{
  "site_name": "Illinois Landfill Inc. (IL)",
  "landfill_id": 1872,
  "lat": 40.445375,
  "lon": -87.63883,
  "source": "mass_run",
  "measurement": {
    "hard_fail": false,
    "native_srs_label": "UTM16 WGS84 EPSG:32616",
    "epoch_a_date_nominal": "2012",
    "epoch_b_date_nominal": "2021",
    "epoch_dates_independently_verified": true,
    "usable_coverage_pct": 99.8,
    "n_stable_control_cells": 82512,
    "evidence_refs": [
      "epoch_a: kind=ept label='USGS_LPC_IL_DOT_District5_VermilionCo_2012_LAS_2017' n_ground_points=1240082 runtime_s=14.5",
      "epoch_b: kind=ept label='IL_SouthCentral_1_2021' n_ground_points=4058386 runtime_s=30.4"
    ],
    "meta": {
      "epoch_a": {
        "runtime_s": 14.485944336000102,
        "n_points": 1240082,
        "text_bytes": 38442554
      },
      "epoch_b": {
        "runtime_s": 30.421191752999903,
        "n_points": 4058386,
        "text_bytes": 125809978
      },
      "grid_nx": 500,
      "grid_ny": 500
    },
    "stable_control_offset_m": 0.017,
    "stable_control_sigma_m": 0.0376,
    "detection_threshold_m": 0.1128,
    "volume_change_m3": 10.5,
    "uncertainty_m3": 0.7,
    "uncertainty_to_change_ratio": 0.0622,
    "classification": "DECISION_USEFUL_CHANGE_DETECTED",
    "landfill_id": 1872,
    "name": "Illinois Landfill Inc.",
    "state": "IL",
    "lat": 40.445375,
    "lon": -87.63883,
    "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"
  }
}