Finding F-0412

“During both monitorings, the maximum levels of carbon dioxide were largely above 1000ppm, commonly used as a warning threshold limit for acceptable air quality in terms of comfort (related with temperature and humidity), body odor and short breathing.”

A campus sustainability initiative - Indoor air quality monitoring in classrooms… (2015). 2015 XVIII AISEM Annual Conference. Page 4. CKB 0013

Structure

Factor: Carbon dioxide (CO₂)
Population: university students
Setting: classroom, IT
Study design: continuous monitoring of CO2, relative humidity and temperature with a low-cost non-dispersive infrared data logger in two lecture classrooms (R1, R2) of the University of Ferrara during lessons on two consecutive winter days, with air change rate estimated from CO2 decay (class 4)
Caveat: the 1000 ppm threshold is the authors' framing, not a measured value; the maxima themselves are printed only in Table 1

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.