{
 "ocl_version": "0.1.0",
 "name": "Rue du Phare",
 "slug": "rue-du-phare",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 22.372754569933484,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 112.0,
   "end_distance_m": 114.0,
   "start_elevation_m": 23.168515629448656,
   "end_elevation_m": 23.615970720847326,
   "min_gradient_pct": -0.15293065132979677
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.262369982104563,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 111.0,
   "end_distance_m": 114.0,
   "start_elevation_m": 22.97809962138419,
   "end_elevation_m": 23.615970720847326,
   "min_gradient_pct": 0.8093331040666859
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.19087501692711,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 108.0,
   "end_distance_m": 113.0,
   "start_elevation_m": 22.351815404658268,
   "end_elevation_m": 23.411359155504623,
   "min_gradient_pct": 1.6273895078070666
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 20.66398222222965,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 108.0,
   "end_distance_m": 118.0,
   "start_elevation_m": 22.351815404658268,
   "end_elevation_m": 24.418213626881233,
   "min_gradient_pct": 2.0538162902274593
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.498106573537083,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 104.0,
   "end_distance_m": 124.0,
   "start_elevation_m": 21.55021070917558,
   "end_elevation_m": 25.649832023882997,
   "min_gradient_pct": 2.402082587123644
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.183833804508595,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 99.0,
   "end_distance_m": 124.0,
   "start_elevation_m": 20.603873572755848,
   "end_elevation_m": 25.649832023882997,
   "min_gradient_pct": 2.391864187916042
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.271664852220397,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 100.0,
   "end_distance_m": 150.0,
   "start_elevation_m": 20.78641610183658,
   "end_elevation_m": 30.422248527946778,
   "min_gradient_pct": 2.4993489430013796
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.47148533517554,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 74.0,
   "end_distance_m": 174.0,
   "start_elevation_m": 16.358350207926502,
   "end_elevation_m": 34.82983554310204,
   "min_gradient_pct": 2.7068837080371964
  }
 ],
 "shape": {
  "ascent_concentration": 0.428,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 266.0,
  "shape_class": "sustained"
 },
 "length_m": 490.40000000015226,
 "start_elevation_m": 7.035278600294768,
 "end_elevation_m": 58.49536686896179,
 "endpoint_gain_m": 51.46008826866702,
 "overall_gradient_pct": 10.493492713835858,
 "accumulated_ascent_m": 51.50165150982346,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.19087501692711,
   "start_distance_m": 108.0,
   "end_distance_m": 113.0,
   "midpoint_distance_m": 110.5,
   "start_elevation_m": 22.351815404658268,
   "end_elevation_m": 23.411359155504623,
   "start_xy": [
    426968.9099236536,
    6923065.697778031
   ],
   "end_xy": [
    426964.173036318,
    6923067.275581554
   ]
  },
  "max_10m": {
   "gradient_pct": 20.66398222222965,
   "start_distance_m": 108.0,
   "end_distance_m": 118.0,
   "midpoint_distance_m": 113.0,
   "start_elevation_m": 22.351815404658268,
   "end_elevation_m": 24.418213626881233,
   "start_xy": [
    426968.9099236536,
    6923065.697778031
   ],
   "end_xy": [
    426959.45893196436,
    6923068.9420809215
   ]
  },
  "max_20m": {
   "gradient_pct": 20.498106573537083,
   "start_distance_m": 104.0,
   "end_distance_m": 124.0,
   "midpoint_distance_m": 114.0,
   "start_elevation_m": 21.55021070917558,
   "end_elevation_m": 25.649832023882997,
   "start_xy": [
    426972.8568643417,
    6923065.048425118
   ],
   "end_xy": [
    426953.80200673995,
    6923070.941880163
   ]
  },
  "max_25m": {
   "gradient_pct": 20.183833804508595,
   "start_distance_m": 99.0,
   "end_distance_m": 124.0,
   "midpoint_distance_m": 111.5,
   "start_elevation_m": 20.603873572755848,
   "end_elevation_m": 25.649832023882997,
   "start_xy": [
    426977.8047299058,
    6923064.352802319
   ],
   "end_xy": [
    426953.80200673995,
    6923070.941880163
   ]
  },
  "max_50m": {
   "gradient_pct": 19.271664852220397,
   "start_distance_m": 100.0,
   "end_distance_m": 150.0,
   "midpoint_distance_m": 125.0,
   "start_elevation_m": 20.78641610183658,
   "end_elevation_m": 30.422248527946778,
   "start_xy": [
    426976.80794731644,
    6923064.432955108
   ],
   "end_xy": [
    426929.3119605252,
    6923079.673162346
   ]
  },
  "max_100m": {
   "gradient_pct": 18.47148533517554,
   "start_distance_m": 74.0,
   "end_distance_m": 174.0,
   "midpoint_distance_m": 124.0,
   "start_elevation_m": 16.358350207926502,
   "end_elevation_m": 34.82983554310204,
   "start_xy": [
    427002.52044194174,
    6923067.504145171
   ],
   "end_xy": [
    426906.7162148767,
    6923087.762184449
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.6273895078070666,
   "start_distance_m": 397.0,
   "end_distance_m": 402.0,
   "midpoint_distance_m": 399.5,
   "start_elevation_m": 56.02459851292526,
   "end_elevation_m": 56.10596798831561,
   "start_xy": [
    426693.4790674154,
    6923066.964246169
   ],
   "end_xy": [
    426688.86543399625,
    6923065.036971753
   ]
  },
  "min_10m": {
   "gradient_pct": 2.0538162902274593,
   "start_distance_m": 476.0,
   "end_distance_m": 486.0,
   "midpoint_distance_m": 481.0,
   "start_elevation_m": 58.15756726412533,
   "end_elevation_m": 58.36294889314808,
   "start_xy": [
    426620.583659393,
    6923036.513310399
   ],
   "end_xy": [
    426611.5304806148,
    6923032.2678318
   ]
  },
  "min_20m": {
   "gradient_pct": 2.402082587123644,
   "start_distance_m": 448.0,
   "end_distance_m": 468.0,
   "midpoint_distance_m": 458.0,
   "start_elevation_m": 57.42176640746548,
   "end_elevation_m": 57.90218292489021,
   "start_xy": [
    426646.4200065402,
    6923047.306047128
   ],
   "end_xy": [
    426627.96547286364,
    6923039.596949465
   ]
  },
  "min_25m": {
   "gradient_pct": 2.391864187916042,
   "start_distance_m": 443.0,
   "end_distance_m": 468.0,
   "midpoint_distance_m": 455.5,
   "start_elevation_m": 57.3042168779112,
   "end_elevation_m": 57.90218292489021,
   "start_xy": [
    426651.03363995935,
    6923049.233321544
   ],
   "end_xy": [
    426627.96547286364,
    6923039.596949465
   ]
  },
  "min_50m": {
   "gradient_pct": 2.4993489430013796,
   "start_distance_m": 436.0,
   "end_distance_m": 486.0,
   "midpoint_distance_m": 461.0,
   "start_elevation_m": 57.11327442164739,
   "end_elevation_m": 58.36294889314808,
   "start_xy": [
    426657.49272674613,
    6923051.931505726
   ],
   "end_xy": [
    426611.5304806148,
    6923032.2678318
   ]
  },
  "min_100m": {
   "gradient_pct": 2.7068837080371964,
   "start_distance_m": 390.0,
   "end_distance_m": 490.0,
   "midpoint_distance_m": 440.0,
   "start_elevation_m": 55.78182155665965,
   "end_elevation_m": 58.48870526469685,
   "start_xy": [
    426699.9857830777,
    6923069.543187247
   ],
   "end_xy": [
    426607.91524186084,
    6923030.556093282
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 22.372754569933484,
   "start_distance_m": 112.0,
   "end_distance_m": 114.0,
   "midpoint_distance_m": 113.0,
   "start_elevation_m": 23.168515629448656,
   "end_elevation_m": 23.615970720847326,
   "start_xy": [
    426965.1158571887,
    6923066.94228168
   ],
   "end_xy": [
    426963.23021544726,
    6923067.608881427
   ]
  },
  "max_3m": {
   "gradient_pct": 21.262369982104563,
   "start_distance_m": 111.0,
   "end_distance_m": 114.0,
   "midpoint_distance_m": 112.5,
   "start_elevation_m": 22.97809962138419,
   "end_elevation_m": 23.615970720847326,
   "start_xy": [
    426966.0586780595,
    6923066.608981806
   ],
   "end_xy": [
    426963.23021544726,
    6923067.608881427
   ]
  }
 },
 "diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). Diagnostic use only: never a headline or ranking value.",
 "quality_summary": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.03,
   "obstruction_max_height_m": 9.27,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "11607044e533e467c5c753c7fffd2d09371a473e",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:8c94015b54267da4",
   "python": "3.14.4",
   "numpy": "2.5.3",
   "rasterio": "1.5.1",
   "pyproj": "3.8.0",
   "laspy": "2.7.0",
   "shapely": "2.1.2",
   "pyosmium": "4.3.1",
   "libosmium": "2.23.1",
   "gdal": "3.12.4",
   "proj": "9.8.1",
   "run_id": "fr-no2",
   "road_pbf": "block-batch-fr-no2.osm.pbf",
   "region_key": "france",
   "crs": "EPSG:2154",
   "elevation_provider_key": "ign-lidarhd",
   "tile_index": "wms-grid",
   "authority": "bdtopo",
   "registry_pbf": "france-vosges-2026-09-16.osm.pbf",
   "tile_index_snapshot": "sha256:396cc16291f947a7"
  },
  "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:2154",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/fr/ign-lidarhd_dtm_E425-N6922_0m5@22LHDFD-2025-09-19.tif",
   "data/cache/fr/ign-lidarhd_dtm_E425-N6923_0m5@22LHDFD-2025-09-19.tif",
   "data/cache/fr/ign-lidarhd_dtm_E426-N6922_0m5@22LHDFD-2025-09-19.tif",
   "data/cache/fr/ign-lidarhd_dtm_E426-N6923_0m5@22LHDFD-2025-09-19.tif",
   "data/cache/fr/ign-lidarhd_dtm_E427-N6922_0m5@22LHDFD-2025-09-19.tif",
   "data/cache/fr/ign-lidarhd_dtm_E427-N6923_0m5@22LHDFD-2025-09-19.tif"
  ],
  "calculated_at": "2026-09-26T01:24:19+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-no2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-no2",
  "elevation_provider": "IGN LiDAR HD MNT 0.5 m",
  "elevation_licence": "Licence Ouverte / Open Licence 2.0 (Etalab) \u2014 \u00a9 IGN, LiDAR HD (MNT/MNS), data.geopf.fr; reproduction autoris\u00e9e avec mention de la source et de la date",
  "elevation_dataset": "LiDAR HD \u2014 MNT (sol) et MNS (surface), 0,50 m (Institut national de l'information g\u00e9ographique et foresti\u00e8re), RGF93 / Lambert-93 EPSG:2154, altitudes IGN69",
  "elevation_vertical_datum": "IGN69",
  "elevation_tile_ids": [
   "E425-N6922",
   "E425-N6923",
   "E426-N6922",
   "E426-N6923",
   "E427-N6922",
   "E427-N6923"
  ],
  "elevation_blocks": [
   "22LHDFD@2025-09-19"
  ],
  "ign_dalles": [
   "LHD_FXX_0425_6923_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0425_6924_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0426_6923_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0426_6924_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0427_6923_MNT_O_0M50_LAMB93_IGN69",
   "LHD_FXX_0427_6924_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHDFD"
  ],
  "ign_editions": [
   "2025-09-19"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0425_6923_MNT_O_0M50_LAMB93_IGN69": "2025-09-19",
   "LHD_FXX_0425_6924_MNT_O_0M50_LAMB93_IGN69": "2025-09-19",
   "LHD_FXX_0426_6923_MNT_O_0M50_LAMB93_IGN69": "2025-09-19",
   "LHD_FXX_0426_6924_MNT_O_0M50_LAMB93_IGN69": "2025-09-19",
   "LHD_FXX_0427_6923_MNT_O_0M50_LAMB93_IGN69": "2025-09-19",
   "LHD_FXX_0427_6924_MNT_O_0M50_LAMB93_IGN69": "2025-09-19"
  },
  "route_cut_m": 490.4,
  "climb_origin": "discovered",
  "structure_own_ways": 3,
  "carriageway": {
   "stations": 26,
   "stations_resolved": 26,
   "width_median_m": 5.25,
   "width_p10_m": 4.0,
   "width_min_m": 3.25,
   "width_max_m": 10.25,
   "bounded_share": 0.385,
   "unbounded_share": 0.615,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.38,
   "window_m": [
    99.0,
    124.0
   ],
   "width_at_max25_m": 4.5,
   "window_stations": 7,
   "single_track": false,
   "single_track_rule": "PROVISIONAL (2026-09-15): width_p10_m <= 3.0 m with bounded_share >= 0.6; recorded, not a rule",
   "status": "ok",
   "source": "dtm",
   "station_m": 25.0,
   "window_station_m": 5.0,
   "halfwidth_m": 6.0,
   "step_m": 0.25,
   "level_tol_m": 0.12,
   "break_min_m": 0.3,
   "stations_failed": 0,
   "hedge_to_hedge": {
    "stations": 26,
    "stations_resolved": 26,
    "width_median_m": 5.38,
    "width_p10_m": 3.0,
    "width_min_m": 1.0,
    "width_max_m": 12.0,
    "bounded_share": 0.769,
    "unbounded_share": 0.231,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.75,
    "window_m": [
     99.0,
     124.0
    ],
    "width_at_max25_m": 5.5,
    "window_stations": 7,
    "status": "ok",
    "source": "dsm",
    "station_m": 25.0,
    "window_station_m": 5.0,
    "halfwidth_m": 6.0,
    "step_m": 0.25,
    "level_tol_m": 0.5,
    "break_min_m": 0.3,
    "stations_failed": 0
   }
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Port-en-Bessin-Huppain",
  "county": "Calvados",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}