Finding F-0430

“Mean outdoor CO2 concentration level for school C was 424 ppm in heating season and 575 ppm in non-heating season.”

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: outdoors at the school, 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 424
Averaging time: campaign mean, 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.