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. 2019 Jan;196:240–252. doi: 10.1016/j.jenvrad.2018.02.008

Table 2.

Ratio between the arithmetic mean and median of K2O, ln-Th and ln-U of FOREGS Topsoil and GEMAS (Ap + Gr) databases.

Arithmetic mean
GEMAS/FOREGS		 Median
GEMAS/FOREGS
K2O 0.94 0.96
ln-U 0.92 0.75
ln-Th 1.05 1.10