Tsapalov, A., Kovler, K., 2018. Indoor radon regulation using tabulated values of temporal radon variation. Journal of Environmental Radioactivity 183, 59–72

The experimental and tabulated values of KV(t) and also the values of the coefficient of temporal EEC variation depending on the mode and duration of the measurements were obtained. [...] Dependence of the coefficients of temporal variations of radon (a) and EEC (b) on the minimum duration of one of 2 (top) and 4 (bottom) measurements with an interval of 6 or 3 months, respectively, by the results of annual monitoring in the experimental rooms 20 Coefficient of temporal EEC variation Coefficient of temporal radon variation Coefficient of temporal EEC variation Coefficient of tempor. [...] A comparison of the values of the coefficients of temporal variation of radon and EEC de- pending on the duration of continuous measurements and the temperature effect; the data for Russia are taken from (MG 2.6.1.037, 2015) 22 Probably, the tabulated values of the coefficient of temporal radon variation for the continuous measurements in the period from 1 to 8 months are overestimated (Figure 4(a. [...] In order to verify and clarify the data reported in Table 2, we would like to encourage the col- leagues who conduct radon surveys in different countries of the world to send the results of annual monitoring of indoor radon (with a registration period of 1 to 6 hours) to the authors in the form of electronic tables, taking into account the requirements for the selection of experimental rooms, ac-. [...] However, in some cases the re- liability of the result of the indoor radon evaluation can be reduced by the influence of hidden geo- logical processes and degradation of the insulation of the building foundation.