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  "structure_own_ways": 7,
  "structure_mask_ranges_m": [
   [
    8265.3,
    8281.9
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  ],
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   5.0
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   "stations_resolved": 541,
   "width_median_m": 6.75,
   "width_p10_m": 5.5,
   "width_min_m": 1.5,
   "width_max_m": 12.0,
   "bounded_share": 0.24,
   "unbounded_share": 0.76,
   "confidence_median": 0.0,
   "width_median_bounded_m": 6.75,
   "window_m": [
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    10752.0
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   "width_at_max25_m": 6.5,
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   "single_track": false,
   "single_track_rule": "PROVISIONAL (2026-09-15): width_p10_m <= 3.0 m with bounded_share >= 0.6; recorded, not a rule",
   "status": "ok",
   "source": "dtm",
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   "window_station_m": 5.0,
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   "step_m": 0.25,
   "level_tol_m": 0.12,
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   "stations_failed": 0,
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    "stations_resolved": 541,
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    "source": "dsm",
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    "stations_failed": 0
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  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Noir\u00e9table",
  "county": "Loire",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 }
}