Finding F-0950

“Similarly, median CO levels in WBs were 22.5 ppm on weekdays and 27.9 ppm on weekends, compared to 0.8 and 0.71 ppm in non-WBs, respectively.”

Indoor Air Pollutants of PM 2.5 , Carbon Monoxide, Nicotine, and Carcinogens in Waterpipe Bars (2026). Nicotine Tob Res. Page 4. CKB 1107

Structure

Source: Water pipe smoking
Factor: Carbon monoxide (CO)
Setting: waterpipe bar, HK (weekday evening)
Study design: cross-sectional measurement study in Hong Kong: PM2.5, carbon monoxide, airborne nicotine, volatile organic compounds and polycyclic aromatic hydrocarbons sampled for two hours in eight waterpipe bars and six bars without waterpipes, on a weekday and a weekend evening (class 4)
Effect: median 22.5
Averaging time: 2 h
Sample: 8 rooms

A Finding records what one published document states, verbatim and with its page. It is not a conclusion of Coridum; see the Claims that build on it.