Fig. 6

Prediction results for soil radon exhalation rates (Bq \(\hbox {m}^{-2}\) \(\hbox {day}^{-1}\)) using the ANN model, with \(\hbox {R}^{2}\) performance metric.

Prediction results for soil radon exhalation rates (Bq \(\hbox {m}^{-2}\) \(\hbox {day}^{-1}\)) using the ANN model, with \(\hbox {R}^{2}\) performance metric.