G20 FX Matrix (ECB reference rates)

One pair tells you a currency moved; only the full row tells you whether it was that currency's story or the dollar's. This operator computes every G20 cross from the ECB's official reference rates by EUR triangulation and presents the complete N×N matrix over four windows with vol-scaled strength ranks — so TRY's 2% and CNY's 0.3% can be compared on the same scale. Coverage is stated honestly: 14 currencies direct, SAR derived via its hard peg (in the matrix, out of the ranks), RUB suspended since 2022, ARS unavailable.