{
 "ocl_version": "0.1.0",
 "name": "Via Nadro",
 "slug": "via-nadro-2",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 21.81132391687015,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1357.0,
   "end_distance_m": 1359.0,
   "start_elevation_m": 550.3993155275089,
   "end_elevation_m": 550.8355420058463,
   "min_gradient_pct": -2.4164735641846846
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 20.522444830714903,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1415.0,
   "end_distance_m": 1418.0,
   "start_elevation_m": 559.8777078810107,
   "end_elevation_m": 560.4933812259321,
   "min_gradient_pct": -1.5879676000717307
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 20.006612857162054,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1411.0,
   "end_distance_m": 1416.0,
   "start_elevation_m": 559.078863644117,
   "end_elevation_m": 560.079194286975,
   "min_gradient_pct": -1.193129232387946
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 19.617980905712784,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1411.0,
   "end_distance_m": 1421.0,
   "start_elevation_m": 559.078863644117,
   "end_elevation_m": 561.0406617346882,
   "min_gradient_pct": -0.16690743080800985
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 19.08800923698209,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1585.0,
   "end_distance_m": 1605.0,
   "start_elevation_m": 577.829198268199,
   "end_elevation_m": 581.6468001155954,
   "min_gradient_pct": 1.3031444954293647
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 18.801758425815933,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1585.0,
   "end_distance_m": 1610.0,
   "start_elevation_m": 577.829198268199,
   "end_elevation_m": 582.529637874653,
   "min_gradient_pct": 1.8707009424592798
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 17.636403755954916,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1377.0,
   "end_distance_m": 1427.0,
   "start_elevation_m": 553.2763000375242,
   "end_elevation_m": 562.0945019155016,
   "min_gradient_pct": 3.7108666268658226
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.723091529765156,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1329.0,
   "end_distance_m": 1429.0,
   "start_elevation_m": 545.6999496059506,
   "end_elevation_m": 562.4230411357157,
   "min_gradient_pct": 5.2439669984884745
  }
 ],
 "shape": {
  "ascent_concentration": 0.315,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 140.0,
  "shape_class": "sustained"
 },
 "length_m": 1820.6908314522848,
 "start_elevation_m": 424.98540621728074,
 "end_elevation_m": 608.4962544599811,
 "endpoint_gain_m": 183.51084824270032,
 "overall_gradient_pct": 10.079187804572058,
 "accumulated_ascent_m": 183.8802143544188,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 20.006612857162054,
   "start_distance_m": 1411.0,
   "end_distance_m": 1416.0,
   "midpoint_distance_m": 1413.5,
   "start_elevation_m": 559.078863644117,
   "end_elevation_m": 560.079194286975,
   "start_xy": [
    2731615.809265438,
    1123909.6202374815
   ],
   "end_xy": [
    2731611.0605298113,
    1123908.065161283
   ]
  },
  "max_10m": {
   "gradient_pct": 19.617980905712784,
   "start_distance_m": 1411.0,
   "end_distance_m": 1421.0,
   "midpoint_distance_m": 1416.0,
   "start_elevation_m": 559.078863644117,
   "end_elevation_m": 561.0406617346882,
   "start_xy": [
    2731615.809265438,
    1123909.6202374815
   ],
   "end_xy": [
    2731606.4606642094,
    1123906.105254029
   ]
  },
  "max_20m": {
   "gradient_pct": 19.08800923698209,
   "start_distance_m": 1585.0,
   "end_distance_m": 1605.0,
   "midpoint_distance_m": 1595.0,
   "start_elevation_m": 577.829198268199,
   "end_elevation_m": 581.6468001155954,
   "start_xy": [
    2731559.893230773,
    1123902.0313277652
   ],
   "end_xy": [
    2731540.6159725916,
    1123904.6019662858
   ]
  },
  "max_25m": {
   "gradient_pct": 18.801758425815933,
   "start_distance_m": 1585.0,
   "end_distance_m": 1610.0,
   "midpoint_distance_m": 1597.5,
   "start_elevation_m": 577.829198268199,
   "end_elevation_m": 582.529637874653,
   "start_xy": [
    2731559.893230773,
    1123902.0313277652
   ],
   "end_xy": [
    2731535.895702812,
    1123906.2509214724
   ]
  },
  "max_50m": {
   "gradient_pct": 17.636403755954916,
   "start_distance_m": 1377.0,
   "end_distance_m": 1427.0,
   "midpoint_distance_m": 1402.0,
   "start_elevation_m": 553.2763000375242,
   "end_elevation_m": 562.0945019155016,
   "start_xy": [
    2731649.1799743697,
    1123915.3612761432
   ],
   "end_xy": [
    2731601.4207574986,
    1123902.9046680266
   ]
  },
  "max_100m": {
   "gradient_pct": 16.723091529765156,
   "start_distance_m": 1329.0,
   "end_distance_m": 1429.0,
   "midpoint_distance_m": 1379.0,
   "start_elevation_m": 545.6999496059506,
   "end_elevation_m": 562.4230411357157,
   "start_xy": [
    2731624.3789604874,
    1123886.7314343771
   ],
   "end_xy": [
    2731599.800629714,
    1123901.7319847948
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.193129232387946,
   "start_distance_m": 3.0,
   "end_distance_m": 8.0,
   "midpoint_distance_m": 5.5,
   "start_elevation_m": 425.0322813766532,
   "end_elevation_m": 424.9726249150338,
   "start_xy": [
    2731431.277983242,
    1123636.042972672
   ],
   "end_xy": [
    2731436.2779553123,
    1123636.0262604586
   ]
  },
  "min_10m": {
   "gradient_pct": -0.16690743080800985,
   "start_distance_m": 1.0,
   "end_distance_m": 11.0,
   "midpoint_distance_m": 6.0,
   "start_elevation_m": 425.00764344293134,
   "end_elevation_m": 424.99095269985054,
   "start_xy": [
    2731429.277994414,
    1123636.0496575574
   ],
   "end_xy": [
    2731439.277938554,
    1123636.0162331306
   ]
  },
  "min_20m": {
   "gradient_pct": 1.3031444954293647,
   "start_distance_m": 65.0,
   "end_distance_m": 85.0,
   "midpoint_distance_m": 75.0,
   "start_elevation_m": 431.4818200509019,
   "end_elevation_m": 431.74244894998776,
   "start_xy": [
    2731486.4946735143,
    1123650.9183117957
   ],
   "end_xy": [
    2731469.1859269748,
    1123655.6155789872
   ]
  },
  "min_25m": {
   "gradient_pct": 1.8707009424592798,
   "start_distance_m": 65.0,
   "end_distance_m": 90.0,
   "midpoint_distance_m": 77.5,
   "start_elevation_m": 431.4818200509019,
   "end_elevation_m": 431.9494952865167,
   "start_xy": [
    2731486.4946735143,
    1123650.9183117957
   ],
   "end_xy": [
    2731464.319157224,
    1123656.7621182122
   ]
  },
  "min_50m": {
   "gradient_pct": 3.7108666268658226,
   "start_distance_m": 64.0,
   "end_distance_m": 114.0,
   "midpoint_distance_m": 89.0,
   "start_elevation_m": 431.4177195967506,
   "end_elevation_m": 433.2731529101835,
   "start_xy": [
    2731486.2668616506,
    1123649.9446066273
   ],
   "end_xy": [
    2731440.8197781313,
    1123661.5059680569
   ]
  },
  "min_100m": {
   "gradient_pct": 5.2439669984884745,
   "start_distance_m": 65.0,
   "end_distance_m": 165.0,
   "midpoint_distance_m": 115.0,
   "start_elevation_m": 431.4818200509019,
   "end_elevation_m": 436.72578704939036,
   "start_xy": [
    2731486.4946735143,
    1123650.9183117957
   ],
   "end_xy": [
    2731405.8139749505,
    1123670.6561558156
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 21.81132391687015,
   "start_distance_m": 1357.0,
   "end_distance_m": 1359.0,
   "midpoint_distance_m": 1358.0,
   "start_elevation_m": 550.3993155275089,
   "end_elevation_m": 550.8355420058463,
   "start_xy": [
    2731646.448703882,
    1123903.3892420353
   ],
   "end_xy": [
    2731648.261156701,
    1123904.2348275003
   ]
  },
  "max_3m": {
   "gradient_pct": 20.522444830714903,
   "start_distance_m": 1415.0,
   "end_distance_m": 1418.0,
   "midpoint_distance_m": 1416.5,
   "start_elevation_m": 559.8777078810107,
   "end_elevation_m": 560.4933812259321,
   "start_xy": [
    2731611.990274256,
    1123908.4305709947
   ],
   "end_xy": [
    2731609.2205835707,
    1123907.2811983812
   ]
  }
 },
 "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_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_2731-1123_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2023_2731-1124_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-11T03:33:35+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-run7-260911",
  "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": [
   "2731-1123",
   "2731-1124"
  ],
  "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": "Castaneda",
  "county": "Graub\u00fcnden/Grischun/Grigioni",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}