{
 "ocl_version": "0.1.0",
 "name": "Chemin du Dailla",
 "slug": "chemin-du-dailla",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 25.010834816748684,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 596.0,
   "end_distance_m": 598.0,
   "start_elevation_m": 666.7603814286022,
   "end_elevation_m": 667.2605981249371,
   "min_gradient_pct": -8.460195668004644
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.600580405171968,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 52.0,
   "end_distance_m": 55.0,
   "start_elevation_m": 588.9863370957487,
   "end_elevation_m": 589.7243545079039,
   "min_gradient_pct": -8.337009219087577
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 24.027727868735838,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 52.0,
   "end_distance_m": 57.0,
   "start_elevation_m": 588.9863370957487,
   "end_elevation_m": 590.1877234891855,
   "min_gradient_pct": -7.432816910813926
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 23.84370238646852,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 52.0,
   "end_distance_m": 62.0,
   "start_elevation_m": 588.9863370957487,
   "end_elevation_m": 591.3707073343955,
   "min_gradient_pct": -3.6399722285193548
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.080644106342447,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 45.0,
   "end_distance_m": 65.0,
   "start_elevation_m": 587.4132475868046,
   "end_elevation_m": 592.0293764080731,
   "min_gradient_pct": -3.0807599014121934
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.817677544692287,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 581.0,
   "end_distance_m": 606.0,
   "start_elevation_m": 663.3762013096065,
   "end_elevation_m": 669.0806206957795,
   "min_gradient_pct": -2.7862368465575855
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 21.79550559751715,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 25.0,
   "end_distance_m": 75.0,
   "start_elevation_m": 583.238799128315,
   "end_elevation_m": 594.1365519270736,
   "min_gradient_pct": -0.5350041796577898
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 19.03959858729138,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 21.0,
   "end_distance_m": 121.0,
   "start_elevation_m": 582.4722111851377,
   "end_elevation_m": 601.511809772429,
   "min_gradient_pct": 3.6788342532008755
  }
 ],
 "shape": {
  "ascent_concentration": 0.355,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 244.0,
  "shape_class": "sustained"
 },
 "length_m": 832.5999999999046,
 "start_elevation_m": 580.5863126841742,
 "end_elevation_m": 684.6355202490357,
 "endpoint_gain_m": 104.04920756486149,
 "overall_gradient_pct": 12.49690218170471,
 "accumulated_ascent_m": 105.2449992522744,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 24.027727868735838,
   "start_distance_m": 52.0,
   "end_distance_m": 57.0,
   "midpoint_distance_m": 54.5,
   "start_elevation_m": 588.9863370957487,
   "end_elevation_m": 590.1877234891855,
   "start_xy": [
    2579578.181001628,
    1110265.7524395145
   ],
   "end_xy": [
    2579574.766237844,
    1110262.10012718
   ]
  },
  "max_10m": {
   "gradient_pct": 23.84370238646852,
   "start_distance_m": 52.0,
   "end_distance_m": 62.0,
   "midpoint_distance_m": 57.0,
   "start_elevation_m": 588.9863370957487,
   "end_elevation_m": 591.3707073343955,
   "start_xy": [
    2579578.181001628,
    1110265.7524395145
   ],
   "end_xy": [
    2579571.434004704,
    1110258.3730114202
   ]
  },
  "max_20m": {
   "gradient_pct": 23.080644106342447,
   "start_distance_m": 45.0,
   "end_distance_m": 65.0,
   "midpoint_distance_m": 55.0,
   "start_elevation_m": 587.4132475868046,
   "end_elevation_m": 592.0293764080731,
   "start_xy": [
    2579583.1170497406,
    1110270.710229557
   ],
   "end_xy": [
    2579569.4541055015,
    1110256.1191262684
   ]
  },
  "max_25m": {
   "gradient_pct": 22.817677544692287,
   "start_distance_m": 581.0,
   "end_distance_m": 606.0,
   "midpoint_distance_m": 593.5,
   "start_elevation_m": 663.3762013096065,
   "end_elevation_m": 669.0806206957795,
   "start_xy": [
    2579201.0962648657,
    1109919.0274327658
   ],
   "end_xy": [
    2579187.736792264,
    1109897.9934402024
   ]
  },
  "max_50m": {
   "gradient_pct": 21.79550559751715,
   "start_distance_m": 25.0,
   "end_distance_m": 75.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 583.238799128315,
   "end_elevation_m": 594.1365519270736,
   "start_xy": [
    2579599.7626445587,
    1110281.7215675756
   ],
   "end_xy": [
    2579563.30341101,
    1110248.2454616118
   ]
  },
  "max_100m": {
   "gradient_pct": 19.03959858729138,
   "start_distance_m": 21.0,
   "end_distance_m": 121.0,
   "midpoint_distance_m": 71.0,
   "start_elevation_m": 582.4722111851377,
   "end_elevation_m": 601.511809772429,
   "start_xy": [
    2579602.6873032856,
    1110284.4376442924
   ],
   "end_xy": [
    2579534.3860619925,
    1110212.6867294142
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -7.432816910813926,
   "start_distance_m": 773.0,
   "end_distance_m": 778.0,
   "midpoint_distance_m": 775.5,
   "start_elevation_m": 680.4750825573294,
   "end_elevation_m": 680.1034417117887,
   "start_xy": [
    2579051.0320391124,
    1109816.3022627
   ],
   "end_xy": [
    2579047.9226858583,
    1109812.508987602
   ]
  },
  "min_10m": {
   "gradient_pct": -3.6399722285193548,
   "start_distance_m": 471.0,
   "end_distance_m": 481.0,
   "midpoint_distance_m": 476.0,
   "start_elevation_m": 651.8202006307087,
   "end_elevation_m": 651.4562034078567,
   "start_xy": [
    2579269.962704155,
    1110003.6918665243
   ],
   "end_xy": [
    2579265.1535067703,
    1109994.9312828167
   ]
  },
  "min_20m": {
   "gradient_pct": -3.0807599014121934,
   "start_distance_m": 469.0,
   "end_distance_m": 489.0,
   "midpoint_distance_m": 479.0,
   "start_elevation_m": 651.8678378686536,
   "end_elevation_m": 651.2516858883712,
   "start_xy": [
    2579270.8760494348,
    1110005.471093377
   ],
   "end_xy": [
    2579260.657461785,
    1109988.3226861462
   ]
  },
  "min_25m": {
   "gradient_pct": -2.7862368465575855,
   "start_distance_m": 464.0,
   "end_distance_m": 489.0,
   "midpoint_distance_m": 476.5,
   "start_elevation_m": 651.9482451000106,
   "end_elevation_m": 651.2516858883712,
   "start_xy": [
    2579273.211902623,
    1110009.8919289534
   ],
   "end_xy": [
    2579260.657461785,
    1109988.3226861462
   ]
  },
  "min_50m": {
   "gradient_pct": -0.5350041796577898,
   "start_distance_m": 447.0,
   "end_distance_m": 497.0,
   "midpoint_distance_m": 472.0,
   "start_elevation_m": 651.6760765314863,
   "end_elevation_m": 651.4085744416574,
   "start_xy": [
    2579280.8076552963,
    1110025.097873027
   ],
   "end_xy": [
    2579255.617281208,
    1109982.1192033137
   ]
  },
  "min_100m": {
   "gradient_pct": 3.6788342532008755,
   "start_distance_m": 425.0,
   "end_distance_m": 525.0,
   "midpoint_distance_m": 475.0,
   "start_elevation_m": 649.9097643282955,
   "end_elevation_m": 653.5885985814964,
   "start_xy": [
    2579294.5685514654,
    1110041.7075820619
   ],
   "end_xy": [
    2579236.6582371225,
    1109961.5511655887
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 25.010834816748684,
   "start_distance_m": 596.0,
   "end_distance_m": 598.0,
   "midpoint_distance_m": 597.0,
   "start_elevation_m": 666.7603814286022,
   "end_elevation_m": 667.2605981249371,
   "start_xy": [
    2579193.604555441,
    1109906.0731976503
   ],
   "end_xy": [
    2579192.5065368135,
    1109904.4016579085
   ]
  },
  "max_3m": {
   "gradient_pct": 24.600580405171968,
   "start_distance_m": 52.0,
   "end_distance_m": 55.0,
   "midpoint_distance_m": 53.5,
   "start_elevation_m": 588.9863370957487,
   "end_elevation_m": 589.7243545079039,
   "start_xy": [
    2579578.181001628,
    1110265.7524395145
   ],
   "end_xy": [
    2579576.1321563534,
    1110263.5610399626
   ]
  }
 },
 "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_2024_2579-1109_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2024_2579-1110_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-11T00:41:26+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-extent-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": [
   "2579-1109",
   "2579-1110"
  ],
  "route_base_cut_m": 90.3,
  "route_cut_m": 832.6,
  "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": "Saxon",
  "county": "Valais/Wallis",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}