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        "printed_end": "2026-05-30",
        "supplement_end": "2026-05-30"
      }
    ],
    "portal_values": [
      261
    ],
    "portal_raw_date_discrepancies": []
  },
  {
    "start": "2026-08-23",
    "end": "2026-08-29",
    "report_label": "2026-09-02",
    "yard": "Kirk",
    "measure": "inventory",
    "reasons": [
      "original_values_conflict"
    ],
    "candidates": [
      {
        "file": "Chicago%20Data%202026-09-02.xlsx",
        "url": "https://www.stb.gov/wp-content/uploads/files/rsir/CTCO/Chicago%20Data%202026-09-02.xlsx",
        "value": 1947,
        "raw_value": 1947,
        "locator": "STB Report!B17",
        "date_valid": true,
        "kind": "primary_workbook",
        "printed_start": "2026-08-23",
        "printed_end": "2026-08-29",
        "supplement_end": "2026-08-29"
      },
      {
        "file": "Chicago%20Terminal%20(AAR)%202026-09-02.pdf",
        "url": "https://www.stb.gov/wp-content/uploads/files/rsir/CTCO/Chicago%20Terminal%20(AAR)%202026-09-02.pdf",
        "value": 1957,
        "raw_value": "1,957",
        "locator": "PDF inventory table, 7 Day Avg column",
        "date_valid": true,
        "kind": "supplementary_pdf",
        "printed_start": null,
        "printed_end": "2026-08-29",
        "supplement_end": "2026-08-29"
      },
      {
        "file": "Chicago%20Data%202026-09-02.xlsx",
        "url": "https://www.stb.gov/wp-content/uploads/files/rsir/CTCO/Chicago%20Data%202026-09-02.xlsx",
        "value": 1957,
        "raw_value": 1957,
        "locator": "Chicago Terminal Wkly Info!E13",
        "date_valid": true,
        "kind": "supplementary_sheet",
        "printed_start": null,
        "printed_end": "2026-08-29",
        "supplement_end": "2026-08-29"
      }
    ],
    "portal_values": [
      1947
    ],
    "portal_raw_date_discrepancies": []
  },
  {
    "start": "2026-09-13",
    "end": "2026-09-19",
    "report_label": "2026-09-23",
    "yard": "Gibson",
    "measure": "dwell",
    "reasons": [
      "source_identity_unresolved"
    ],
    "candidates": [
      {
        "file": "Chicago Data 2026-09-23.xlsx",
        "url": "https://www.stb.gov/wp-content/uploads/files/rsir/CTCO/Chicago%20Data%202026-09-23.xlsx",
        "value": 15,
        "raw_value": 15,
        "locator": "Chicago Terminal Wkly Info!E27; source label IHB Autos, not verified as Gibson",
        "date_valid": true,
        "kind": "supplementary_sheet",
        "printed_end": "2026-09-19"
      }
    ],
    "portal_values": [],
    "portal_raw_date_discrepancies": [],
    "note": "The source and portal report IHB Autos dwell of 15 hours. Historical identity with Gibson is unresolved. Gibson inventory is independently reported under its own label; no dwell value is assigned to Gibson."
  }
]