ECB reference rate, monthly average
ECB-PLNExchange rates (ECB)·monthly·PLN per EUR·2021-01 → 2026-09
Check a claim
Pick two months (or click an idx: ID anywhere in the app). The change is (later ÷ earlier − 1) × 100, the way the arena computes it. Blue shading: a window the arena accepts; yellow: one it calls irrelevant.
✓ The arena accepts this window (≤ 12 months apart, ends within the last 12 months of the data).
ECB reference rate, monthly average changed +2.0% from 2025-09 to 2026-09 (idx:ECB-PLN@2025-09, idx:ECB-PLN@2026-09).
Type the % someone claims for this window (ours or a supplier's). The arena verifies within ±0.5 percentage points.
Claims made with this index in our runs
Supplier claims are checked here against the data; ours carry the arena's verdict from the supplier's reply. Identical claims across runs are merged.
No claims with this index in our runs yet.
About this series
- Source
- ecb
- Licence
- ECB (free reuse with source)
- Data URL
- https://data-api.ecb.europa.eu/service/data/EXR/M.PLN.EUR.SP00.A?format=csvdata&startPeriod=2020-10
- Months
- 69 (2021-01 → 2026-09)