Data is aggregated into ~150 m cells for local detail, pooled into ~3 mile areas as you zoom out, and into wide regional areas at the widest zoom — all built from 15-minute windows on contributors' phones, published only after enough independent reports cover an area (a k-anonymity threshold), and cached 15–60 minutes. It is approximate and community-reported — never precise or real-time. Community sharing is currently available in the United States.