{
 "records": [
  {
   "charger_code": "EX-01-A",
   "observed_at": "2026-04-06T09:00:00Z",
   "metric": "contact_resistance",
   "value": 0.2679,
   "unit": "mΩ",
   "provenance": "simulated",
   "source": "Sample generator (Kelvin-style reading)"
  },
  {
   "charger_code": "EX-01-A",
   "observed_at": "2026-04-06T09:00:00Z",
   "metric": "voltage_drop",
   "value": 0.03249,
   "unit": "V",
   "provenance": "simulated",
   "source": "Normalised to 100 A"
  },
  {
   "charger_code": "EX-01-A",
   "observed_at": "2026-04-06T09:00:00Z",
   "metric": "fault_count",
   "value": 0.0,
   "unit": "count",
   "provenance": "simulated",
   "source": "CPO fault log"
  },
  {
   "charger_code": "EX-01-A",
   "observed_at": "2026-04-13T09:00:00Z",
   "metric": "contact_resistance",
   "value": 0.279,
   "unit": "mΩ",
   "provenance": "simulated",
   "source": "Sample generator (Kelvin-style reading)"
  },
  {
   "charger_code": "EX-01-A",
   "observed_at": "2026-04-13T09:00:00Z",
   "metric": "voltage_drop",
   "value": 0.03252,
   "unit": "V",
   "provenance": "simulated",
   "source": "Normalised to 100 A"
  },
  {
   "charger_code": "EX-01-A",
   "observed_at": "2026-04-13T09:00:00Z",
   "metric": "fault_count",
   "value": 0.0,
   "unit": "count",
   "provenance": "simulated",
   "source": "CPO fault log"
  },
  {
   "charger_code": "EX-01-A",
   "observed_at": "2026-04-20T09:00:00Z",
   "metric": "contact_resistance",
   "value": 0.279,
   "unit": "mΩ",
   "provenance": "simulated",
   "source": "Sample generator (Kelvin-style reading)"
  },
  {
   "charger_code": "EX-01-A",
   "observed_at": "2026-04-20T09:00:00Z",
   "metric": "voltage_drop",
   "value": 0.03241,
   "unit": "V",
   "provenance": "simulated",
   "source": "Normalised to 100 A"
  },
  {
   "charger_code": "EX-01-A",
   "observed_at": "2026-04-20T09:00:00Z",
   "metric": "fault_count",
   "value": 1.0,
   "unit": "count",
   "provenance": "simulated",
   "source": "CPO fault log"
  },
  {
   "charger_code": "EX-01-A",
   "observed_at": "2026-04-27T09:00:00Z",
   "metric": "contact_resistance",
   "value": 0.2672,
   "unit": "mΩ",
   "provenance": "simulated",
   "source": "Sample generator (Kelvin-style reading)"
  },
  {
   "charger_code": "EX-01-A",
   "observed_at": "2026-04-27T09:00:00Z",
   "metric": "voltage_drop",
   "value": 0.03215,
   "unit": "V",
   "provenance": "simulated",
   "source": "Normalised to 100 A"
  },
  {
   "charger_code": "EX-01-A",
   "observed_at": "2026-04-27T09:00:00Z",
   "metric": "fault_count",
   "value": 0.0,
   "unit": "count",
   "provenance": "simulated",
   "source": "CPO fault log"
  }
 ]
}