Sources. Every displayed figure carries a source string (document + date) reachable by hover, tap or inline chip. The consolidated data layer (observatory_data.js) is generated by script from extraction CSVs in the observatory library; nothing is hand-typed into pages. Primary sources: government/board annual reports and accounts, Audit Scotland/KPMG annual audits, HIS inspection reports, C&AG/JAO reports, DHSC Assessments of Manx Care, Tynwald Hansard and written answers, ONS/NRS/PHS statistics, CAA punctuality statistics, and FOI responses held in the library.
Comparability. Jurisdictions differ in definitions, targets, reporting windows and population bases. Basis lines are mandatory on comparison rows; 3-year rolling averages (small populations) are marked and never silently mixed with single-year rates; derived figures (per-capita, per-1,000, inversions) are labelled
derived; DERIVED Sankey nodes state their derivation.
Gaps. Missing data is displayed, not hidden: red chips = no comparable public figure exists; blue chips = published somewhere we have not yet extracted (each maps to a roadmap item). Gaps are findings.
Views. The Public view uses plain language and does not draft formal requests; Politician and Management views expose question/FOI wording and benchmark framing. The view switch changes emphasis, never the underlying numbers.
Corrections. Errors:
observatory@coalfinch.com. Build log and change history: see the Roadmap page.