“…However, the experimental observations and results of recent computational fluid dynamics (CFD) research papers [2,6,7] demonstrate that radon concentration in living areas might markedly deviate from average values. Herewith, it is also worth including in the analysis of the entire process those studies focusing on the modeling of the impact of the external environment (i.e., atmospheric values such as air wind velocity, permeability as a characteristic of soil) on radon entry into houses [8,9]. The variety and interplay of different factors affecting the level of radon concentration in living areas motivate researchers to further scrutinize the details of the phenomena.…”