{"castcheck_version":"0.1.0","schema_version":"0.3","methodology_version":"0.3.1","generated_at":"2026-08-31T06:27:35+00:00","computed_at":"2026-08-31T06:27:35+00:00","data_through":"2026-08-30","next_update":"2026-08-31T11:00:00+00:00","window":{"type":"multiple","days":null,"start":"2026-01-01","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","n_debiased":"days","hit1f":"fraction","hit2f":"fraction","hit3f":"fraction","hit1f_ci_low":"fraction","hit1f_ci_high":"fraction","skill_persistence":"fraction","skill_persistence_debiased":"fraction","skill_ci_low":"fraction","skill_ci_high":"fraction","mae_persistence_common":"degC","mae_debiased":"degC","p_boot":"probability","init_hour":"UTC hour","lead_day":"days"},"method":{"ci":"circular moving-block bootstrap on each group's own realized date 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