Finding F-0409

“Based on the results during lecture, the CO2 concentration has exceeded 1000ppm which is recommended by ASHRAE for indoor air quality in each of the lecture hall.”

Associations of Indoor Carbon Dioxide Concentration and Symptoms of Sick Building Syndrome in Air-Conditioned Lecture Halls. Page 11. CKB 0357

Structure

Factor: Carbon dioxide (CO₂)
Population: university students
Setting: air-conditioned lecture hall, LK
Study design: cross-sectional study of five air-conditioned lecture halls with different occupant densities at a Sri Lankan university: CO2 and relative humidity logged at three positions during two-hour lectures, sick building syndrome questionnaire, ordinal logistic regression per lecture hall (class 4)
Sample: 5 rooms
Caveat: the 1000 ppm threshold is the authors' reading of ASHRAE, not a measured value

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.