Performance Evaluation of Volumetric Water Content and Relative Permittivity Models

Table 4

𝑅-square and root mean square error (RMSE) of the equations to data.

Equations	(1a)	(1b)	(1c)	(1d)	(2a)	(2b)	(3)	(4)	(5)	(6)
𝑅^2	0.749	0.8189	0.824	0.480	0.807	0.877	0.834	0.612	0.834	0.705
RMSE	6.131	0.078	5.133	8.824	0.071	0.058	0.075	0.114	0.075	6.536