Finding F-1138

“For TVOC, both facility types exhibited a marked reduction after designation, with mean levels decreasing from 28.9 ppb to 17.9 ppb in billiard halls and from 30.5 ppb to 18.8 ppb in screen golf ranges.”

Environmental monitoring and smoking exposure before and after the designation of non-smoking areas in indoor sports facilities (2026). Environ Anal Health Toxicol. Page 4. CKB 1606

Structure

Source: Tobacco smoke (secondhand smoke)
Factor: Total volatile organic compounds (TVOC)
Setting: screen golf range, KR
Study design: before-and-after monitoring in billiard halls and screen golf ranges in Korea: total volatile organic compounds, nitrogen dioxide and PM2.5 measured before and after the venues were designated non-smoking, against the 24-hour guidelines of the Korean Ministry of Environment (class 3)
Effect: mean

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.