Finding F-0427

“During heating season campaign performed in school D, CO2 concentration of 1000 ppm was exceeded after the first class and daily mean value was about 2000 ppm on each school day.”

Impact of CO2 concentration on indoor air quality and correlation with relative humidity and indoor air temperature in school buildings, Serbia (2015). Page 6. CKB 0335

Structure

Factor: Carbon dioxide (CO₂)
Population: elementary school children
Setting: classroom, RS
Study design: measurement campaigns of CO2, indoor air temperature and relative humidity in classrooms of four naturally ventilated elementary schools in Serbia (three urban, one rural) in heating and non-heating seasons, with outdoor reference measurements (class 4)
Effect: mean 2000
Averaging time: daily mean on school days, heating season

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.