Soil layer (cm)													RMSE
Soil layer (cm)	a	b	R	RMSE	A	B	R	RMSE	α	β	γ	R	RMSE
0 - 20	1.4058	0.0482	0.9021	0.5988	2.3954	0.0377	0.8155	2.0413	−1.1047	0.0041	0.0096	0.9091	0.5781
20 - 40	4.0902	0.0324	0.8761	0.822	6.7537	0.0486	0.8358	1.2254	−6.7860	0.0047	0.0126	0.9228	0.5211
40 - 60	3.206	0.0445	0.8541	1.021	2.334	0.0355	0.8622	0.9015	1.4620	0.0012	0.0360	0.896	0.6107
60 - 80	2.3134	0.0342	0.8279	1.7429	4.4915	0.03715	0.8992	0.6014	−1.1620	0.0135	0.0432	0.9085	0.5622