{
  "sensor_id": "CEMS-STACK-01",
  "location": "Boiler Unit A - Main Exhaust Stack",
  "timestamp": "2026-09-27T02:13:04Z",
  "pm10_raw_mg_m3": 48.42,
  "pm10_normalized_mg_m3": 38.49,
  "o2_measured_pct": 8.42,
  "o2_reference_pct": 11.0,
  "flue_gas_temp_c": 154.9,
  "flue_gas_velocity_m_s": 14.68,
  "status": "NORMAL",
  "compliance": "COMPLIANT"
}