{
 "ocl_version": "0.1.0",
 "name": "Boulevard des Lilas Blancs",
 "slug": "boulevard-des-lilas-blancs",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.74967344154544,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 278.0,
   "end_distance_m": 280.0,
   "start_elevation_m": 173.84418294441883,
   "end_elevation_m": 174.35917641324974,
   "min_gradient_pct": -0.46467922347801505
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.39867794378665,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 277.0,
   "end_distance_m": 280.0,
   "start_elevation_m": 173.59721607493614,
   "end_elevation_m": 174.35917641324974,
   "min_gradient_pct": -0.006636034394584082
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 25.15992087448808,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 275.0,
   "end_distance_m": 280.0,
   "start_elevation_m": 173.10118036952534,
   "end_elevation_m": 174.35917641324974,
   "min_gradient_pct": 0.25558138071460235
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 24.69180400991945,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 273.0,
   "end_distance_m": 283.0,
   "start_elevation_m": 172.6187023844844,
   "end_elevation_m": 175.08788278547635,
   "min_gradient_pct": 0.4603095674190172
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.936400235942727,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 269.0,
   "end_distance_m": 289.0,
   "start_elevation_m": 171.72060360267005,
   "end_elevation_m": 176.5078836498586,
   "min_gradient_pct": 0.7893726152857994
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 23.470576870694686,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 267.0,
   "end_distance_m": 292.0,
   "start_elevation_m": 171.28375780297978,
   "end_elevation_m": 177.15140202065345,
   "min_gradient_pct": 0.8286512954078944
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.681427265550496,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 249.0,
   "end_distance_m": 299.0,
   "start_elevation_m": 168.41436630131847,
   "end_elevation_m": 178.25507993409371,
   "min_gradient_pct": 1.340171241761709
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 14.461997692686168,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 241.0,
   "end_distance_m": 341.0,
   "start_elevation_m": 167.65033606576748,
   "end_elevation_m": 182.11233375845364,
   "min_gradient_pct": 4.585880006819792
  }
 ],
 "shape": {
  "ascent_concentration": 0.417,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 74.0,
  "shape_class": "sustained"
 },
 "length_m": 421.464741440091,
 "start_elevation_m": 149.0791954956016,
 "end_elevation_m": 185.10664399706772,
 "endpoint_gain_m": 36.027448501466125,
 "overall_gradient_pct": 8.548152421567922,
 "accumulated_ascent_m": 36.07137329089639,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 25.15992087448808,
   "start_distance_m": 275.0,
   "end_distance_m": 280.0,
   "midpoint_distance_m": 277.5,
   "start_elevation_m": 173.10118036952534,
   "end_elevation_m": 174.35917641324974,
   "start_xy": [
    899219.0234380625,
    6253598.197821248
   ],
   "end_xy": [
    899223.6681108171,
    6253596.346601379
   ]
  },
  "max_10m": {
   "gradient_pct": 24.69180400991945,
   "start_distance_m": 273.0,
   "end_distance_m": 283.0,
   "midpoint_distance_m": 278.0,
   "start_elevation_m": 172.6187023844844,
   "end_elevation_m": 175.08788278547635,
   "start_xy": [
    899217.1655689607,
    6253598.938309195
   ],
   "end_xy": [
    899226.4549144699,
    6253595.235869458
   ]
  },
  "max_20m": {
   "gradient_pct": 23.936400235942727,
   "start_distance_m": 269.0,
   "end_distance_m": 289.0,
   "midpoint_distance_m": 279.0,
   "start_elevation_m": 171.72060360267005,
   "end_elevation_m": 176.5078836498586,
   "start_xy": [
    899213.4498307571,
    6253600.419285091
   ],
   "end_xy": [
    899231.742580907,
    6253592.401976029
   ]
  },
  "max_25m": {
   "gradient_pct": 23.470576870694686,
   "start_distance_m": 267.0,
   "end_distance_m": 292.0,
   "midpoint_distance_m": 279.5,
   "start_elevation_m": 171.28375780297978,
   "end_elevation_m": 177.15140202065345,
   "start_xy": [
    899211.5919616552,
    6253601.159773039
   ],
   "end_xy": [
    899234.3833997877,
    6253590.978573192
   ]
  },
  "max_50m": {
   "gradient_pct": 19.681427265550496,
   "start_distance_m": 249.0,
   "end_distance_m": 299.0,
   "midpoint_distance_m": 274.0,
   "start_elevation_m": 168.41436630131847,
   "end_elevation_m": 178.25507993409371,
   "start_xy": [
    899194.8711397388,
    6253607.824164567
   ],
   "end_xy": [
    899240.1155543093,
    6253587.031004537
   ]
  },
  "max_100m": {
   "gradient_pct": 14.461997692686168,
   "start_distance_m": 241.0,
   "end_distance_m": 341.0,
   "midpoint_distance_m": 291.0,
   "start_elevation_m": 167.65033606576748,
   "end_elevation_m": 182.11233375845364,
   "start_xy": [
    899187.4396633315,
    6253610.786116357
   ],
   "end_xy": [
    899272.0089128132,
    6253559.703116039
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.25558138071460235,
   "start_distance_m": 397.0,
   "end_distance_m": 402.0,
   "midpoint_distance_m": 399.5,
   "start_elevation_m": 184.90428669056115,
   "end_elevation_m": 184.91706575959688,
   "start_xy": [
    899314.3809234783,
    6253523.088737549
   ],
   "end_xy": [
    899318.1641387162,
    6253519.819596613
   ]
  },
  "min_10m": {
   "gradient_pct": 0.4603095674190172,
   "start_distance_m": 392.0,
   "end_distance_m": 402.0,
   "midpoint_distance_m": 397.0,
   "start_elevation_m": 184.87103480285498,
   "end_elevation_m": 184.91706575959688,
   "start_xy": [
    899310.5977082403,
    6253526.357878486
   ],
   "end_xy": [
    899318.1641387162,
    6253519.819596613
   ]
  },
  "min_20m": {
   "gradient_pct": 0.7893726152857994,
   "start_distance_m": 388.0,
   "end_distance_m": 408.0,
   "midpoint_distance_m": 398.0,
   "start_elevation_m": 184.817730292105,
   "end_elevation_m": 184.97560481516217,
   "start_xy": [
    899307.5711360499,
    6253528.973191235
   ],
   "end_xy": [
    899322.7039970018,
    6253515.896627489
   ]
  },
  "min_25m": {
   "gradient_pct": 0.8286512954078944,
   "start_distance_m": 380.0,
   "end_distance_m": 405.0,
   "midpoint_distance_m": 392.5,
   "start_elevation_m": 184.73396512680074,
   "end_elevation_m": 184.9411279506527,
   "start_xy": [
    899301.5179916691,
    6253534.203816733
   ],
   "end_xy": [
    899320.434067859,
    6253517.858112051
   ]
  },
  "min_50m": {
   "gradient_pct": 1.340171241761709,
   "start_distance_m": 371.0,
   "end_distance_m": 421.0,
   "midpoint_distance_m": 396.0,
   "start_elevation_m": 184.42497977660062,
   "end_elevation_m": 185.09506539748148,
   "start_xy": [
    899294.7082042409,
    6253540.088270419
   ],
   "end_xy": [
    899332.5403566204,
    6253507.396861054
   ]
  },
  "min_100m": {
   "gradient_pct": 4.585880006819792,
   "start_distance_m": 321.0,
   "end_distance_m": 421.0,
   "midpoint_distance_m": 371.0,
   "start_elevation_m": 180.50918539066168,
   "end_elevation_m": 185.09506539748148,
   "start_xy": [
    899256.8219765173,
    6253572.716834739
   ],
   "end_xy": [
    899332.5403566204,
    6253507.396861054
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.74967344154544,
   "start_distance_m": 278.0,
   "end_distance_m": 280.0,
   "midpoint_distance_m": 279.0,
   "start_elevation_m": 173.84418294441883,
   "end_elevation_m": 174.35917641324974,
   "start_xy": [
    899221.8102417153,
    6253597.087089327
   ],
   "end_xy": [
    899223.6681108171,
    6253596.346601379
   ]
  },
  "max_3m": {
   "gradient_pct": 25.39867794378665,
   "start_distance_m": 277.0,
   "end_distance_m": 280.0,
   "midpoint_distance_m": 278.5,
   "start_elevation_m": 173.59721607493614,
   "end_elevation_m": 174.35917641324974,
   "start_xy": [
    899220.8813071643,
    6253597.4573333
   ],
   "end_xy": [
    899223.6681108171,
    6253596.346601379
   ]
  }
 },
 "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": 0.066,
   "obstruction_max_height_m": 13.31,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "41205ec4649bb0a4093af76ff34281a5d9a13832",
   "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-pr3",
   "road_pbf": "block-batch-fr-pr3.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:ba95a0bf562c86eb"
  },
  "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_E899-N6253_0m5@21LHD7PQ-2025-03-14.tif"
  ],
  "calculated_at": "2026-09-25T09:17:20+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-pr3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-pr3",
  "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": [
   "E899-N6253"
  ],
  "elevation_blocks": [
   "21LHD7PQ@2025-03-14"
  ],
  "ign_dalles": [
   "LHD_FXX_0899_6254_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "21LHD7PQ"
  ],
  "ign_editions": [
   "2025-03-14"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_0899_6254_MNT_O_0M50_LAMB93_IGN69": "2025-03-14"
  },
  "climb_origin": "discovered",
  "structure_own_ways": 5,
  "carriageway": {
   "stations": 23,
   "stations_resolved": 23,
   "width_median_m": 8.75,
   "width_p10_m": 7.35,
   "width_min_m": 4.75,
   "width_max_m": 11.0,
   "bounded_share": 0.261,
   "unbounded_share": 0.739,
   "confidence_median": 0.0,
   "width_median_bounded_m": 8.38,
   "window_m": [
    267.0,
    292.0
   ],
   "width_at_max25_m": 8.25,
   "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": 23,
    "stations_resolved": 23,
    "width_median_m": 8.0,
    "width_p10_m": 3.4,
    "width_min_m": 0.75,
    "width_max_m": 12.0,
    "bounded_share": 0.826,
    "unbounded_share": 0.174,
    "confidence_median": 1.0,
    "width_median_bounded_m": 7.75,
    "window_m": [
     267.0,
     292.0
    ],
    "width_at_max25_m": 8.0,
    "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": "Marseille",
  "county": "Bouches-du-Rh\u00f4ne",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}