{
 "ocl_version": "0.1.0",
 "name": "Mont\u00e9e des Issards",
 "slug": "montee-des-issards",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 52.690554431940484,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 193.0,
   "end_distance_m": 195.0,
   "start_elevation_m": 169.48701210235654,
   "end_elevation_m": 170.54082319099535,
   "min_gradient_pct": -0.8155798784201806
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 47.3322550644743,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 192.0,
   "end_distance_m": 195.0,
   "start_elevation_m": 169.12085553906113,
   "end_elevation_m": 170.54082319099535,
   "min_gradient_pct": -0.8496420726923285
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 41.30739776830694,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 191.0,
   "end_distance_m": 196.0,
   "start_elevation_m": 168.79461946168055,
   "end_elevation_m": 170.8599893500959,
   "min_gradient_pct": -0.5877759237017699
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 35.75349941632453,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 189.0,
   "end_distance_m": 199.0,
   "start_elevation_m": 168.19120111884894,
   "end_elevation_m": 171.7665510604814,
   "min_gradient_pct": 0.13553868552435233
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 33.77821878245612,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 190.0,
   "end_distance_m": 210.0,
   "start_elevation_m": 168.49668203102937,
   "end_elevation_m": 175.2523257875206,
   "min_gradient_pct": 1.126941497622198
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 32.74623344971735,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 189.0,
   "end_distance_m": 214.0,
   "start_elevation_m": 168.19120111884894,
   "end_elevation_m": 176.37775948127828,
   "min_gradient_pct": 1.8405023043360416
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 30.623189669693488,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 166.0,
   "end_distance_m": 216.0,
   "start_elevation_m": 161.61551711900594,
   "end_elevation_m": 176.9271119538527,
   "min_gradient_pct": 4.993460166717568
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 26.816141943465883,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 122.0,
   "end_distance_m": 222.0,
   "start_elevation_m": 151.48935611451935,
   "end_elevation_m": 178.30549805798523,
   "min_gradient_pct": 8.74891215086356
  }
 ],
 "shape": {
  "ascent_concentration": 0.448,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 170.0,
  "shape_class": "sustained"
 },
 "length_m": 235.754157427191,
 "start_elevation_m": 139.47606681641318,
 "end_elevation_m": 178.8307598906234,
 "endpoint_gain_m": 39.35469307421022,
 "overall_gradient_pct": 16.69310671069048,
 "accumulated_ascent_m": 39.408225877472404,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 41.30739776830694,
   "start_distance_m": 191.0,
   "end_distance_m": 196.0,
   "midpoint_distance_m": 193.5,
   "start_elevation_m": 168.79461946168055,
   "end_elevation_m": 170.8599893500959,
   "start_xy": [
    1026789.8368094837,
    6283745.10708307
   ],
   "end_xy": [
    1026786.0556769024,
    6283748.378632612
   ]
  },
  "max_10m": {
   "gradient_pct": 35.75349941632453,
   "start_distance_m": 189.0,
   "end_distance_m": 199.0,
   "midpoint_distance_m": 194.0,
   "start_elevation_m": 168.19120111884894,
   "end_elevation_m": 171.7665510604814,
   "start_xy": [
    1026791.3492625162,
    6283743.798463253
   ],
   "end_xy": [
    1026783.7869973535,
    6283750.341562336
   ]
  },
  "max_20m": {
   "gradient_pct": 33.77821878245612,
   "start_distance_m": 190.0,
   "end_distance_m": 210.0,
   "midpoint_distance_m": 200.0,
   "start_elevation_m": 168.49668203102937,
   "end_elevation_m": 175.2523257875206,
   "start_xy": [
    1026790.593036,
    6283744.452773161
   ],
   "end_xy": [
    1026774.8059216758,
    6283756.619077487
   ]
  },
  "max_25m": {
   "gradient_pct": 32.74623344971735,
   "start_distance_m": 189.0,
   "end_distance_m": 214.0,
   "midpoint_distance_m": 201.5,
   "start_elevation_m": 168.19120111884894,
   "end_elevation_m": 176.37775948127828,
   "start_xy": [
    1026791.3492625162,
    6283743.798463253
   ],
   "end_xy": [
    1026771.0038268853,
    6283757.063804682
   ]
  },
  "max_50m": {
   "gradient_pct": 30.623189669693488,
   "start_distance_m": 166.0,
   "end_distance_m": 216.0,
   "midpoint_distance_m": 191.0,
   "start_elevation_m": 161.61551711900594,
   "end_elevation_m": 176.9271119538527,
   "start_xy": [
    1026807.1530635344,
    6283727.169534598
   ],
   "end_xy": [
    1026769.011856531,
    6283756.8847680725
   ]
  },
  "max_100m": {
   "gradient_pct": 26.816141943465883,
   "start_distance_m": 122.0,
   "end_distance_m": 222.0,
   "midpoint_distance_m": 172.0,
   "start_elevation_m": 151.48935611451935,
   "end_elevation_m": 178.30549805798523,
   "start_xy": [
    1026839.1634361775,
    6283697.022784534
   ],
   "end_xy": [
    1026764.354170325,
    6283753.71834153
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -0.5877759237017699,
   "start_distance_m": 51.0,
   "end_distance_m": 56.0,
   "midpoint_distance_m": 53.5,
   "start_elevation_m": 142.42283852838557,
   "end_elevation_m": 142.39344973220048,
   "start_xy": [
    1026885.8317452811,
    6283648.777891571
   ],
   "end_xy": [
    1026888.1333678954,
    6283653.21664515
   ]
  },
  "min_10m": {
   "gradient_pct": 0.13553868552435233,
   "start_distance_m": 46.0,
   "end_distance_m": 56.0,
   "midpoint_distance_m": 51.0,
   "start_elevation_m": 142.37989586364804,
   "end_elevation_m": 142.39344973220048,
   "start_xy": [
    1026883.5301226669,
    6283644.339137991
   ],
   "end_xy": [
    1026888.1333678954,
    6283653.21664515
   ]
  },
  "min_20m": {
   "gradient_pct": 1.126941497622198,
   "start_distance_m": 39.0,
   "end_distance_m": 59.0,
   "midpoint_distance_m": 49.0,
   "start_elevation_m": 142.26289699417492,
   "end_elevation_m": 142.48828529369936,
   "start_xy": [
    1026880.3078510067,
    6283638.124882979
   ],
   "end_xy": [
    1026886.3604925998,
    6283655.292245775
   ]
  },
  "min_25m": {
   "gradient_pct": 1.8405023043360416,
   "start_distance_m": 35.0,
   "end_distance_m": 60.0,
   "midpoint_distance_m": 47.5,
   "start_elevation_m": 142.07529534315864,
   "end_elevation_m": 142.53542091924265,
   "start_xy": [
    1026878.4665529153,
    6283634.5738801155
   ],
   "end_xy": [
    1026885.611332974,
    6283655.954635279
   ]
  },
  "min_50m": {
   "gradient_pct": 4.993460166717568,
   "start_distance_m": 9.0,
   "end_distance_m": 59.0,
   "midpoint_distance_m": 34.0,
   "start_elevation_m": 139.99155521034058,
   "end_elevation_m": 142.48828529369936,
   "start_xy": [
    1026864.4486866958,
    6283612.6895390805
   ],
   "end_xy": [
    1026886.3604925998,
    6283655.292245775
   ]
  },
  "min_100m": {
   "gradient_pct": 8.74891215086356,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 139.47606681641318,
   "end_elevation_m": 148.22497896727674,
   "start_xy": [
    1026861.08,
    6283604.358
   ],
   "end_xy": [
    1026855.644947944,
    6283682.450215443
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 52.690554431940484,
   "start_distance_m": 193.0,
   "end_distance_m": 195.0,
   "midpoint_distance_m": 194.0,
   "start_elevation_m": 169.48701210235654,
   "end_elevation_m": 170.54082319099535,
   "start_xy": [
    1026788.3243564512,
    6283746.415702887
   ],
   "end_xy": [
    1026786.8119034186,
    6283747.724322703
   ]
  },
  "max_3m": {
   "gradient_pct": 47.3322550644743,
   "start_distance_m": 192.0,
   "end_distance_m": 195.0,
   "midpoint_distance_m": 193.5,
   "start_elevation_m": 169.12085553906113,
   "end_elevation_m": 170.54082319099535,
   "start_xy": [
    1026789.0805829675,
    6283745.761392978
   ],
   "end_xy": [
    1026786.8119034186,
    6283747.724322703
   ]
  }
 },
 "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": 0.063,
   "obstruction_max_height_m": 6.17,
   "flagged_windows_m": []
  },
  "review": [],
  "extent": [
   "may_start_earlier",
   "may_continue_beyond_end"
  ]
 },
 "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:2154",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/fr/ign-lidarhd_dtm_E1026-N6283_0m5.tif"
  ],
  "calculated_at": "2026-09-17T02:46:52+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps4.osm.pbf",
  "osm_snapshot": "",
  "run_id": "fr-alps4",
  "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": [
   "E1026-N6283"
  ],
  "elevation_blocks": [
   "22LHD6RQ@2025-03-13"
  ],
  "ign_dalles": [
   "LHD_FXX_1026_6284_MNT_O_0M50_LAMB93_IGN69"
  ],
  "ign_missions": [
   "22LHD6RQ"
  ],
  "ign_editions": [
   "2025-03-13"
  ],
  "ign_dsm_edition": {
   "LHD_FXX_1026_6284_MNT_O_0M50_LAMB93_IGN69": "2025-03-13"
  },
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list; own decks unmasked",
  "carriageway": {
   "stations": 16,
   "stations_resolved": 16,
   "width_median_m": 5.62,
   "width_p10_m": 2.5,
   "width_min_m": 1.25,
   "width_max_m": 9.25,
   "bounded_share": 0.25,
   "unbounded_share": 0.75,
   "confidence_median": 0.0,
   "width_median_bounded_m": 4.75,
   "window_m": [
    189.0,
    214.0
   ],
   "width_at_max25_m": 7.0,
   "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": 16,
    "stations_resolved": 16,
    "width_median_m": 4.62,
    "width_p10_m": 1.12,
    "width_min_m": 0.5,
    "width_max_m": 9.75,
    "bounded_share": 0.75,
    "unbounded_share": 0.25,
    "confidence_median": 1.0,
    "width_median_bounded_m": 3.5,
    "window_m": [
     189.0,
     214.0
    ],
    "width_at_max25_m": 5.0,
    "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": "Vallauris",
  "county": "Alpes-Maritimes",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}