One level line per year holds 2,516 daily Brent prices, December 2016 to November 2026. Hatch length shows the percentage below the highest price reached within this window; a new high has no hatch. The slant creates Zöllner’s tilt illusion. Tap a day; arrows step days or years.

U.S. EIA, Europe Brent Spot Price FOB (RBRTE), daily, public domain. One length scale across all years; hatch angle is decorative. Every saved daily price remains on small screens. Code: Luke Steuber, MIT.

DataLuke SteuberData Poems