Finding F-0425

“Overall, CO2 levels at the two elementary schools exceeded the safe and healthy limit of 1000 ppm in 66.6% and 90.9% of measurements recorded at the urban and rural schools, respectively.”

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: share-above 90.9
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.