observations: usd-eur, 2026-05-13

Each row is a single (slug, date, value, unit) tuple. The composite key (slug, date) is unique. Indexed on slug and date for fast filtering. Join to <code>sources</code> on slug to get the human title and primary-source URL.

Data license: CC BY 4.0 · Data source: CalcFi Open Data — primary-source mirror

This data as json, copyable

slug date value unit
usd-eur 2026-05-13 1.1711 ratio