Finding F-0042

“The average school-day CO2 concentration was 841 ppm (SD: 405 ppm) and the 99.9th percentile of daily maxima was 5080 ppm.”

Ge Decision tools for schools using continuous indoor air quality monitors: a case study of CO2 in Boston Public Schools (2025). Lancet Reg Health Am. Page 1. CKB 1363

Structure

Factor: Carbon dioxide (CO₂)
Population: students
Setting: classroom, US
Study design: continuous monitoring of Boston public school classrooms over a school year, 245 million measurements (class 4)
Effect: other 5080

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.