Finding F-1640

“The results show that the system can achieve an 86% reduction of the radon concentration, maintaining it low 90% of the time while having the ventilation system on during only 34% of the time.”

Development of an automatic low-cost air quality control system - a radon application… (2021). Applied Sciences. Page 1. CKB 0424

Structure

Factor: Radon
Intervention: Ventilation
Study design: automatic low-cost control system for radon: a ventilation system driven by a radon forecast, tested in a research room against the same room without the system (class 4)
Effect: other 86
Caveat: the study adds that the system kept the concentration low 90% of the time while the ventilation ran only 34% of the time; it is one research room, not a dwelling in use

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.