Table 3.

Final outputs of the stepwise backward DFA.

Tracer	Wilks’ lambda	Partial Wilks’ lambda	F-remove	p-level	Tolerance
Ca	0.03	0.54	8.9	0.002	0.51
Mg	0.15	0.10	90.1	<0.001	0.45
Mn	0.05	0.29	26.2	<0.001	0.36
OC	0.03	0.52	9.7	0.001	0.70