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        }
      }
    ],
    "as_cast_status": "not_established_in_source_analysis",
    "as_cast_reason": "The paper excludes the as-cast sample from these superconducting specific-heat fits; transition broadening prevents evaluating its gap ratio.",
    "interpretation_scope": "Source fit and model-ratio estimates. Author discussion of possible strong coupling does not establish a global pairing classification or electron–phonon λ."
  },
  "tc_2023": {
    "source_id": "2023",
    "source_locator_id": "2023-table-1",
    "label": "2023 Table 1: original reported transition temperatures",
    "columns": [
      {
        "field": "tc_k",
        "label": "Tc",
        "raw_unit": "K"
      }
    ],
    "rows": [
      {
        "sample_id": "as-cast",
        "cells": {
          "tc_k": {
            "raw_value": "7.9",
            "raw_unit": "K",
            "normalized_value": null,
            "role": "source_table_transition_temperature",
            "status": "reported",
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      {
        "sample_id": "400-c",
        "cells": {
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            "raw_value": "8.4",
            "raw_unit": "K",
            "normalized_value": null,
            "role": "source_table_transition_temperature",
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      },
      {
        "sample_id": "800-c",
        "cells": {
          "tc_k": {
            "raw_value": "9.0",
            "raw_unit": "K",
            "normalized_value": null,
            "role": "source_table_transition_temperature",
            "status": "reported",
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      },
      {
        "sample_id": "1000-c",
        "cells": {
          "tc_k": {
            "raw_value": "8.7",
            "raw_unit": "K",
            "normalized_value": null,
            "role": "source_table_transition_temperature",
            "status": "reported",
            "source_locator_id": "2023-table-1",
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    ],
    "criterion_context_id": "2023-tc-definition",
    "cross_publication_relation": "Distinct source reports; no automatic reconciliation with 2024 Table 2 values."
  },
  "limitations": [
    "Source sample labels describe preparation groups, not typed catalogue sample or state IDs.",
    "Annealing temperature and four-day hold are processing conditions, not superconducting measurement conditions. As-cast is not represented as a 0 °C anneal.",
    "A formula match, a shared author group or a citation does not establish the same physical specimen across the papers.",
    "Original PDF and full derived text remain private; metadata publishes source values, paraphrased context and hash-only locations.",
    "No pressure value is supplied from missing source fields, and zero-temperature fitted values do not establish measurements at 0 K.",
    "No scientific acceptance, human gold benchmark, canonical promotion, new DFT or ML permission is created."
  ],
  "counts": {
    "sources": 2,
    "source_sample_labels": 5,
    "phase_rows_2024": 10,
    "phase_rows_2023": 8,
    "parameter_fields": 15,
    "parameter_cells": 75,
    "tc_cells_2023": 4,
    "gap_fit_samples_2024": 4,
    "gap_fit_cells_2024": 16,
    "reported_value_cells": 210,
    "source_blank_cells": 9,
    "independent_experiment_count_established": false
  }
}
