Finding F-0481

“In the last part (11, 12, 14 October), during minimal ventilation (once to twice per day), CO2 concentration in the range of 400–2045 ppm (average 1033 ± 424 ppm) was obtained.”

Dovjak et al. Analysis of Ventilation Efficiency as Simultaneous Control of Radon and Carbon Dioxide Levels in Indoor Air Applying Transient Modelling (2022). Page 10. CKB 0342

Structure

Factor: Carbon dioxide (CO₂)
Intervention: Natural ventilation
Population: apartment occupants
Setting: apartment, SI
Study design: continuous measurement of radon-222 and CO2 with meteorological parameters in one occupied apartment (about 27 m2) in Ljubljana, Slovenia, 3-15 October, under recorded ventilation schedules (frequent, poor, none), followed by CONTAM 3.4 transient simulations of design ventilation rates (class 4)
Effect: mean 1033
Averaging time: average over 11, 12 and 14 October, ventilated once to twice per day
Caveat: the ± value is not named in the sentence

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.