{
 "ocl_version": "0.1.0",
 "name": "Ch\u00e2teau Sec",
 "slug": "chateau-sec",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 54.1147018300137,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2.0,
   "end_distance_m": 4.0,
   "start_elevation_m": 668.9720354166956,
   "end_elevation_m": 670.0543294532958,
   "min_gradient_pct": -2.3038874242161
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 50.64869912703974,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 1.0,
   "end_distance_m": 4.0,
   "start_elevation_m": 668.5348684794847,
   "end_elevation_m": 670.0543294532958,
   "min_gradient_pct": -2.1845554093147257
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 40.33560938306891,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "start_elevation_m": 668.1334728330513,
   "end_elevation_m": 670.1502533022048,
   "min_gradient_pct": 0.824400986434739
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.938194803427677,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 20.0,
   "end_distance_m": 30.0,
   "start_elevation_m": 672.0462091350386,
   "end_elevation_m": 674.2400286153813,
   "min_gradient_pct": 1.4609680332569042
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 21.003391498530846,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 18.0,
   "end_distance_m": 38.0,
   "start_elevation_m": 671.6402727308371,
   "end_elevation_m": 675.8409510305432,
   "min_gradient_pct": 1.5733699746755292
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.46863109193191,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 17.0,
   "end_distance_m": 42.0,
   "start_elevation_m": 671.4618320510207,
   "end_elevation_m": 676.5789898240037,
   "min_gradient_pct": 1.7300211870178828
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.026894059441247,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "start_elevation_m": 668.1334728330513,
   "end_elevation_m": 677.6469198627719,
   "min_gradient_pct": 2.374750219204543
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.316845681538325,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "start_elevation_m": 668.1334728330513,
   "end_elevation_m": 684.4503185145896,
   "min_gradient_pct": 4.9243761612451635
  }
 ],
 "shape": {
  "ascent_concentration": 0.38,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 96.0,
  "shape_class": "sustained"
 },
 "length_m": 285.6297044624507,
 "start_elevation_m": 668.1334728330513,
 "end_elevation_m": 699.4842008691559,
 "endpoint_gain_m": 31.350728036104556,
 "overall_gradient_pct": 10.976004087217044,
 "accumulated_ascent_m": 31.517736305932544,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 40.33560938306891,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 668.1334728330513,
   "end_elevation_m": 670.1502533022048,
   "start_xy": [
    2526212.573,
    1173418.674
   ],
   "end_xy": [
    2526207.7363426443,
    1173417.4064252977
   ]
  },
  "max_10m": {
   "gradient_pct": 21.938194803427677,
   "start_distance_m": 20.0,
   "end_distance_m": 30.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 672.0462091350386,
   "end_elevation_m": 674.2400286153813,
   "start_xy": [
    2526193.226370578,
    1173413.6037011903
   ],
   "end_xy": [
    2526183.7295685583,
    1173410.4819609674
   ]
  },
  "max_20m": {
   "gradient_pct": 21.003391498530846,
   "start_distance_m": 18.0,
   "end_distance_m": 38.0,
   "midpoint_distance_m": 28.0,
   "start_elevation_m": 671.6402727308371,
   "end_elevation_m": 675.8409510305432,
   "start_xy": [
    2526195.1610335205,
    1173414.1107310713
   ],
   "end_xy": [
    2526176.156771515,
    1173407.9026694102
   ]
  },
  "max_25m": {
   "gradient_pct": 20.46863109193191,
   "start_distance_m": 17.0,
   "end_distance_m": 42.0,
   "midpoint_distance_m": 29.5,
   "start_elevation_m": 671.4618320510207,
   "end_elevation_m": 676.5789898240037,
   "start_xy": [
    2526196.1283649914,
    1173414.3642460117
   ],
   "end_xy": [
    2526172.370372993,
    1173406.6130236317
   ]
  },
  "max_50m": {
   "gradient_pct": 19.026894059441247,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 668.1334728330513,
   "end_elevation_m": 677.6469198627719,
   "start_xy": [
    2526212.573,
    1173418.674
   ],
   "end_xy": [
    2526165.0555560286,
    1173403.3850667349
   ]
  },
  "max_100m": {
   "gradient_pct": 16.316845681538325,
   "start_distance_m": 0.0,
   "end_distance_m": 100.0,
   "midpoint_distance_m": 50.0,
   "start_elevation_m": 668.1334728330513,
   "end_elevation_m": 684.4503185145896,
   "start_xy": [
    2526212.573,
    1173418.674
   ],
   "end_xy": [
    2526115.7945904555,
    1173408.4538348503
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 0.824400986434739,
   "start_distance_m": 220.0,
   "end_distance_m": 225.0,
   "midpoint_distance_m": 222.5,
   "start_elevation_m": 697.4399354052864,
   "end_elevation_m": 697.4811554546081,
   "start_xy": [
    2526017.9120433987,
    1173472.2887206834
   ],
   "end_xy": [
    2526013.1256973105,
    1173473.7347120817
   ]
  },
  "min_10m": {
   "gradient_pct": 1.4609680332569042,
   "start_distance_m": 220.0,
   "end_distance_m": 230.0,
   "midpoint_distance_m": 225.0,
   "start_elevation_m": 697.4399354052864,
   "end_elevation_m": 697.5860322086121,
   "start_xy": [
    2526017.9120433987,
    1173472.2887206834
   ],
   "end_xy": [
    2526008.5727593238,
    1173475.7971876226
   ]
  },
  "min_20m": {
   "gradient_pct": 1.5733699746755292,
   "start_distance_m": 220.0,
   "end_distance_m": 240.0,
   "midpoint_distance_m": 230.0,
   "start_elevation_m": 697.4399354052864,
   "end_elevation_m": 697.7546094002215,
   "start_xy": [
    2526017.9120433987,
    1173472.2887206834
   ],
   "end_xy": [
    2525999.4850930343,
    1173479.97023464
   ]
  },
  "min_25m": {
   "gradient_pct": 1.7300211870178828,
   "start_distance_m": 217.0,
   "end_distance_m": 242.0,
   "midpoint_distance_m": 229.5,
   "start_elevation_m": 697.3590742640193,
   "end_elevation_m": 697.7915795607738,
   "start_xy": [
    2526020.7838510517,
    1173471.4211258444
   ],
   "end_xy": [
    2525997.6841532183,
    1173480.8397032109
   ]
  },
  "min_50m": {
   "gradient_pct": 2.374750219204543,
   "start_distance_m": 216.0,
   "end_distance_m": 266.0,
   "midpoint_distance_m": 241.0,
   "start_elevation_m": 697.331332454108,
   "end_elevation_m": 698.5187075637102,
   "start_xy": [
    2526021.741120269,
    1173471.1319275645
   ],
   "end_xy": [
    2525976.158399503,
    1173491.452993323
   ]
  },
  "min_100m": {
   "gradient_pct": 4.9243761612451635,
   "start_distance_m": 185.0,
   "end_distance_m": 285.0,
   "midpoint_distance_m": 235.0,
   "start_elevation_m": 694.5242669651661,
   "end_elevation_m": 699.4486431264113,
   "start_xy": [
    2526047.099582695,
    1173454.3737486443
   ],
   "end_xy": [
    2525959.095917692,
    1173499.81183904
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 54.1147018300137,
   "start_distance_m": 2.0,
   "end_distance_m": 4.0,
   "midpoint_distance_m": 3.0,
   "start_elevation_m": 668.9720354166956,
   "end_elevation_m": 670.0543294532958,
   "start_xy": [
    2526210.6383370575,
    1173418.166970119
   ],
   "end_xy": [
    2526208.7036741157,
    1173417.659940238
   ]
  },
  "max_3m": {
   "gradient_pct": 50.64869912703974,
   "start_distance_m": 1.0,
   "end_distance_m": 4.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 668.5348684794847,
   "end_elevation_m": 670.0543294532958,
   "start_xy": [
    2526211.605668529,
    1173418.4204850597
   ],
   "end_xy": [
    2526208.7036741157,
    1173417.659940238
   ]
  }
 },
 "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": [
   "short_window_divergence"
  ],
  "extent": [
   "may_start_earlier"
  ]
 },
 "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_2525-1173_0.5_2056_5728.tif",
   "data/cache/ch/swissalti3d_2021_2526-1173_0.5_2056_5728.tif"
  ],
  "calculated_at": "2026-09-11T02:04:14+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": [
   "2525-1173",
   "2526-1173"
  ],
  "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": "Bretonni\u00e8res",
  "county": "Vaud",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}