Based on community and nationwide radon surveys with long-term radon measurements in a total of 21,818 homes, radon distribution characteristics in Canada have been reassessed with the population-weighted arithmetic mean radon concentration of 82 Bq m?3, geometric mean radon concentration of 55 Bq m?3, and geometric standard deviation of 2.45. The major pathway for the influx of radon into Canadian homes is from the surrounding soil. Statistical analysis has shown that radon levels in houses with a basement are, on average, about twice the radon levels in houses without a basement, and houses with private wells also tend to have higher radon concentrations than houses with municipal water supply.
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机译：基于社区和全国范围内的氡调查与长期氡测量的总21818个家庭,氡分布特征在加拿大已经重新评估以来按人口加权算术平均氡82 Bq的浓度?的浓度55 Bq m ?标准偏差为2.45。氡的涌入到加拿大房屋周围的土壤。表明,氡水平在房子的地下室里是平均氡水平的两倍呢房子没有地下室,和房屋私人水井也往往有更高的氡浓度比房屋市政水供应。
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