{
 "ocl_version": "0.1.0",
 "name": "Chemin de L'\u00c9toile du Matin",
 "slug": "chemin-de-l-etoile-du-matin",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.6314452426559,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 101.0,
   "end_distance_m": 103.0,
   "start_elevation_m": 679.1572144136328,
   "end_elevation_m": 679.5898433184859,
   "min_gradient_pct": -2.018018889771156
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 21.540753422618764,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 100.0,
   "end_distance_m": 103.0,
   "start_elevation_m": 678.9436207158074,
   "end_elevation_m": 679.5898433184859,
   "min_gradient_pct": -0.4304493827551899
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 21.413179810920155,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 107.0,
   "end_distance_m": 112.0,
   "start_elevation_m": 680.4193558149657,
   "end_elevation_m": 681.4900148055117,
   "min_gradient_pct": 1.2852981457444912
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.241820736375985,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 102.0,
   "end_distance_m": 112.0,
   "start_elevation_m": 679.3658327318741,
   "end_elevation_m": 681.4900148055117,
   "min_gradient_pct": 4.503025677054211
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.866160242901515,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 95.0,
   "end_distance_m": 115.0,
   "start_elevation_m": 677.9308043305217,
   "end_elevation_m": 682.104036379102,
   "min_gradient_pct": 8.372426361265752
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.738720561622358,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 89.0,
   "end_distance_m": 114.0,
   "start_elevation_m": 676.7082768202804,
   "end_elevation_m": 681.892956960686,
   "min_gradient_pct": 10.360908791671136
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.124106892344116,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 69.0,
   "end_distance_m": 119.0,
   "start_elevation_m": 672.7957678410164,
   "end_elevation_m": 682.8578212871885,
   "min_gradient_pct": 11.834881762325267
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.500673750933856,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 34.0,
   "end_distance_m": 134.0,
   "start_elevation_m": 666.9097132075605,
   "end_elevation_m": 685.4103869584943,
   "min_gradient_pct": 12.485183956085848
  }
 ],
 "shape": {
  "ascent_concentration": 0.331,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 211.0,
  "shape_class": "sustained"
 },
 "length_m": 225.703337475762,
 "start_elevation_m": 662.7459869970738,
 "end_elevation_m": 696.5584480761546,
 "endpoint_gain_m": 33.81246107908078,
 "overall_gradient_pct": 14.980930923412622,
 "accumulated_ascent_m": 33.87318386456923,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 21.413179810920155,
   "start_distance_m": 107.0,
   "end_distance_m": 112.0,
   "midpoint_distance_m": 109.5,
   "start_elevation_m": 680.4193558149657,
   "end_elevation_m": 681.4900148055117,
   "start_xy": [
    2554711.3542984305,
    1148250.159324392
   ],
   "end_xy": [
    2554709.9090359984,
    1148254.945890646
   ]
  },
  "max_10m": {
   "gradient_pct": 21.241820736375985,
   "start_distance_m": 102.0,
   "end_distance_m": 112.0,
   "midpoint_distance_m": 107.0,
   "start_elevation_m": 679.3658327318741,
   "end_elevation_m": 681.4900148055117,
   "start_xy": [
    2554712.799560862,
    1148245.372758138
   ],
   "end_xy": [
    2554709.9090359984,
    1148254.945890646
   ]
  },
  "max_20m": {
   "gradient_pct": 20.866160242901515,
   "start_distance_m": 95.0,
   "end_distance_m": 115.0,
   "midpoint_distance_m": 105.0,
   "start_elevation_m": 677.9308043305217,
   "end_elevation_m": 682.104036379102,
   "start_xy": [
    2554714.8229282666,
    1148238.6715653825
   ],
   "end_xy": [
    2554708.9776013633,
    1148257.7924182245
   ]
  },
  "max_25m": {
   "gradient_pct": 20.738720561622358,
   "start_distance_m": 89.0,
   "end_distance_m": 114.0,
   "midpoint_distance_m": 101.5,
   "start_elevation_m": 676.7082768202804,
   "end_elevation_m": 681.892956960686,
   "start_xy": [
    2554716.5572431847,
    1148232.9276858778
   ],
   "end_xy": [
    2554709.330931026,
    1148256.8605171475
   ]
  },
  "max_50m": {
   "gradient_pct": 20.124106892344116,
   "start_distance_m": 69.0,
   "end_distance_m": 119.0,
   "midpoint_distance_m": 94.0,
   "start_elevation_m": 672.7957678410164,
   "end_elevation_m": 682.8578212871885,
   "start_xy": [
    2554722.3693500934,
    1148213.790856355
   ],
   "end_xy": [
    2554707.2027017185,
    1148261.3770704044
   ]
  },
  "max_100m": {
   "gradient_pct": 18.500673750933856,
   "start_distance_m": 34.0,
   "end_distance_m": 134.0,
   "midpoint_distance_m": 84.0,
   "start_elevation_m": 666.9097132075605,
   "end_elevation_m": 685.4103869584943,
   "start_xy": [
    2554724.9153472558,
    1148179.6636446803
   ],
   "end_xy": [
    2554700.276111995,
    1148274.6176323192
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 1.2852981457444912,
   "start_distance_m": 211.0,
   "end_distance_m": 216.0,
   "midpoint_distance_m": 213.5,
   "start_elevation_m": 695.5337965850752,
   "end_elevation_m": 695.5980614923624,
   "start_xy": [
    2554634.05784369,
    1148312.5015928745
   ],
   "end_xy": [
    2554629.3778112186,
    1148310.7689534016
   ]
  },
  "min_10m": {
   "gradient_pct": 4.503025677054211,
   "start_distance_m": 211.0,
   "end_distance_m": 221.0,
   "midpoint_distance_m": 216.0,
   "start_elevation_m": 695.5337965850752,
   "end_elevation_m": 695.9840991527806,
   "start_xy": [
    2554634.05784369,
    1148312.5015928745
   ],
   "end_xy": [
    2554624.696529525,
    1148309.0123653153
   ]
  },
  "min_20m": {
   "gradient_pct": 8.372426361265752,
   "start_distance_m": 205.0,
   "end_distance_m": 225.0,
   "midpoint_distance_m": 215.0,
   "start_elevation_m": 694.7528751083332,
   "end_elevation_m": 696.4273603805864,
   "start_xy": [
    2554639.4255836536,
    1148309.820666229
   ],
   "end_xy": [
    2554620.95150417,
    1148307.6070948462
   ]
  },
  "min_25m": {
   "gradient_pct": 10.360908791671136,
   "start_distance_m": 200.0,
   "end_distance_m": 225.0,
   "midpoint_distance_m": 212.5,
   "start_elevation_m": 693.8371331826686,
   "end_elevation_m": 696.4273603805864,
   "start_xy": [
    2554643.8987002904,
    1148307.586560691
   ],
   "end_xy": [
    2554620.95150417,
    1148307.6070948462
   ]
  },
  "min_50m": {
   "gradient_pct": 11.834881762325267,
   "start_distance_m": 174.0,
   "end_distance_m": 224.0,
   "midpoint_distance_m": 199.0,
   "start_elevation_m": 690.3915299664386,
   "end_elevation_m": 696.3089708476012,
   "start_xy": [
    2554667.532565192,
    1148296.8067327347
   ],
   "end_xy": [
    2554621.887760509,
    1148307.9584124635
   ]
  },
  "min_100m": {
   "gradient_pct": 12.485183956085848,
   "start_distance_m": 125.0,
   "end_distance_m": 225.0,
   "midpoint_distance_m": 175.0,
   "start_elevation_m": 683.9421764245005,
   "end_elevation_m": 696.4273603805864,
   "start_xy": [
    2554704.540352251,
    1148266.754048674
   ],
   "end_xy": [
    2554620.95150417,
    1148307.6070948462
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.6314452426559,
   "start_distance_m": 101.0,
   "end_distance_m": 103.0,
   "midpoint_distance_m": 102.0,
   "start_elevation_m": 679.1572144136328,
   "end_elevation_m": 679.5898433184859,
   "start_xy": [
    2554713.0886133485,
    1148244.4154448872
   ],
   "end_xy": [
    2554712.5105083757,
    1148246.3300713887
   ]
  },
  "max_3m": {
   "gradient_pct": 21.540753422618764,
   "start_distance_m": 100.0,
   "end_distance_m": 103.0,
   "midpoint_distance_m": 101.5,
   "start_elevation_m": 678.9436207158074,
   "end_elevation_m": 679.5898433184859,
   "start_xy": [
    2554713.3776658345,
    1148243.4581316365
   ],
   "end_xy": [
    2554712.5105083757,
    1148246.3300713887
   ]
  }
 },
 "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": {
  "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:2056",
  "elevation_resolution_m": 0.5,
  "elevation_tiles": [
   "data/cache/ch/swissalti3d_2021_2554-1148_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-10T20:37:31+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/switzerland-2026-09-10-batch.osm.pbf",
  "osm_snapshot": "",
  "run_id": "ch-run6-260910",
  "elevation_provider": "swisstopo swissALTI3D",
  "elevation_licence": "swisstopo open government data (OGD): free use, attribution '\u00a9 swisstopo' \u2014 https://www.swisstopo.admin.ch/en/terms-and-conditions",
  "elevation_dataset": "swissALTI3D 0.5 m DTM (Federal Office of Topography swisstopo)",
  "elevation_tile_ids": [
   "2554-1148"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Jongny",
  "county": "Vaud",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}