Table 5. Fitted Equations.

		coefficients
groups	immersion time	a	b	fitted equations	R2
A	washed	114.87	0.185		0.948
	24	143.95	0.166		0.977
	48	186.63	0.162		0.981
	72	206.04	0.160		0.984
B	washed	88.80	0.231		0.903
	24	101.37	0.229		0.924
	48	118.96	0.228		0.956
	72	129.26	0.227		0.903