{
 "ocl_version": "0.1.0",
 "name": "Veia Naladas",
 "slug": "veia-naladas",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 29.57205722004801,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 464.0,
   "end_distance_m": 466.0,
   "start_elevation_m": 2294.041520033672,
   "end_elevation_m": 2294.632961178073,
   "min_gradient_pct": -15.741568653743343
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 25.462599995201646,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 463.0,
   "end_distance_m": 466.0,
   "start_elevation_m": 2293.869083178217,
   "end_elevation_m": 2294.632961178073,
   "min_gradient_pct": -15.632250162237446
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.10829853289397,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 550.0,
   "end_distance_m": 555.0,
   "start_elevation_m": 2307.5430204927957,
   "end_elevation_m": 2308.6484354194404,
   "min_gradient_pct": -15.229690760361336
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.22247765281827,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 550.0,
   "end_distance_m": 560.0,
   "start_elevation_m": 2307.5430204927957,
   "end_elevation_m": 2309.6652682580775,
   "min_gradient_pct": -13.801817057910739
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.38926451069983,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 543.0,
   "end_distance_m": 563.0,
   "start_elevation_m": 2306.20590029346,
   "end_elevation_m": 2310.2837531956,
   "min_gradient_pct": -12.009314344315953
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.043273791045067,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 540.0,
   "end_distance_m": 565.0,
   "start_elevation_m": 2305.625817300962,
   "end_elevation_m": 2310.636635748723,
   "min_gradient_pct": -11.671821113457554
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.270819369640776,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 520.0,
   "end_distance_m": 570.0,
   "start_elevation_m": 2302.404756009079,
   "end_elevation_m": 2311.5401656938993,
   "min_gradient_pct": -8.302968809108279
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.914706429032776,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 529.0,
   "end_distance_m": 629.0,
   "start_elevation_m": 2303.8587204319074,
   "end_elevation_m": 2320.77342686094,
   "min_gradient_pct": -6.477263154287357
  }
 ],
 "shape": {
  "ascent_concentration": 0.425,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 208.0,
  "shape_class": "sustained"
 },
 "length_m": 817.3422945973568,
 "start_elevation_m": 2274.094414230461,
 "end_elevation_m": 2342.8577255488035,
 "endpoint_gain_m": 68.7633113183424,
 "overall_gradient_pct": 8.413037202756884,
 "accumulated_ascent_m": 76.05091487794152,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.10829853289397,
   "start_distance_m": 550.0,
   "end_distance_m": 555.0,
   "midpoint_distance_m": 552.5,
   "start_elevation_m": 2307.5430204927957,
   "end_elevation_m": 2308.6484354194404,
   "start_xy": [
    2760801.445377504,
    1160005.1009449326
   ],
   "end_xy": [
    2760803.3599412893,
    1160009.5825186598
   ]
  },
  "max_10m": {
   "gradient_pct": 21.22247765281827,
   "start_distance_m": 550.0,
   "end_distance_m": 560.0,
   "midpoint_distance_m": 555.0,
   "start_elevation_m": 2307.5430204927957,
   "end_elevation_m": 2309.6652682580775,
   "start_xy": [
    2760801.445377504,
    1160005.1009449326
   ],
   "end_xy": [
    2760802.5358166792,
    1160014.5141328606
   ]
  },
  "max_20m": {
   "gradient_pct": 20.38926451069983,
   "start_distance_m": 543.0,
   "end_distance_m": 563.0,
   "midpoint_distance_m": 553.0,
   "start_elevation_m": 2306.20590029346,
   "end_elevation_m": 2310.2837531956,
   "start_xy": [
    2760798.1428260915,
    1159998.9289797537
   ],
   "end_xy": [
    2760802.041341913,
    1160017.4731013812
   ]
  },
  "max_25m": {
   "gradient_pct": 20.043273791045067,
   "start_distance_m": 540.0,
   "end_distance_m": 565.0,
   "midpoint_distance_m": 552.5,
   "start_elevation_m": 2305.625817300962,
   "end_elevation_m": 2310.636635748723,
   "start_xy": [
    2760796.7274469147,
    1159996.28385182
   ],
   "end_xy": [
    2760800.806351977,
    1160018.947766749
   ]
  },
  "max_50m": {
   "gradient_pct": 18.270819369640776,
   "start_distance_m": 520.0,
   "end_distance_m": 570.0,
   "midpoint_distance_m": 545.0,
   "start_elevation_m": 2302.404756009079,
   "end_elevation_m": 2311.5401656938993,
   "start_xy": [
    2760783.4386094045,
    1159981.7904517876
   ],
   "end_xy": [
    2760797.0825380823,
    1160022.2844132807
   ]
  },
  "max_100m": {
   "gradient_pct": 16.914706429032776,
   "start_distance_m": 529.0,
   "end_distance_m": 629.0,
   "midpoint_distance_m": 579.0,
   "start_elevation_m": 2303.8587204319074,
   "end_elevation_m": 2320.77342686094,
   "start_xy": [
    2760790.3551943935,
    1159987.5489977926
   ],
   "end_xy": [
    2760747.6059376434,
    1160049.3181351987
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -15.229690760361336,
   "start_distance_m": 109.0,
   "end_distance_m": 114.0,
   "midpoint_distance_m": 111.5,
   "start_elevation_m": 2278.2473043852383,
   "end_elevation_m": 2277.4858198472202,
   "start_xy": [
    2760674.745134338,
    1159664.873351026
   ],
   "end_xy": [
    2760679.236225248,
    1159666.950820574
   ]
  },
  "min_10m": {
   "gradient_pct": -13.801817057910739,
   "start_distance_m": 106.0,
   "end_distance_m": 116.0,
   "midpoint_distance_m": 111.0,
   "start_elevation_m": 2278.592643738618,
   "end_elevation_m": 2277.212462032827,
   "start_xy": [
    2760672.358648641,
    1159663.0554714866
   ],
   "end_xy": [
    2760681.1228999873,
    1159667.614490994
   ]
  },
  "min_20m": {
   "gradient_pct": -12.009314344315953,
   "start_distance_m": 104.0,
   "end_distance_m": 124.0,
   "midpoint_distance_m": 114.0,
   "start_elevation_m": 2278.8197098554956,
   "end_elevation_m": 2276.4178469866324,
   "start_xy": [
    2760670.767658177,
    1159661.8435517938
   ],
   "end_xy": [
    2760688.6695989463,
    1159670.269172674
   ]
  },
  "min_25m": {
   "gradient_pct": -11.671821113457554,
   "start_distance_m": 104.0,
   "end_distance_m": 129.0,
   "midpoint_distance_m": 116.5,
   "start_elevation_m": 2278.8197098554956,
   "end_elevation_m": 2275.901754577131,
   "start_xy": [
    2760670.767658177,
    1159661.8435517938
   ],
   "end_xy": [
    2760693.5735845757,
    1159670.625791244
   ]
  },
  "min_50m": {
   "gradient_pct": -8.302968809108279,
   "start_distance_m": 97.0,
   "end_distance_m": 147.0,
   "midpoint_distance_m": 122.0,
   "start_elevation_m": 2279.083817469806,
   "end_elevation_m": 2274.932333065252,
   "start_xy": [
    2760666.4978085333,
    1159656.4209561646
   ],
   "end_xy": [
    2760711.5486705382,
    1159669.6790681353
   ]
  },
  "min_100m": {
   "gradient_pct": -6.477263154287357,
   "start_distance_m": 92.0,
   "end_distance_m": 192.0,
   "midpoint_distance_m": 142.0,
   "start_elevation_m": 2279.0868859720995,
   "end_elevation_m": 2272.609622817812,
   "start_xy": [
    2760664.0912559093,
    1159652.0475977242
   ],
   "end_xy": [
    2760748.08500601,
    1159686.467641662
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 29.57205722004801,
   "start_distance_m": 464.0,
   "end_distance_m": 466.0,
   "midpoint_distance_m": 465.0,
   "start_elevation_m": 2294.041520033672,
   "end_elevation_m": 2294.632961178073,
   "start_xy": [
    2760768.1562508526,
    1159934.802584023
   ],
   "end_xy": [
    2760767.70411177,
    1159936.7508063535
   ]
  },
  "max_3m": {
   "gradient_pct": 25.462599995201646,
   "start_distance_m": 463.0,
   "end_distance_m": 466.0,
   "midpoint_distance_m": 464.5,
   "start_elevation_m": 2293.869083178217,
   "end_elevation_m": 2294.632961178073,
   "start_xy": [
    2760768.382320394,
    1159933.8284728576
   ],
   "end_xy": [
    2760767.70411177,
    1159936.7508063535
   ]
  }
 },
 "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_2760-1159_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2023_2760-1160_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-10T20:31:58+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": [
   "2760-1159",
   "2760-1160"
  ],
  "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": "Surses",
  "county": "Graub\u00fcnden/Grischun/Grigioni",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}