{"source":"https://api.gridrock.ai/mcp","tool":"read_witnesses","tier":"tier_u_v1","scope":"mh36","archetype":"warming","cell":{"admin_code":492,"cluster_id":4920006829},"witness":{"present":true,"_store":"standalone_pin","kind":"trajectory","_pin":{"pin_seq":0,"pin_sha256":"fd412a84302331e8ab9ecee85c26003f1b2164fd48494b40fd473a1e628a8a39","pin_publish_utc":"2026-10-05T09:03:15+00:00","source_window_end_utc":"2025-12-31T00:00:00+00:00"},"witnesses":{"tier_u_v1_temp_annual_mean_c":26.195891460783198,"tier_u_v1_temp_trend_c_per_decade":0.1669924420299656,"tier_u_v1_summer_max_mean_c":33.695962067748525,"tier_u_v1_winter_min_mean_c":16.462821981157187,"tier_u_v1_temp_interannual_sd_c":0.4399739291245717,"tier_u_v1_temp_annual_mean_idw_sd_c":1.3606483905991333,"tier_u_v1_temp_trend_idw_sd_c_per_decade":0.0924399026178236,"tier_u_v1_n_stations_idw":6,"tier_u_v1_nearest_station_km":106.4137,"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}}}