{"source":"https://api.gridrock.ai/mcp","tool":"read_witnesses","tier":"tier_u_v1","scope":"mh36","archetype":"warming","cell":{"admin_code":470,"cluster_id":4700000823},"witness":{"present":true,"_store":"standalone_pin","kind":"trajectory","_pin":{"pin_seq":0,"pin_sha256":"fd412a84302331e8ab9ecee85c26003f1b2164fd48494b40fd473a1e628a8a39","pin_publish_utc":"2026-08-03T09:02:55+00:00","source_window_end_utc":"2025-12-31T00:00:00+00:00"},"witnesses":{"tier_u_v1_temp_annual_mean_c":26.948897610697724,"tier_u_v1_temp_trend_c_per_decade":0.1330706546550998,"tier_u_v1_summer_max_mean_c":37.65080871166104,"tier_u_v1_winter_min_mean_c":15.394794658051884,"tier_u_v1_temp_interannual_sd_c":0.5131662150043089,"tier_u_v1_temp_annual_mean_idw_sd_c":0.9912812394524303,"tier_u_v1_temp_trend_idw_sd_c_per_decade":0.10539160724245933,"tier_u_v1_n_stations_idw":6,"tier_u_v1_nearest_station_km":136.561,"tier_u_v1_any_station_warming_sig":true,"tier_u_v1_source_window_end_utc":"2025-12-31T00:00:00+00:00","tier_u_v1_source_natural_cadence_seconds":31536000,"tier_u_v1_overdue_factor_at_publish":0,"floor_tier_u_v1_overdue_vs_natural_cadence_by_factor_N":false}}}