{
 "ocl_version": "0.1.0",
 "name": "Roberta Place",
 "slug": "roberta-place",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 33.1531038822213,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 58.0,
   "end_distance_m": 60.0,
   "start_elevation_m": 90.44196607607121,
   "end_elevation_m": 91.10502815371564,
   "min_gradient_pct": -1.4542383147883697
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 33.03359641160881,
   "diagnostic": true,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 57.0,
   "end_distance_m": 60.0,
   "start_elevation_m": 90.11402026136737,
   "end_elevation_m": 91.10502815371564,
   "min_gradient_pct": 0.6895759602239574
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 31.068670758747885,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 55.0,
   "end_distance_m": 60.0,
   "start_elevation_m": 89.55159461577824,
   "end_elevation_m": 91.10502815371564,
   "min_gradient_pct": 3.0692129665962398
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.600586605938958,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 52.0,
   "end_distance_m": 62.0,
   "start_elevation_m": 88.96508052380346,
   "end_elevation_m": 91.52513918439736,
   "min_gradient_pct": 4.347833497024567
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.414093894616585,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 53.0,
   "end_distance_m": 73.0,
   "start_elevation_m": 89.14690223479768,
   "end_elevation_m": 93.629721013721,
   "min_gradient_pct": 5.160208991489625
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.73766924682872,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 54.0,
   "end_distance_m": 79.0,
   "start_elevation_m": 89.3454231240708,
   "end_elevation_m": 94.77984043577798,
   "min_gradient_pct": 5.715810423270511
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 20.17306645838127,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 53.0,
   "end_distance_m": 103.0,
   "start_elevation_m": 89.14690223479768,
   "end_elevation_m": 99.23343546398831,
   "min_gradient_pct": 6.370329415316746
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 18.757390352128837,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 51.0,
   "end_distance_m": 151.0,
   "start_elevation_m": 88.79574957267144,
   "end_elevation_m": 107.55313992480028,
   "min_gradient_pct": 12.638431949033517
  }
 ],
 "shape": {
  "ascent_concentration": 0.361,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 133.0,
  "shape_class": "sustained"
 },
 "length_m": 284.3788201062326,
 "start_elevation_m": 85.45637309350852,
 "end_elevation_m": 124.13267913510438,
 "endpoint_gain_m": 38.676306041595865,
 "overall_gradient_pct": 13.600276570226972,
 "accumulated_ascent_m": 38.7058723273484,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 31.068670758747885,
   "start_distance_m": 55.0,
   "end_distance_m": 60.0,
   "midpoint_distance_m": 57.5,
   "start_elevation_m": 89.55159461577824,
   "end_elevation_m": 91.10502815371564,
   "start_xy": [
    603742.4761858886,
    4546023.128678811
   ],
   "end_xy": [
    603743.4278042333,
    4546028.0372857945
   ]
  },
  "max_10m": {
   "gradient_pct": 25.600586605938958,
   "start_distance_m": 52.0,
   "end_distance_m": 62.0,
   "midpoint_distance_m": 57.0,
   "start_elevation_m": 88.96508052380346,
   "end_elevation_m": 91.52513918439736,
   "start_xy": [
    603741.9052148819,
    4546020.18351462
   ],
   "end_xy": [
    603743.8084515712,
    4546030.000728589
   ]
  },
  "max_20m": {
   "gradient_pct": 22.414093894616585,
   "start_distance_m": 53.0,
   "end_distance_m": 73.0,
   "midpoint_distance_m": 63.0,
   "start_elevation_m": 89.14690223479768,
   "end_elevation_m": 93.629721013721,
   "start_xy": [
    603742.0955385508,
    4546021.165236017
   ],
   "end_xy": [
    603745.9020119293,
    4546040.7996639535
   ]
  },
  "max_25m": {
   "gradient_pct": 21.73766924682872,
   "start_distance_m": 54.0,
   "end_distance_m": 79.0,
   "midpoint_distance_m": 66.5,
   "start_elevation_m": 89.3454231240708,
   "end_elevation_m": 94.77984043577798,
   "start_xy": [
    603742.2858622198,
    4546022.146957413
   ],
   "end_xy": [
    603747.043953943,
    4546046.689992335
   ]
  },
  "max_50m": {
   "gradient_pct": 20.17306645838127,
   "start_distance_m": 53.0,
   "end_distance_m": 103.0,
   "midpoint_distance_m": 78.0,
   "start_elevation_m": 89.14690223479768,
   "end_elevation_m": 99.23343546398831,
   "start_xy": [
    603742.0955385508,
    4546021.165236017
   ],
   "end_xy": [
    603752.0881605403,
    4546070.152347705
   ]
  },
  "max_100m": {
   "gradient_pct": 18.757390352128837,
   "start_distance_m": 51.0,
   "end_distance_m": 151.0,
   "midpoint_distance_m": 101.0,
   "start_elevation_m": 88.79574957267144,
   "end_elevation_m": 107.55313992480028,
   "start_xy": [
    603741.714891213,
    4546019.201793223
   ],
   "end_xy": [
    603762.4738026364,
    4546117.015322838
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": 3.0692129665962398,
   "start_distance_m": 29.0,
   "end_distance_m": 34.0,
   "midpoint_distance_m": 31.5,
   "start_elevation_m": 87.3717879290723,
   "end_elevation_m": 87.52524857740211,
   "start_xy": [
    603730.3830058767,
    4546019.454910051
   ],
   "end_xy": [
    603734.050751157,
    4546016.056727514
   ]
  },
  "min_10m": {
   "gradient_pct": 4.347833497024567,
   "start_distance_m": 29.0,
   "end_distance_m": 39.0,
   "midpoint_distance_m": 34.0,
   "start_elevation_m": 87.3717879290723,
   "end_elevation_m": 87.80657127877475,
   "start_xy": [
    603730.3830058767,
    4546019.454910051
   ],
   "end_xy": [
    603737.7184964373,
    4546012.658544976
   ]
  },
  "min_20m": {
   "gradient_pct": 5.160208991489625,
   "start_distance_m": 25.0,
   "end_distance_m": 45.0,
   "midpoint_distance_m": 35.0,
   "start_elevation_m": 87.00645004579513,
   "end_elevation_m": 88.03849184409306,
   "start_xy": [
    603727.4488096524,
    4546022.173456081
   ],
   "end_xy": [
    603740.5729491994,
    4546013.3114648415
   ]
  },
  "min_25m": {
   "gradient_pct": 5.715810423270511,
   "start_distance_m": 19.0,
   "end_distance_m": 44.0,
   "midpoint_distance_m": 31.5,
   "start_elevation_m": 86.53353643136401,
   "end_elevation_m": 87.96248903718164,
   "start_xy": [
    603723.0475153159,
    4546026.251275127
   ],
   "end_xy": [
    603740.3826255305,
    4546012.329743445
   ]
  },
  "min_50m": {
   "gradient_pct": 6.370329415316746,
   "start_distance_m": 0.0,
   "end_distance_m": 50.0,
   "midpoint_distance_m": 25.0,
   "start_elevation_m": 85.45637309350852,
   "end_elevation_m": 88.64153780116689,
   "start_xy": [
    603706.958,
    4546036.164
   ],
   "end_xy": [
    603741.524567544,
    4546018.220071826
   ]
  },
  "min_100m": {
   "gradient_pct": 12.638431949033517,
   "start_distance_m": 156.0,
   "end_distance_m": 256.0,
   "midpoint_distance_m": 206.0,
   "start_elevation_m": 108.32120562684,
   "end_elevation_m": 120.95963757587351,
   "start_xy": [
    603763.5556403546,
    4546121.896882747
   ],
   "end_xy": [
    603812.7752446758,
    4546196.8839137815
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 33.1531038822213,
   "start_distance_m": 58.0,
   "end_distance_m": 60.0,
   "midpoint_distance_m": 59.0,
   "start_elevation_m": 90.44196607607121,
   "end_elevation_m": 91.10502815371564,
   "start_xy": [
    603743.0471568954,
    4546026.073843001
   ],
   "end_xy": [
    603743.4278042333,
    4546028.0372857945
   ]
  },
  "max_3m": {
   "gradient_pct": 33.03359641160881,
   "start_distance_m": 57.0,
   "end_distance_m": 60.0,
   "midpoint_distance_m": 58.5,
   "start_elevation_m": 90.11402026136737,
   "end_elevation_m": 91.10502815371564,
   "start_xy": [
    603742.8568332265,
    4546025.092121604
   ],
   "end_xy": [
    603743.4278042333,
    4546028.0372857945
   ]
  }
 },
 "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": 0.392,
   "obstruction_max_height_m": 27.75,
   "flagged_windows_m": [
    2,
    3,
    5,
    10,
    20,
    25,
    50,
    100
   ]
  },
  "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:26918",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/ny/USGS_1M_18_x60y455_NY_FEMAR2_Central_2018_D19.tif"
  ],
  "calculated_at": "2026-09-06T11:35:26+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/new-york-2026-09-06-batch-band3.osm.pbf",
  "osm_snapshot": "",
  "run_id": "ny-run3-260906",
  "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, NY_FEMAR2_Central_2018_D19 (collected 2018)",
  "elevation_tile_ids": [
   "x60y455"
  ],
  "climb_origin": "discovered",
  "canopy_source": {
   "kind": "ept_corridor_max_return",
   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/NY_FEMAR2_Central_B1_2018",
   "ept_crs": "EPSG:3857",
   "station_coverage": 1.0,
   "cell_ground_m": 1.0,
   "nodes_failed": 0
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "North Castle",
  "county": "New York"
 }
}