{
  "method": "Positive DSM height above robust least-squares sloping plane fitted to exterior ring 0.4\u20132.0 m from confirmed footprint. No surveyed pre-stockpile ground. DSM 20 cm, encoded centimetres. Base \u00b10.25 m is sensitivity only, not accuracy interval.",
  "piles": [
    {
      "pile": 1,
      "volume_m3": 5422.925443922872,
      "area_m2": 2662.1465988992823,
      "coverage_pct": 100.0,
      "mean_base_m": 699.0678364876185,
      "max_height_m": 6.2717534330099625,
      "ring_fit_rmse_m": 0.5205074661160717,
      "base_plus_025_m_volume": 4891.2400191044335,
      "base_minus_025_m_volume": 6013.6849539228115,
      "base_slope_pct": 3.9009267986962923
    },
    {
      "pile": 2,
      "volume_m3": 700.6659569448548,
      "area_m2": 752.9683273869875,
      "coverage_pct": 100.0,
      "mean_base_m": 703.4528843447109,
      "max_height_m": 2.363921768930254,
      "ring_fit_rmse_m": 0.45695977076769223,
      "base_plus_025_m_volume": 531.9998364754456,
      "base_minus_025_m_volume": 881.2873126640875,
      "base_slope_pct": 15.38187121072604
    },
    {
      "pile": 3,
      "volume_m3": 805.3037543673674,
      "area_m2": 563.5463578499232,
      "coverage_pct": 100.0,
      "mean_base_m": 705.4251785004427,
      "max_height_m": 3.9741608398813923,
      "ring_fit_rmse_m": 0.08665057103498415,
      "base_plus_025_m_volume": 687.1872476151268,
      "base_minus_025_m_volume": 944.4774954009075,
      "base_slope_pct": 6.713222778761255
    },
    {
      "pile": 4,
      "volume_m3": 306.8308766426085,
      "area_m2": 1463.5006941154393,
      "coverage_pct": 100.0,
      "mean_base_m": 706.7052384987569,
      "max_height_m": 3.437803402728491,
      "ring_fit_rmse_m": 0.2918500249539241,
      "base_plus_025_m_volume": 238.6521029392661,
      "base_minus_025_m_volume": 426.0420625596442,
      "base_slope_pct": 5.550274136212205
    },
    {
      "pile": 5,
      "volume_m3": 3649.280363035261,
      "area_m2": 2186.5118730262316,
      "coverage_pct": 100.0,
      "mean_base_m": 714.7434707791939,
      "max_height_m": 6.025151486166465,
      "ring_fit_rmse_m": 2.010206728541808,
      "base_plus_025_m_volume": 3256.9162129449855,
      "base_minus_025_m_volume": 4057.238848713387,
      "base_slope_pct": 6.7104215518356565
    },
    {
      "pile": 6,
      "volume_m3": 3511.3519090116192,
      "area_m2": 2470.0048882455544,
      "coverage_pct": 100.0,
      "mean_base_m": 709.8343084738844,
      "max_height_m": 4.986619996180366,
      "ring_fit_rmse_m": 1.1860497979306575,
      "base_plus_025_m_volume": 2956.570245122174,
      "base_minus_025_m_volume": 4084.9200290909325,
      "base_slope_pct": 16.92899274763907
    }
  ]
}