{"source":"https://api.gridrock.ai/mcp","tool":"read_witnesses","tier":"tier_u_v1","scope":"mh36","archetype":"warming","cell":{"admin_code":497,"cluster_id":4970001551},"witness":{"present":true,"_store":"standalone_pin","kind":"trajectory","_pin":{"pin_seq":0,"pin_sha256":"2739c3a1931a71cbe94b1d28a45e9812526fb0169d52c1e4c19255f054e0fe2d","pin_publish_utc":"2026-07-27T09:03:06+00:00","source_window_end_utc":"2025-12-31T00:00:00+00:00"},"witnesses":{"tier_u_v1_temp_annual_mean_c":27.277947786906303,"tier_u_v1_temp_trend_c_per_decade":0.30312076688058937,"tier_u_v1_summer_max_mean_c":33.41209557666251,"tier_u_v1_winter_min_mean_c":17.39510362307387,"tier_u_v1_temp_interannual_sd_c":0.5803487024445777,"tier_u_v1_temp_annual_mean_idw_sd_c":0.8803273102247914,"tier_u_v1_temp_trend_idw_sd_c_per_decade":0.07440196726304127,"tier_u_v1_n_stations_idw":6,"tier_u_v1_nearest_station_km":37.6419,"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}}}