80% forecast-interval widths by series and horizon for all 24 non-void ledger rows (UNRATE, PCOPPUSDM; origins 2026-08-01 / 2026-07-01). band_width = q90 - q10; rel_width_pct = band_width / median * 100. Zero scored rows exist as of 2026-09-12, so this measures interval geometry only, not coverage.