529 23rd St S, Arlington, VA · 1.2 mi from the Pentagon · tracked as an inverse indicator
Eight-week average of readings above zero, by weekday. This is the shape of an ordinary week at this venue — the baseline the index measures departures from, not a forecast.
Coordinates come from the place record the scraper matched, so the map shows exactly where these readings are measured.
Crystal City Sports Pub is tracked as an inverse indicator, and only between 5pm and 2am Eastern. Its reading is subtracted from the composite rather than added: busy bars suggest an ordinary night out, which makes a simultaneous pizza spike less notable. Quiet bars alongside busy restaurants is the pattern the index exists to isolate. Outside those hours the term carries no information and is dropped entirely.