Finding F-0423

“The urban school had an average CO2 concentration of 1152 ppm, while the rural school had an average of 1981 ppm.”

Gangwar et al. Carbon dioxide as an indicator of bioaerosol activity and human health in K-12 school systems: a scoping review of current knowledge (2024). Page 8. CKB 0353

Structure

Factor: Carbon dioxide (CO₂)
Population: elementary school children
Setting: classroom, US
Study design: the authors' own CO2 measurement campaign in classrooms, cafeteria and reception areas of two elementary schools (one urban, one rural) in a North Central County of Florida, reported inside a scoping review of CO2 as an indicator of bioaerosol activity in K-12 schools; sampling details in the supplementary material (class 4)
Effect: mean 1981
Caveat: own measurement reported inside a scoping review; the sampling campaign is described only in the supplementary material

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.