A recent challenge in research dedicated to residential exposure to radon comes from the growing number of houses retrofitted to reduce energy consumption. Efficiently insulated buildings and modern architectural solutions can lead to the accumulation of high levels of indoor pollutants. A systematic analysis was conducted in a residential complex (consisting of six houses) in order to assess the annual radon concentration and to evaluate the intensity of the relationships with various factors, such as the indoor-outdoor temperature differences, wind speed and wind direction. Three types of occupational behaviour, influencing the ventilation rate of the dwellings and, implicitly, the indoor radon activity concentration were observed. By calculating the partial correlation coefficient between the radon concentration and the wind direction, with the wind speed as the control variable, for all six houses the correlation coefficient presents negative values.

中文翻译：

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住宅区室内氡浓度的变化。

最近致力于住宅氡暴露研究的一项挑战来自越来越多的房屋经过改造以减少能源消耗。有效隔热的建筑和现代建筑解决方案会导致大量室内污染物的积累。为了评估每年氡浓度并评估与各种因素（例如室内外温差，风速和风向）的关系强度，在住宅区（由六栋房屋组成）中进行了系统分析。观察到三种类型的职业行为，影响住宅的通风率，隐含地，观察到室内氡活动浓度。通过计算氡浓度与风向的偏相关系数，