RadonFAN data

The dataset contains long-term indoor radon (Rn-222) measurements collected by the RadonFAN system in two underground galleries at ITEFI-CSIC (Madrid, Spain). Data were recorded every 10 minutes from October 2019 to December 2024 using low-cost radon sensors integrated into an IoT infrastructure. The dataset includes over 74,000 samples for Gallery 1 and 57,000 samples for Gallery 2, exhibiting different temporal dynamics: Gallery 1 shows relatively stable behavior, while Gallery 2 presents higher variability and faster radon increases. The dataset is designed for time-series classification, focusing on the anticipation of radon threshold exceedances for preventive ventilation control.