{
  "site_name": "H.O.D. Landfill (IL)",
  "landfill_id": 2164,
  "lat": 42.476,
  "lon": -88.082,
  "source": "mass_run",
  "measurement": {
    "hard_fail": false,
    "native_srs_label": "UTM16 WGS84 EPSG:32616",
    "epoch_a_date_nominal": "2007",
    "epoch_b_date_nominal": "2016",
    "epoch_dates_independently_verified": true,
    "usable_coverage_pct": 99.9,
    "n_stable_control_cells": 76588,
    "evidence_refs": [
      "epoch_a: kind=ept label='ARRA-IL_LakeCo_2007' n_ground_points=799041 runtime_s=9.7",
      "epoch_b: kind=ept label='USGS_LPC_IL_4County_Lake_2016_LAS_2019' n_ground_points=7708535 runtime_s=110.5"
    ],
    "meta": {
      "epoch_a": {
        "runtime_s": 9.73792223800001,
        "n_points": 799041,
        "text_bytes": 24770283
      },
      "epoch_b": {
        "runtime_s": 110.53209546100015,
        "n_points": 7708535,
        "text_bytes": 238964597
      },
      "grid_nx": 500,
      "grid_ny": 500
    },
    "stable_control_offset_m": -0.1206,
    "stable_control_sigma_m": 0.2248,
    "detection_threshold_m": 0.6744,
    "volume_change_m3": -642.0,
    "uncertainty_m3": 15.4,
    "uncertainty_to_change_ratio": 0.024,
    "classification": "DECISION_USEFUL_CHANGE_DETECTED",
    "landfill_id": 2164,
    "name": "H.O.D. Landfill",
    "state": "IL",
    "lat": 42.476,
    "lon": -88.082,
    "site_note": "poligono sintetico (buffer 200x200m sobre coordenada LMOP real), NO el parcel legal exacto",
    "datum_note": "UTM WGS84, no NAD83(2011) especifico por estado - ver docstring de lmop_mass_runner.py"
  }
}