Finding F-0463

“As the main results of the study, ventilation conditions were generally adequate in all the tests carried out, regardless of the ventilation strategy used, with average CO2 concentration levels of between 450 and 670 ppm.”

Miranda Ventilation conditions and their influence on thermal comfort in examination classrooms in times of COVID-19. A case study in a Spanish area with Mediterranean climate (2022). International journal of hygiene and environmental health. Page 2. CKB 8398

Structure

Factor: Carbon dioxide (CO₂)
Intervention: Natural ventilation
Population: university students during examinations
Setting: examination classroom, ES
Study design: case study of natural ventilation through windows during on-site winter examinations in classrooms of the University of Extremadura (Badajoz, Spain) during the COVID-19 pandemic: in situ CO2, temperature and humidity measurements in a series of examination tests with different window-opening strategies (class 4)
Effect: mean 670
Averaging time: average over one examination test
Caveat: the sentence gives a range across tests; the two ends are recorded as two rows

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.