Table 3.

Proposed indexes.

	Soil	BM
index	GRC 1 [26]	γ + α
PROS	Geogenic approach. Technically simple. Few input parameters. Good predictive capacity.	Technically simple. E measurements technique based on radon activity concentrations.
CONS	Neglected γ radiation background.	Necessity to standardize E technique.

¹ Geogenic RadCampania.