Upstream revisions
Provisional or corrected source data may replace an earlier snapshot. Use the latest displayed source timestamp and status when comparing versions.
Product corrections
Confirmed calculation, labelling or presentation errors are corrected as soon as reasonably practical. Material methodology changes are documented instead of silently changing the stated formula.
Reporting an issue
Submit the affected URL, instrument or dataset, timestamp, observed value and an authoritative reference through the established support channel. Reports are assessed for reproducibility and source authority.
Unavailable data
Temporary API failures do not turn missing values into zero. The page shows an unavailable state while preserving static explanations and, where supported, the last successful timestamped snapshot.