.071,null,2.0,2.0,-1.552,-1.552,2.222,2.222,0.043,0.043,"2026-08-30","2026-08-30"],[12,"tmax","nearest","365d",1,23.0,1,2.07,-1.646,2.324,0.043,0.261,0.348,0.0,-0.108,null,2.07,2.07,-1.646,-1.646,2.324,2.324,0.043,0.043,"2026-08-30","2026-08-30"],[0,"tmax","bilinear","90d",1,23.0,1,2.25,-1.862,2.444,0.043,0.13,0.261,0.0,-0.204,null,2.25,2.25,-1.862,-1.862,2.444,2.444,0.043,0.043,"2026-08-30","2026-08-30"],[0,"tmax","nearest","90d",1,23.0,1,2.345,-1.955,2.577,0.043,0.13,0.261,0.0,-0.255,null,2.345,2.345,-1.955,-1.955,2.577,2.577,0.043,0.043,"2026-08-30","2026-08-30"],[12,"tmax","bilinear","90d",1,23.0,1,2.0,-1.552,2.222,0.043,0.217,0.348,0.0,-0.071,null,2.0,2.0,-1.552,-1.552,2.222,2.222,0.043,0.043,"2026-08-30","2026-08-30"],[12,"tmax","nearest","90d",1,23.0,1,2.07,-1.646,2.324,0.043,0.261,0.348,0.0,-0.108,null,2.07,2.07,-1.646,-1.646,2.324,2.324,0.043,0.043,"2026-08-30","2026-08-30"],[0,"tmax","bilinear","all",1,23.0,1,2.25,-1.862,2.444,0.043,0.13,0.261,0.0,-0.204,null,2.25,2.25,-1.862,-1.862,2.444,2.444,0.043,0.043,"2026-08-30","2026-08-30"],[0,"tmax","nearest","all",1,23.0,1,2.345,-1.955,2.577,0.043,0.13,0.261,0.0,-0.255,null,2.345,2.345,-1.955,-1.955,2.577,2.577,0.043,0.043,"2026-08-30","2026-08-30"],[12,"tmax","bilinear","all",1,23.0,1,2.0,-1.552,2.222,0.043,0.217,0.348,0.0,-0.071,null,2.0,2.0,-1.552,-1.552,2.222,2.222,0.043,0.043,"2026-08-30","2026-08-30"],[12,"tmax","nearest","all",1,23.0,1,2.07,-1.646,2.324,0.043,0.261,0.348,0.0,-0.108,null,2.07,2.07,-1.646,-1.646,2.324,2.324,0.043,0.043,"2026-08-30","2026-08-30"],[0,"tmin","bilinear","30d",1,23.0,1,1.323,-0.427,1.699,0.261,0.478,0.696,0.0,0.272,null,1.323,1.323,-0.427,-0.427,1.699,1.699,0.261,0.261,"2026-08-30","2026-08-30"],[0,"tmin","nearest","30d",1,23.0,1,1.339,-0.478,1.806,0.304,0.522,0.652,0.0,0.264,null,1.339,1.339,-0.478,-0.478,1.806,1.806,0.304,0.304,"2026-08-30","2026-08-30"],[12,"tmin","bilinear","30d",1,23.0,1,1.478,-0.466,1.858,0.087,0.435,0.783,0.0,0.187,null,1.478,1.478,-0.466,-0.466,1.858,1.858,0.087,0.087,"2026-08-30","2026-08-30"],[12,"tmin","nearest","30d",1,23.0,1,1.495,-0.497,1.985,0.13,0.478,0.696,0.0,0.178,null,1.495,1.495,-0.497,-0.497,1.985,1.985,0.13,0.13,"2026-08-30","2026-08-30"],[0,"tmin","bilinear","365d",1,23.0,1,1.323,-0.427,1.699,0.261,0.478,0.696,0.0,0.272,null,1.323,1.323,-0.427,-0.427,1.699,1.699,0.261,0.261,"2026-08-30","2026-08-30"],[0,"tmin","nearest","365d",1,23.0,1,1.339,-0.478,1.806,0.304,0.522,0.652,0.0,0.264,null,1.339,1.339,-0.478,-0.478,1.806,1.806,0.304,0.304,"2026-08-30","2026-08-30"],[12,"tmin","bilinear","365d",1,23.0,1,1.478,-0.466,1.858,0.087,0.435,0.783,0.0,0.187,null,1.478,1.478,-0.466,-0.466,1.858,1.858,0.087,0.087,"2026-08-30","2026-08-30"],[12,"tmin","nearest","365d",1,23.0,1,1.495,-0.497,1.985,0.13,0.478,0.696,0.0,0.178,null,1.495,1.495,-0.497,-0.497,1.985,1.985,0.13,0.13,"2026-08-30","2026-08-30"],[0,"tmin","bilinear","90d",1,23.0,1,1.323,-0.427,1.699,0.261,0.478,0.696,0.0,0.272,null,1.323,1.323,-0.427,-0.427,1.699,1.699,0.261,0.261,"2026-08-30","2026-08-30"],[0,"tmin","nearest","90d",1,23.0,1,1.339,-0.478,1.806,0.304,0.522,0.652,0.0,0.264,null,1.339,1.339,-0.478,-0.478,1.806,1.806,0.304,0.304,"2026-08-30","2026-08-30"],[12,"tmin","bilinear","90d",1,23.0,1,1.478,-0.466,1.858,0.087,0.435,0.783,0.0,0.187,null,1.478,1.478,-0.466,-0.466,1.858,1.858,0.087,0.087,"2026-08-30","2026-08-30"],[12,"tmin","nearest","90d",1,23.0,1,1.495,-0.497,1.985,0.13,0.478,0.696,0.0,0.178,null,1.495,1.495,-0.497,-0.497,1.985,1.985,0.13,0.13,"2026-08-30","2026-08-30"],[0,"tmin","bilinear","all",1,23.0,1,1.323,-0.427,1.699,0.261,0.478,0.696,0.0,0.272,null,1.323,1.323,-0.427,-0.427,1.699,1.699,0.261,0.261,"2026-08-30","2026-08-30"],[0,"tmin","nearest","all",1,23.0,1,1.339,-0.478,1.806,0.304,0.522,0.652,0.0,0.264,null,1.339,1.339,-0.478,-0.478,1.806,1.806,0.304,0.304,"2026-08-30","2026-08-30"],[12,"tmin","bilinear","all",1,23.0,1,1.478,-0.466,1.858,0.087,0.435,0.783,0.0,0.187,null,1.478,1.478,-0.466,-0.466,1.858,1.858,0.087,0.087,"2026-08-30","2026-08-30"],[12,"tmin","nearest","all",1,23.0,1,1.495,-0.497,1.985,0.13,0.478,0.696,0.0,0.178,null,1.495,1.495,-0.497,-0.497,1.985,1.985,0.13,0.13,"2026-08-30","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",0,2,"tmax","90d","aifs_single","pangu_ifs",1,-0.499,-0.499,-0.499,true,"bilinear"],["ALL",0,2,"tmax","90d","aurora_ifs","pangu_ifs",1,0.546,0.546,0.546,true,"bilinear"],["ALL",0,2,"tmax","90d","fourcastnet_ifs","pangu_ifs",1,-0.211,-0.211,-0.211,true,"bilinear"],["ALL",0,2,"tmax","90d","gfs","pangu_ifs",1,-0.506,-0.506,-0.506,true,"bilinear"],["ALL",0,2,"tmax","90d","graphcast_ifs","pangu_ifs",1,0.591,0.591,0.591,true,"bilinear"],["ALL",0,2,"tmax","90d","ifs_hres","pangu_ifs",1,-0.425,-0.425,-0.425,true,"bilinear"],["ALL",0,2,"tmax","90d","pangu_ifs","persistence",1,0.381,0.381,0.381,true,"bilinear"],["ALL",0,2,"tmin","90d","aifs_single","pangu_ifs",1,-0.025,-0.025,-0.025,true,"bilinear"],["ALL",0,2,"tmin","90d","aurora_ifs","pangu_ifs",1,0.096,0.096,0.096,true,"bilinear"],["ALL",0,2,"tmin","90d","fourcastnet_ifs","pangu_ifs",1,0.108,0.108,0.108,true,"bilinear"],["ALL",0,2,"tmin","90d","gfs","pangu_ifs",1,0.629,0.629,0.629,true,"bilinear"],["ALL",0,2,"tmin","90d","graphcast_ifs","pangu_ifs",1,0.006,0.006,0.006,true,"bilinear"],["ALL",0,2,"tmin","90d","ifs_hres","pangu_ifs",1,-0.022,-0.022,-0.022,true,"bilinear"],["ALL",0,2,"tmin","90d","pangu_ifs","persistence",1,-0.495,-0.495,-0.495,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":[]}