[
  {
    "line_id": "L1",
    "cal_date": "2026-03-09",
    "available_min": 960,
    "reason": null
  },
  {
    "line_id": "L1",
    "cal_date": "2026-03-10",
    "available_min": 960,
    "reason": null
  },
  {
    "line_id": "L1",
    "cal_date": "2026-03-12",
    "available_min": 480,
    "reason": "2조 결원으로 주간만 가동"
  },
  {
    "line_id": "L1",
    "cal_date": "2026-03-15",
    "available_min": 0,
    "reason": "일요일 휴무"
  },
  {
    "line_id": "L2",
    "cal_date": "2026-03-09",
    "available_min": 960,
    "reason": null
  },
  {
    "line_id": "L2",
    "cal_date": "2026-03-11",
    "available_min": 240,
    "reason": "정기보전 반일"
  },
  {
    "line_id": "L2",
    "cal_date": "2026-03-15",
    "available_min": 0,
    "reason": "일요일 휴무"
  },
  {
    "line_id": "L2",
    "cal_date": "2026-03-16",
    "available_min": 1140,
    "reason": "잔업 승인"
  },
  {
    "line_id": "L3",
    "cal_date": "2026-03-18",
    "available_min": 0,
    "reason": "정전 예고"
  },
  {
    "line_id": "L3",
    "cal_date": "2026-03-19",
    "available_min": 960,
    "reason": null
  },
  {
    "line_id": "L3",
    "cal_date": "2026-03-22",
    "available_min": 0,
    "reason": "일요일 휴무"
  },
  {
    "line_id": "L3",
    "cal_date": "2026-03-25",
    "available_min": 480,
    "reason": "정기보전 반일"
  }
]