Where and when a neighbourhood's crowd rose sharply above its own normal range — found from anonymised movement data, then each crowd read for who came, where they travelled from, and what likely drew them. Big concert and stadium venues are filtered out to focus on heartland and community life.
Figures are panel devices, not head counts — the panel represents roughly 1 in 40 residents.
MessyMobility SG Night Economy — nightlife 6pm–6am →
A spike is a ~150 m geohash cell whose share of the island-wide panel, in a given hour, rose far above its own same-hour-of-week baseline (robust z ≥ 5, ≥ 50 devices, ≥ 3× typical). Adjacent cell-hours are clustered into one event and the window trimmed to the longest contiguous burst. The time-series chart shows that day's hourly crowd against the typical same-weekday band. Composition and origin cover home-anchored devices only (see each card's coverage); lift compares the crowd to the island average. Confidence is honest: