{
  "author": "Alisson Bento",
  "headline_observation_year": 2024,
  "scope": "Aragón and three provinces, with source-provided Spain total comparator only. Not a new census or a complete Spain regional study.",
  "bulletin_date": "2026-01-26",
  "source_http_last_modified": "2026-07-08",
  "retrieval_date": "2026-10-28",
  "raw_source_hashes": {
    "aragon-A01.px": "62c3f2b185c810f6db9f7bf7761515d7178bc3186aa8e06e39b8b0c6e5c8e073",
    "aragon-A03.px": "b110016bded33c8a6ed3c790f27e07a9feca7a0a5371618b06856ad26a765f27",
    "aragon-C03.px": "c2baf74f68068874e3c6fdfae948529fce106468da2d0c387b13728a9c69e868",
    "aragon-E01.px": "13e21be3257814a0e20ad760c69f2ec930bd06408c31293f07f9f5e46045863a",
    "aragon-E02.px": "c6316518d9bc2077ece33dfcaa4a717cdb627ab3249876f75bd2eb72b28bae8b"
  },
  "units": "Library administrative units, questionnaire returns, registrations in thousands and visits in thousands are distinct. Registrations are not unique people; visits are events.",
  "questionnaire_definition_url": "https://www.larioja.org/larioja-client/cm/estadistica/images?idMmedia=1631399",
  "questionnaire_definition": "Official 2024 questionnaire: administrative units report the sum for dependent service points; administrative units are not buildings.",
  "encoding": "Source PC-Axis internal ISO-8859-15 declaration followed despite HTTP UTF-8 label; derivatives UTF-8.",
  "missingness": "435 source cells,72 explicit missing values retained; numeric zero stays zero. 15summary rows and25broad-type2024 rows. Older source-year cells retained for traceability, not trend interpretation.",
  "source_discrepancy": "26January2026 bulletin narrative labels 4,336,600 as registered users; its table and E01 give396.8thousand registrations, while E02 gives4,336.6thousand visits. Literal disagreement, no acknowledged agency correction.",
  "nonreconciliation": "Province visit cells sum4,337.0thousand; Aragón regional cell4,336.6thousand. Difference0.4thousand, cause unknown, source cells preserved.",
  "service_limit": "Electronic-collection item has high nonresponse; low positive reports cannot prove absent digital access.",
  "transformations": "Decoding, reshaping, arithmetic response/type shares and source-consistency annotations; no person-level exactness, engagement ratios, rankings or causal estimates.",
  "reproduction": "Copy downloads to a separate folder. Place matching frozen aragon-A01.px, aragon-A03.px, aragon-C03.px, aragon-E01.px, aragon-E02.px under sources/. Run python analysis.py. Standard library; hashes verified against source-hashes.json. Script writes derived tables and original chart concepts. Raw PDFs, logos and other source branches are not bundled.",
  "rights": "Source data: Gobierno de Aragón; IAEST / Ministerio de Cultura, Estadística de Bibliotecas; CC BY 4.0 under data-specific terms. Original explanation/calculations/code: Alisson Bento. Source/date/change attribution, no endorsement."
}