Finding F-0505

“The average concentration values of TVOC (total volatile organic compounds) ranged from 554 μg/m3 to 2518 μg/m3 , of CO2 from 1055 ppm to 2050 ppm, of NH3 (Ammonia) from 843.2 μg/m3 to 1403.4 μg/m3 , of PM2.5 from 25.1 μg/m3 to 89.9 μg/m3 , and of PM10 from 63.7 μg/m3 to 307.4 μg/m3 .”

Vasile et al. Pollution levels in indoor school environment - case studies (2024). Atmosphere. Page 2. CKB 0090

Structure

Factor: Carbon dioxide (CO₂)
Population: school and kindergarten children
Setting: classroom, RO
Study design: two experimental monitoring campaigns of VOCs, inorganic compounds (CO2, NH3) and particulate matter in seven classrooms of public schools and kindergartens in Romania, with a heat recovery ventilation intervention in one case (class 4)
Effect: mean 2050
Averaging time: campaign average per classroom
Caveat: the sentence gives ranges of classroom averages across the seven classrooms; the CO2 ends are recorded as two rows, the other pollutants are carried in extra

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.