{
  "counting_rule": "Layer records overlap; never sum as unique epidemiological variables",
  "layer_record_count": 31594,
  "layers": [
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      "layer": "main",
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      "dictionary": "main_series_scientific_dictionary.json.gz"
    },
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      "layer": "optional_2025_anchors",
      "records": 1124,
      "dictionary": "main_series_scientific_dictionary.json.gz",
      "note": "Same series identity, single2025 dependency; main historical/geography status unchanged"
    },
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      "layer": "HEALTH",
      "records": 17925,
      "dictionary": "health_chain_dictionary.json.gz"
    },
    {
      "layer": "detailed_models",
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      "dictionary": "model_chain_dictionary.json.gz"
    },
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      "layer": "source_catalog",
      "records": 6712,
      "dictionary": "source_catalog_dictionary.json.gz"
    },
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      "layer": "source_extensions",
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      "dictionary": "source_extension_dictionary.json"
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      "layer": "legacy_output_types",
      "records": 13,
      "dictionary": "retained_method_contracts.json"
    }
  ],
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}