Notes: Although a national database it is still under the construction, we are established the way of receiving the information for that. Within the tasks in National Radon Action plan we provide detectors for free for people, who were implemented in the home or buildings with high public occupancy the radon mitigation measures, in order to check efficiency of the measures, as well as to receive the information of the measures. There are no much data collected yet because on the one hand there are not many buildings, in which the mitigation measure have been implement in Bulgaria and on the other there is not enough advertising for that. However we are still at the beginning of implementing our plan.  