[
  {
    "bill_id": "B01",
    "meter_id": "M01",
    "unit": "kWh",
    "usage": "1200",
    "billed_days": "30",
    "amount": "240.00",
    "currency": "USD",
    "reading_basis": "fictional actual",
    "usage_per_billed_day_kWh": "40.0000",
    "selected_amount_per_billed_day": "8.00",
    "selected_amount_divided_by_usage": "0.2000"
  },
  {
    "bill_id": "B02",
    "meter_id": "M01",
    "unit": "kWh",
    "usage": "1240",
    "billed_days": "31",
    "amount": "279.00",
    "currency": "USD",
    "reading_basis": "fictional actual",
    "usage_per_billed_day_kWh": "40.0000",
    "selected_amount_per_billed_day": "9.00",
    "selected_amount_divided_by_usage": "0.2250"
  },
  {
    "bill_id": "B03",
    "meter_id": "M01",
    "unit": "kWh",
    "usage": "1400",
    "billed_days": "28",
    "amount": "280.00",
    "currency": "USD",
    "reading_basis": "fictional actual",
    "usage_per_billed_day_kWh": "50.0000",
    "selected_amount_per_billed_day": "10.00",
    "selected_amount_divided_by_usage": "0.2000"
  }
]