{
 "ocl_version": "0.1.0",
 "name": "No Name",
 "slug": "no-name-2",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 28.773425718898693,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 220.0,
   "end_distance_m": 222.0,
   "start_elevation_m": 293.92035685554765,
   "end_elevation_m": 294.4958253699256,
   "min_gradient_pct": -2.7837523431770705
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 27.777318668285034,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 219.0,
   "end_distance_m": 222.0,
   "start_elevation_m": 293.6625058098771,
   "end_elevation_m": 294.4958253699256,
   "min_gradient_pct": -2.7974032954678782
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.406849822899403,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 246.0,
   "end_distance_m": 251.0,
   "start_elevation_m": 299.0737463209038,
   "end_elevation_m": 300.3940888120488,
   "min_gradient_pct": -1.6913577558284487
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.13525979442022,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 241.0,
   "end_distance_m": 251.0,
   "start_elevation_m": 297.88056283260676,
   "end_elevation_m": 300.3940888120488,
   "min_gradient_pct": 2.5053439533962774
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 23.732741743596364,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 231.0,
   "end_distance_m": 251.0,
   "start_elevation_m": 295.6475404633295,
   "end_elevation_m": 300.3940888120488,
   "min_gradient_pct": 3.9994379561699134
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 22.59494907012072,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 229.0,
   "end_distance_m": 254.0,
   "start_elevation_m": 295.2100069588258,
   "end_elevation_m": 300.85874422635595,
   "min_gradient_pct": 4.830358951363678
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 19.92336880217738,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 217.0,
   "end_distance_m": 267.0,
   "start_elevation_m": 293.23294670831274,
   "end_elevation_m": 303.1946311094014,
   "min_gradient_pct": 6.640856614228596
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.967105641419153,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 168.0,
   "end_distance_m": 268.0,
   "start_elevation_m": 286.3756468919969,
   "end_elevation_m": 303.34275253341605,
   "min_gradient_pct": 9.864573106159412
  }
 ],
 "shape": {
  "ascent_concentration": 0.341,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 109.0,
  "shape_class": "sustained"
 },
 "length_m": 347.299999999907,
 "start_elevation_m": 268.2156892114249,
 "end_elevation_m": 311.90855423243187,
 "endpoint_gain_m": 43.69286502100698,
 "overall_gradient_pct": 12.580727043195704,
 "accumulated_ascent_m": 44.08303864814337,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.406849822899403,
   "start_distance_m": 246.0,
   "end_distance_m": 251.0,
   "midpoint_distance_m": 248.5,
   "start_elevation_m": 299.0737463209038,
   "end_elevation_m": 300.3940888120488,
   "start_xy": [
    258775.26338353494,
    4765785.742038466
   ],
   "end_xy": [
    258774.92436013612,
    4765790.730531107
   ]
  },
  "max_10m": {
   "gradient_pct": 25.13525979442022,
   "start_distance_m": 241.0,
   "end_distance_m": 251.0,
   "midpoint_distance_m": 246.0,
   "start_elevation_m": 297.88056283260676,
   "end_elevation_m": 300.3940888120488,
   "start_xy": [
    258775.60135444044,
    4765780.753474536
   ],
   "end_xy": [
    258774.92436013612,
    4765790.730531107
   ]
  },
  "max_20m": {
   "gradient_pct": 23.732741743596364,
   "start_distance_m": 231.0,
   "end_distance_m": 251.0,
   "midpoint_distance_m": 241.0,
   "start_elevation_m": 295.6475404633295,
   "end_elevation_m": 300.3940888120488,
   "start_xy": [
    258776.27736283836,
    4765770.776351284
   ],
   "end_xy": [
    258774.92436013612,
    4765790.730531107
   ]
  },
  "max_25m": {
   "gradient_pct": 22.59494907012072,
   "start_distance_m": 229.0,
   "end_distance_m": 254.0,
   "midpoint_distance_m": 241.5,
   "start_elevation_m": 295.2100069588258,
   "end_elevation_m": 300.85874422635595,
   "start_xy": [
    258776.41240086238,
    4765768.780915526
   ],
   "end_xy": [
    258774.7223376552,
    4765793.723720884
   ]
  },
  "max_50m": {
   "gradient_pct": 19.92336880217738,
   "start_distance_m": 217.0,
   "end_distance_m": 267.0,
   "midpoint_distance_m": 242.0,
   "start_elevation_m": 293.23294670831274,
   "end_elevation_m": 303.1946311094014,
   "start_xy": [
    258776.20671043097,
    4765756.826538596
   ],
   "end_xy": [
    258773.8424015681,
    4765806.693905023
   ]
  },
  "max_100m": {
   "gradient_pct": 16.967105641419153,
   "start_distance_m": 168.0,
   "end_distance_m": 268.0,
   "midpoint_distance_m": 218.0,
   "start_elevation_m": 286.3756468919969,
   "end_elevation_m": 303.34275253341605,
   "start_xy": [
    258770.9247667979,
    4765708.112057381
   ],
   "end_xy": [
    258773.77534221197,
    4765807.691654007
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -1.6913577558284487,
   "start_distance_m": 0.0,
   "end_distance_m": 5.0,
   "midpoint_distance_m": 2.5,
   "start_elevation_m": 268.2156892114249,
   "end_elevation_m": 268.13112132363347,
   "start_xy": [
    258768.914,
    4765541.302
   ],
   "end_xy": [
    258768.24093318413,
    4765546.256490478
   ]
  },
  "min_10m": {
   "gradient_pct": 2.5053439533962774,
   "start_distance_m": 0.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 5.0,
   "start_elevation_m": 268.2156892114249,
   "end_elevation_m": 268.4662236067645,
   "start_xy": [
    258768.914,
    4765541.302
   ],
   "end_xy": [
    258767.56701828228,
    4765551.210865795
   ]
  },
  "min_20m": {
   "gradient_pct": 3.9994379561699134,
   "start_distance_m": 0.0,
   "end_distance_m": 20.0,
   "midpoint_distance_m": 10.0,
   "start_elevation_m": 268.2156892114249,
   "end_elevation_m": 269.01557680265887,
   "start_xy": [
    258768.914,
    4765541.302
   ],
   "end_xy": [
    258766.22003658253,
    4765561.119731457
   ]
  },
  "min_25m": {
   "gradient_pct": 4.830358951363678,
   "start_distance_m": 0.0,
   "end_distance_m": 25.0,
   "midpoint_distance_m": 12.5,
   "start_elevation_m": 268.2156892114249,
   "end_elevation_m": 269.4232789492658,
   "start_xy": [
    258768.914,
    4765541.302
   ],
   "end_xy": [
    258765.54696978463,
    4765566.074221803
   ]
  },
  "min_50m": {
   "gradient_pct": 6.640856614228596,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 268.2156892114249,
   "end_elevation_m": 271.5361175185392,
   "start_xy": [
    258768.914,
    4765541.302
   ],
   "end_xy": [
    258762.17993958728,
    4765590.846443474
   ]
  },
  "min_100m": {
   "gradient_pct": 9.864573106159412,
   "start_distance_m": 1.0,
   "end_distance_m": 101.0,
   "midpoint_distance_m": 51.0,
   "start_elevation_m": 268.20054587824836,
   "end_elevation_m": 278.0651189844078,
   "start_xy": [
    258768.7790206502,
    4765542.292848412
   ],
   "end_xy": [
    258763.702806384,
    4765641.502429186
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 28.773425718898693,
   "start_distance_m": 220.0,
   "end_distance_m": 222.0,
   "midpoint_distance_m": 221.0,
   "start_elevation_m": 293.92035685554765,
   "end_elevation_m": 294.4958253699256,
   "start_xy": [
    258776.52977065602,
    4765759.80909289
   ],
   "end_xy": [
    258776.74555140635,
    4765761.79741418
   ]
  },
  "max_3m": {
   "gradient_pct": 27.777318668285034,
   "start_distance_m": 219.0,
   "end_distance_m": 222.0,
   "midpoint_distance_m": 220.5,
   "start_elevation_m": 293.6625058098771,
   "end_elevation_m": 294.4958253699256,
   "start_xy": [
    258776.42273603927,
    4765758.814837599
   ],
   "end_xy": [
    258776.74555140635,
    4765761.79741418
   ]
  }
 },
 "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": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.865,
   "obstruction_max_height_m": 29.41,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "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:26919",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/nh/USGS_one_meter_x25y477_NH_CT_RiverNorthL6_2015.tif"
  ],
  "calculated_at": "2026-09-08T14:13:39+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/new-hampshire-260822-batch.osm.pbf",
  "osm_snapshot": "2026-08-21T20:21:11Z",
  "run_id": "retro-box-260908",
  "elevation_provider": "USGS 3DEP (The National Map)",
  "elevation_licence": "Public domain \u2014 USGS 3DEP 1 m DEM, courtesy of the U.S. Geological Survey",
  "elevation_dataset": "USGS 3DEP 1 m DEM, NH_CT_RiverNorthL6_2015 (collected 2015)",
  "elevation_tile_ids": [
   "x25y477"
  ],
  "route_cut_m": 347.3,
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://usgs-lidar-public.s3-us-west-2.amazonaws.com/USGS_LPC_CT_River_Lot6_Winnipesaulee_2015_LAS_2017",
   "ept_crs": "EPSG:3857",
   "station_coverage": 0.98,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Hancock",
  "county": "New Hampshire"
 }
}