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Diagnostic use only: never a headline or ranking value.", "quality_summary": { "structure_suppression": { "masked_fraction": 0.011, "windows_resited": [], "windows_unresolved": [] }, "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.091, "obstruction_max_height_m": 15.49, "flagged_windows_m": [ 50, 100 ] }, "excluded_ranges_m": [ [ 0.0, 33.0 ] ], "review": [], "extent": [ "may_start_earlier" ] }, "provenance": { "analysis_version": "0.1.0", "sample_interval_m": 1.0, "interpolation": "bilinear", "smoothing": "none", "gradient_windows_m": [ 5.0, 10.0, 20.0, 25.0, 50.0, 100.0 ], "diagnostic_windows_m": [ 2.0, 3.0 ], "elevation_crs": "EPSG:27700", "elevation_resolution_m": 1.0, "elevation_tiles": [ "data/cache/england/bulk_dtm_1m/SS6510.tif", "data/cache/england/bulk_dtm_1m/SS7010.tif" ], "calculated_at": "2026-09-05T02:02:48+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "/mnt/HC_Volume_106792346/hunt-gb/regions/region-04.osm.pbf", "osm_snapshot": "", "run_id": "hunt-england-260905", "elevation_provider": "Environment Agency", "elevation_dataset": "EA LIDAR Composite DTM 1m (2022)", "elevation_licence": "Open Government Licence v3 \u2014 \u00a9 Environment Agency", "elevation_coverage_id": "13787b9a-26a4-4775-8523-806d13af58fc__Lidar_Composite_Elevation_DTM_1m", "elevation_tile_ids": [ "SS6510.tif", "SS7010.tif" ], "climb_origin": "discovered", "mask_basin_extension_m": 13.0, "license": "ODbL-1.0", "license_url": "https://howsteep.org/licensing" }, "area": { "place": "Chulmleigh", "county": "Devon" } }