{
  "site_name": "Prima Deshecha SLF (CA)",
  "landfill_id": 251,
  "lat": 33.48654,
  "lon": -117.62491,
  "source": "mass_run",
  "measurement": {
    "hard_fail": true,
    "native_srs_label": "UTM11 WGS84 EPSG:32611",
    "epoch_a_date_nominal": "2011",
    "epoch_b_date_nominal": "2018",
    "epoch_dates_independently_verified": true,
    "usable_coverage_pct": 100.0,
    "n_stable_control_cells": 82795,
    "evidence_refs": [
      "epoch_a: kind=ept label='CA_OrangeCo_2011' n_ground_points=3064200 runtime_s=19.9",
      "epoch_b: kind=ept label='USGS_LPC_CA_SoCal_Wildfires_B1_2018_LAS_2019' n_ground_points=4033900 runtime_s=22.8"
    ],
    "meta": {
      "epoch_a": {
        "runtime_s": 19.869667371000105,
        "n_points": 3064200,
        "text_bytes": 94909268
      },
      "epoch_b": {
        "runtime_s": 22.765332079000018,
        "n_points": 4033900,
        "text_bytes": 124935675
      },
      "grid_nx": 500,
      "grid_ny": 500
    },
    "stable_control_offset_m": 6.2958,
    "stable_control_sigma_m": 7.5937,
    "hard_fail_reason": "datum/alineacion: stable_control_sigma_m=7.5937 (>1.0) o |stable_control_offset_m|=6.2958 (>2.0)",
    "landfill_id": 251,
    "name": "Prima Deshecha SLF",
    "state": "CA",
    "lat": 33.48654,
    "lon": -117.62491,
    "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"
  }
}