[
  {
    "coa_id": "c_001",
    "lot_raw": "KI-24-0917",
    "item_code": "TENSILE",
    "reported": 511.4,
    "unit": "MPa",
    "spec_min": 490,
    "spec_max": 540,
    "issued_at": "2024-09-17",
    "source_line": "인장강도 511.4 MPa (규격 490~540)"
  },
  {
    "coa_id": "c_002",
    "lot_raw": "KI-24-0917",
    "item_code": "THICK",
    "reported": 0.313,
    "unit": "mm",
    "spec_min": 0.3,
    "spec_max": 0.32,
    "issued_at": "2024-09-17",
    "source_line": "두께 0.313 mm (규격 0.300~0.320)"
  },
  {
    "coa_id": "c_003",
    "lot_raw": "KI-24-0917",
    "item_code": "MOISTURE",
    "reported": 0.4,
    "unit": "%",
    "spec_min": 0,
    "spec_max": 0.5,
    "issued_at": "2024-09-17",
    "source_line": "수분율 0.40 % (규격 0.00~0.50)"
  },
  {
    "coa_id": "c_004",
    "lot_raw": "KI-24-0918",
    "item_code": "TENSILE",
    "reported": 512,
    "unit": "MPa",
    "spec_min": 490,
    "spec_max": 540,
    "issued_at": "2024-09-18",
    "source_line": "인장강도 512.0 MPa (규격 490~540)"
  },
  {
    "coa_id": "c_005",
    "lot_raw": "KI-24-0918",
    "item_code": "THICK",
    "reported": 0.318,
    "unit": "mm",
    "spec_min": 0.3,
    "spec_max": 0.32,
    "issued_at": "2024-09-18",
    "source_line": "두께 0.318 mm (규격 0.300~0.320)"
  },
  {
    "coa_id": "c_006",
    "lot_raw": "KI-24-0919",
    "item_code": "WIDTH",
    "reported": 1247,
    "unit": "mm",
    "spec_min": 1245,
    "spec_max": 1255,
    "issued_at": "2024-09-19",
    "source_line": "폭 1247 mm (규격 1245~1255)"
  },
  {
    "coa_id": "c_007",
    "lot_raw": "KI-24-0921",
    "item_code": "TENSILE",
    "reported": 510,
    "unit": "MPa",
    "spec_min": 490,
    "spec_max": 540,
    "issued_at": "2024-09-21",
    "source_line": "인장강도 510.0 MPa (규격 490~540)"
  },
  {
    "coa_id": "c_008",
    "lot_raw": "KI-24-0922",
    "item_code": "COLOR_DE",
    "reported": 0.7,
    "unit": "",
    "spec_min": 0,
    "spec_max": 1,
    "issued_at": "2024-09-22",
    "source_line": "색차 ΔE 0.7 (규격 1.0 이하)"
  },
  {
    "coa_id": "c_009",
    "lot_raw": "KI-24-0923",
    "item_code": "MOISTURE",
    "reported": 0.28,
    "unit": "%",
    "spec_min": 0,
    "spec_max": 0.5,
    "issued_at": "2024-09-23",
    "source_line": "수분율 0.28 % (규격 0.00~0.50)"
  },
  {
    "coa_id": "c_010",
    "lot_raw": "KI-24-0924",
    "item_code": "WIDTH",
    "reported": 1249.5,
    "unit": "mm",
    "spec_min": 1245,
    "spec_max": 1255,
    "issued_at": "2024-09-24",
    "source_line": "폭 1249.5 mm (규격 1245~1255)"
  },
  {
    "coa_id": "c_011",
    "lot_raw": "KI-24-0925",
    "item_code": "TENSILE",
    "reported": 497.5,
    "unit": "MPa",
    "spec_min": 490,
    "spec_max": 540,
    "issued_at": "2024-09-25",
    "source_line": "인장강도 497.5 MPa (규격 490~540)"
  },
  {
    "coa_id": "c_012",
    "lot_raw": "KI-24-0926",
    "item_code": "TENSILE",
    "reported": 503,
    "unit": "MPa",
    "spec_min": 490,
    "spec_max": 540,
    "issued_at": "2024-09-26",
    "source_line": "인장강도 503.0 MPa (규격 490~540)"
  }
]