{
 "ocl_version": "0.1.0",
 "name": "Prospect Place",
 "slug": "prospect-place",
 "confidence": "U",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 57.315325788414384,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 950.0,
   "end_distance_m": 952.0,
   "start_elevation_m": 137.28919163903356,
   "end_elevation_m": 138.43549815480185,
   "min_gradient_pct": -16.11894329651875
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 56.46372619523845,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 950.0,
   "end_distance_m": 953.0,
   "start_elevation_m": 137.28919163903356,
   "end_elevation_m": 138.98310342489071,
   "min_gradient_pct": -15.334162968941692
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 49.11031790625316,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 948.0,
   "end_distance_m": 953.0,
   "start_elevation_m": 136.52758752957806,
   "end_elevation_m": 138.98310342489071,
   "min_gradient_pct": -14.1331788051491
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 36.60752526657973,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1037.0,
   "end_distance_m": 1047.0,
   "start_elevation_m": 153.1283144994348,
   "end_elevation_m": 156.78906702609277,
   "min_gradient_pct": -10.686823793217286
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 33.77639534840753,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1027.0,
   "end_distance_m": 1047.0,
   "start_elevation_m": 150.03378795641126,
   "end_elevation_m": 156.78906702609277,
   "min_gradient_pct": -2.848732700997232
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 30.84409562135545,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 1022.0,
   "end_distance_m": 1047.0,
   "start_elevation_m": 149.0780431207539,
   "end_elevation_m": 156.78906702609277,
   "min_gradient_pct": -2.635337265262649
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 23.10117312241977,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 997.0,
   "end_distance_m": 1047.0,
   "start_elevation_m": 145.23848046488288,
   "end_elevation_m": 156.78906702609277,
   "min_gradient_pct": -1.915617240428361
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 20.37529002481162,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 947.0,
   "end_distance_m": 1047.0,
   "start_elevation_m": 136.41377700128115,
   "end_elevation_m": 156.78906702609277,
   "min_gradient_pct": -1.2244073654753294
  }
 ],
 "shape": {
  "ascent_concentration": 0.447,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 90.0,
  "shape_class": "sustained"
 },
 "length_m": 1047.3624316271307,
 "start_elevation_m": 76.06799606242691,
 "end_elevation_m": 156.89109158873674,
 "endpoint_gain_m": 80.82309552630983,
 "overall_gradient_pct": 7.716822093833081,
 "accumulated_ascent_m": 83.91706172164936,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 49.11031790625316,
   "start_distance_m": 948.0,
   "end_distance_m": 953.0,
   "midpoint_distance_m": 950.5,
   "start_elevation_m": 136.52758752957806,
   "end_elevation_m": 138.98310342489071,
   "start_xy": [
    633245.5456077466,
    4603971.370040528
   ],
   "end_xy": [
    633249.7560216265,
    4603974.066782072
   ]
  },
  "max_10m": {
   "gradient_pct": 36.60752526657973,
   "start_distance_m": 1037.0,
   "end_distance_m": 1047.0,
   "midpoint_distance_m": 1042.0,
   "start_elevation_m": 153.1283144994348,
   "end_elevation_m": 156.78906702609277,
   "start_xy": [
    633320.4909748094,
    4604019.372040025
   ],
   "end_xy": [
    633328.9118025693,
    4604024.765523115
   ]
  },
  "max_20m": {
   "gradient_pct": 33.77639534840753,
   "start_distance_m": 1027.0,
   "end_distance_m": 1047.0,
   "midpoint_distance_m": 1037.0,
   "start_elevation_m": 150.03378795641126,
   "end_elevation_m": 156.78906702609277,
   "start_xy": [
    633312.0701470495,
    4604013.978556936
   ],
   "end_xy": [
    633328.9118025693,
    4604024.765523115
   ]
  },
  "max_25m": {
   "gradient_pct": 30.84409562135545,
   "start_distance_m": 1022.0,
   "end_distance_m": 1047.0,
   "midpoint_distance_m": 1034.5,
   "start_elevation_m": 149.0780431207539,
   "end_elevation_m": 156.78906702609277,
   "start_xy": [
    633307.8597331695,
    4604011.281815391
   ],
   "end_xy": [
    633328.9118025693,
    4604024.765523115
   ]
  },
  "max_50m": {
   "gradient_pct": 23.10117312241977,
   "start_distance_m": 997.0,
   "end_distance_m": 1047.0,
   "midpoint_distance_m": 1022.0,
   "start_elevation_m": 145.23848046488288,
   "end_elevation_m": 156.78906702609277,
   "start_xy": [
    633286.8076637699,
    4603997.798107667
   ],
   "end_xy": [
    633328.9118025693,
    4604024.765523115
   ]
  },
  "max_100m": {
   "gradient_pct": 20.37529002481162,
   "start_distance_m": 947.0,
   "end_distance_m": 1047.0,
   "midpoint_distance_m": 997.0,
   "start_elevation_m": 136.41377700128115,
   "end_elevation_m": 156.78906702609277,
   "start_xy": [
    633244.7035249706,
    4603970.830692218
   ],
   "end_xy": [
    633328.9118025693,
    4604024.765523115
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -14.1331788051491,
   "start_distance_m": 934.0,
   "end_distance_m": 939.0,
   "midpoint_distance_m": 936.5,
   "start_elevation_m": 137.3331312630857,
   "end_elevation_m": 136.62647232282825,
   "start_xy": [
    633233.7564142561,
    4603963.819218277
   ],
   "end_xy": [
    633237.9668627627,
    4603966.515905746
   ]
  },
  "min_10m": {
   "gradient_pct": -10.686823793217286,
   "start_distance_m": 933.0,
   "end_distance_m": 943.0,
   "midpoint_distance_m": 938.0,
   "start_elevation_m": 137.42652084090346,
   "end_elevation_m": 136.35783846158174,
   "start_xy": [
    633232.9142146358,
    4603963.28005244
   ],
   "end_xy": [
    633241.3351938666,
    4603968.673298982
   ]
  },
  "min_20m": {
   "gradient_pct": -2.848732700997232,
   "start_distance_m": 734.0,
   "end_distance_m": 754.0,
   "midpoint_distance_m": 744.0,
   "start_elevation_m": 121.88693749509113,
   "end_elevation_m": 121.31719095489169,
   "start_xy": [
    633126.9954719767,
    4603812.607598825
   ],
   "end_xy": [
    633129.2567697369,
    4603832.479350949
   ]
  },
  "min_25m": {
   "gradient_pct": -2.635337265262649,
   "start_distance_m": 732.0,
   "end_distance_m": 757.0,
   "midpoint_distance_m": 744.5,
   "start_elevation_m": 121.91104817520814,
   "end_elevation_m": 121.25221385889247,
   "start_xy": [
    633126.7693422006,
    4603810.620423613
   ],
   "end_xy": [
    633129.5959644009,
    4603835.460113767
   ]
  },
  "min_50m": {
   "gradient_pct": -1.915617240428361,
   "start_distance_m": 715.0,
   "end_distance_m": 765.0,
   "midpoint_distance_m": 740.0,
   "start_elevation_m": 122.09812191427744,
   "end_elevation_m": 121.14031329406326,
   "start_xy": [
    633124.8472391044,
    4603793.729434309
   ],
   "end_xy": [
    633130.5004835051,
    4603843.4088146165
   ]
  },
  "min_100m": {
   "gradient_pct": -1.2244073654753294,
   "start_distance_m": 697.0,
   "end_distance_m": 797.0,
   "midpoint_distance_m": 747.0,
   "start_elevation_m": 121.95362525865187,
   "end_elevation_m": 120.72921789317654,
   "start_xy": [
    633123.8489485572,
    4603775.7616894115
   ],
   "end_xy": [
    633135.6441057706,
    4603874.980543105
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 57.315325788414384,
   "start_distance_m": 950.0,
   "end_distance_m": 952.0,
   "midpoint_distance_m": 951.0,
   "start_elevation_m": 137.28919163903356,
   "end_elevation_m": 138.43549815480185,
   "start_xy": [
    633247.2297732986,
    4603972.448737145
   ],
   "end_xy": [
    633248.9139388505,
    4603973.527433763
   ]
  },
  "max_3m": {
   "gradient_pct": 56.46372619523845,
   "start_distance_m": 950.0,
   "end_distance_m": 953.0,
   "midpoint_distance_m": 951.5,
   "start_elevation_m": 137.28919163903356,
   "end_elevation_m": 138.98310342489071,
   "start_xy": [
    633247.2297732986,
    4603972.448737145
   ],
   "end_xy": [
    633249.7560216265,
    4603974.066782072
   ]
  }
 },
 "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": [
   "max5_over_45",
   "short_window_divergence"
  ],
  "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/ct/USGS_1M_18_x63y461_CT_Statewide_C16.tif"
  ],
  "calculated_at": "2026-08-24T21:36:27+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/connecticut-2026-08-23.osm.pbf",
  "osm_snapshot": "2026-08-22T20:21:28Z",
  "run_id": "redo-ct-1-260824",
  "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, CT_Statewide_C16 (collected 2016)",
  "elevation_tile_ids": [
   "x63y461"
  ],
  "climb_origin": "discovered",
  "notes": "Coarse pass: max 16.3% over 200 m (Terrain 50), gain 40.6 m over 596 m way. EXTENDED by graph walk: +7 segment(s) at base, +0 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. ADOPTED (NE wave 1, 2026-08-25): clean-steep. Wales dials per PRODUCTION 'US ADOPTION DIALS'.",
  "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.html"
 },
 "area": {
  "place": "New Milford",
  "county": "Connecticut"
 }
}