{
 "ocl_version": "0.1.0",
 "name": "Via Sut l'Alp",
 "slug": "via-sut-l-alp",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 20.43469893847032,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2579.0,
   "end_distance_m": 2581.0,
   "start_elevation_m": 1713.9133235840204,
   "end_elevation_m": 1714.3220175627898,
   "min_gradient_pct": -8.321309783650577
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 20.233707698359165,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2583.0,
   "end_distance_m": 2586.0,
   "start_elevation_m": 1714.6998419554202,
   "end_elevation_m": 1715.306853186371,
   "min_gradient_pct": -8.330396435546087
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 19.966687192140853,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2576.0,
   "end_distance_m": 2581.0,
   "start_elevation_m": 1713.3236832031828,
   "end_elevation_m": 1714.3220175627898,
   "min_gradient_pct": -8.005460848244184
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 19.869678396771633,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2577.0,
   "end_distance_m": 2587.0,
   "start_elevation_m": 1713.5120210235189,
   "end_elevation_m": 1715.498988863196,
   "min_gradient_pct": -7.865614137983812
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 19.115018493989737,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2571.0,
   "end_distance_m": 2591.0,
   "start_elevation_m": 1712.3656149179133,
   "end_elevation_m": 1716.1886186167112,
   "min_gradient_pct": -7.045950502867981
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 18.815169934681762,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2571.0,
   "end_distance_m": 2596.0,
   "start_elevation_m": 1712.3656149179133,
   "end_elevation_m": 1717.0694074015837,
   "min_gradient_pct": -6.564293878883291
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.316783694607693,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2562.0,
   "end_distance_m": 2612.0,
   "start_elevation_m": 1711.038627951943,
   "end_elevation_m": 1719.6970197992468,
   "min_gradient_pct": -2.680986614093854
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 12.726151717692119,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2370.0,
   "end_distance_m": 2470.0,
   "start_elevation_m": 1690.617815272022,
   "end_elevation_m": 1703.343966989714,
   "min_gradient_pct": 2.272954068082754
  }
 ],
 "shape": {
  "ascent_concentration": 0.267,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 279.0,
  "shape_class": "sustained"
 },
 "length_m": 2614.447615157522,
 "start_elevation_m": 1451.9358139697279,
 "end_elevation_m": 1719.9775414902354,
 "endpoint_gain_m": 268.0417275205075,
 "overall_gradient_pct": 10.252327335476478,
 "accumulated_ascent_m": 270.0410963617728,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 19.966687192140853,
   "start_distance_m": 2576.0,
   "end_distance_m": 2581.0,
   "midpoint_distance_m": 2578.5,
   "start_elevation_m": 1713.3236832031828,
   "end_elevation_m": 1714.3220175627898,
   "start_xy": [
    2726341.990983355,
    1169088.402127326
   ],
   "end_xy": [
    2726341.2000427353,
    1169083.465082366
   ]
  },
  "max_10m": {
   "gradient_pct": 19.869678396771633,
   "start_distance_m": 2577.0,
   "end_distance_m": 2587.0,
   "midpoint_distance_m": 2582.0,
   "start_elevation_m": 1713.5120210235189,
   "end_elevation_m": 1715.498988863196,
   "start_xy": [
    2726341.832795231,
    1169087.4147183339
   ],
   "end_xy": [
    2726340.250913992,
    1169077.5406284141
   ]
  },
  "max_20m": {
   "gradient_pct": 19.115018493989737,
   "start_distance_m": 2571.0,
   "end_distance_m": 2591.0,
   "midpoint_distance_m": 2581.0,
   "start_elevation_m": 1712.3656149179133,
   "end_elevation_m": 1716.1886186167112,
   "start_xy": [
    2726342.7819239744,
    1169093.3391722857
   ],
   "end_xy": [
    2726339.6181614962,
    1169073.590992446
   ]
  },
  "max_25m": {
   "gradient_pct": 18.815169934681762,
   "start_distance_m": 2571.0,
   "end_distance_m": 2596.0,
   "midpoint_distance_m": 2583.5,
   "start_elevation_m": 1712.3656149179133,
   "end_elevation_m": 1717.0694074015837,
   "start_xy": [
    2726342.7819239744,
    1169093.3391722857
   ],
   "end_xy": [
    2726338.8272208767,
    1169068.653947486
   ]
  },
  "max_50m": {
   "gradient_pct": 17.316783694607693,
   "start_distance_m": 2562.0,
   "end_distance_m": 2612.0,
   "midpoint_distance_m": 2587.0,
   "start_elevation_m": 1711.038627951943,
   "end_elevation_m": 1719.6970197992468,
   "start_xy": [
    2726344.2056170893,
    1169102.2258532138
   ],
   "end_xy": [
    2726332.1859782552,
    1169054.3239585191
   ]
  },
  "max_100m": {
   "gradient_pct": 12.726151717692119,
   "start_distance_m": 2370.0,
   "end_distance_m": 2470.0,
   "midpoint_distance_m": 2420.0,
   "start_elevation_m": 1690.617815272022,
   "end_elevation_m": 1703.343966989714,
   "start_xy": [
    2726443.2543086247,
    1169038.464521496
   ],
   "end_xy": [
    2726375.352228592,
    1169104.909571258
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -8.005460848244184,
   "start_distance_m": 92.0,
   "end_distance_m": 97.0,
   "midpoint_distance_m": 94.5,
   "start_elevation_m": 1458.3659116119693,
   "end_elevation_m": 1457.965638569557,
   "start_xy": [
    2727212.4723300356,
    1168650.9187804514
   ],
   "end_xy": [
    2727208.432346543,
    1168647.974265152
   ]
  },
  "min_10m": {
   "gradient_pct": -7.865614137983812,
   "start_distance_m": 90.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 95.0,
   "start_elevation_m": 1458.5198675114634,
   "end_elevation_m": 1457.733306097665,
   "start_xy": [
    2727214.179220346,
    1168651.9611457759
   ],
   "end_xy": [
    2727206.015213491,
    1168646.1973386453
   ]
  },
  "min_20m": {
   "gradient_pct": -7.045950502867981,
   "start_distance_m": 87.0,
   "end_distance_m": 107.0,
   "midpoint_distance_m": 97.0,
   "start_elevation_m": 1458.6792147961462,
   "end_elevation_m": 1457.2700246955726,
   "start_xy": [
    2727216.7395558106,
    1168653.5246937622
   ],
   "end_xy": [
    2727200.4582075845,
    1168641.9430648314
   ]
  },
  "min_25m": {
   "gradient_pct": -6.564293878883291,
   "start_distance_m": 85.0,
   "end_distance_m": 110.0,
   "midpoint_distance_m": 97.5,
   "start_elevation_m": 1458.7653014931989,
   "end_elevation_m": 1457.124228023478,
   "start_xy": [
    2727218.4464461207,
    1168654.5670590864
   ],
   "end_xy": [
    2727198.1165336375,
    1168640.067814681
   ]
  },
  "min_50m": {
   "gradient_pct": -2.680986614093854,
   "start_distance_m": 75.0,
   "end_distance_m": 125.0,
   "midpoint_distance_m": 100.0,
   "start_elevation_m": 1458.7040989516522,
   "end_elevation_m": 1457.3636056446053,
   "start_xy": [
    2727227.27485751,
    1168659.2568323025
   ],
   "end_xy": [
    2727187.405070116,
    1168629.5890470867
   ]
  },
  "min_100m": {
   "gradient_pct": 2.272954068082754,
   "start_distance_m": 67.0,
   "end_distance_m": 167.0,
   "midpoint_distance_m": 117.0,
   "start_elevation_m": 1458.171376469959,
   "end_elevation_m": 1460.4443305380416,
   "start_xy": [
    2727234.2475724416,
    1168663.1685824061
   ],
   "end_xy": [
    2727159.81227406,
    1168597.9300153647
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 20.43469893847032,
   "start_distance_m": 2579.0,
   "end_distance_m": 2581.0,
   "midpoint_distance_m": 2580.0,
   "start_elevation_m": 1713.9133235840204,
   "end_elevation_m": 1714.3220175627898,
   "start_xy": [
    2726341.516418983,
    1169085.4399003498
   ],
   "end_xy": [
    2726341.2000427353,
    1169083.465082366
   ]
  },
  "max_3m": {
   "gradient_pct": 20.233707698359165,
   "start_distance_m": 2583.0,
   "end_distance_m": 2586.0,
   "midpoint_distance_m": 2584.5,
   "start_elevation_m": 1714.6998419554202,
   "end_elevation_m": 1715.306853186371,
   "start_xy": [
    2726340.8836664874,
    1169081.490264382
   ],
   "end_xy": [
    2726340.409102116,
    1169078.528037406
   ]
  }
 },
 "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_2023_2726-1168_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2023_2726-1169_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2023_2727-1168_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-10T20:32:22+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": [
   "2726-1168",
   "2726-1169",
   "2727-1168"
  ],
  "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": "Lumnezia",
  "county": "Graub\u00fcnden/Grischun/Grigioni",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}