US Sauna & Cold Plunge Venue Data

Cold plunge, sauna and contrast-therapy venues across the US metros that findsaunaplunge.com covers. Every record carries the date its details were last checked (lastVerified) and a status stating how it was checked. Published temperatures and prices are read from each venue's own pages. On the live site every temperature and price shows the page it came from, the date it was read and the quote that supports it. An absent field means the venue does not publish that detail. It never means zero. Each release is a monthly snapshot of the live feed at findsaunaplunge.com/api/v1/venues.json: the feed exactly as published (JSON), a flat CSV with one row per venue, the metros covered with their venue counts, and a SNAPSHOT.md stating when it was taken and the headline counts. The national summary, with denominators on every figure, is at findsaunaplunge.com/data/us-sauna-cold-plunge/. The figures describe this dataset's coverage, not the whole US market. Please quote denominators with numbers.