Table 4.

Varimax rotated for all sediment samples of the Jequetepeque River basin (n = 13). Values below 0.3 are not shown.

Metals	Principal component				Communalities
	1	2	3	4
Zn	0.932				0.981
Mn	0.922	−0.342			0.976
Cr	−0.702		0.520		0.813
Ni	0.541	0.448	0.364	0.465	0.842
As		0.922			0.927
Fe		0.910		0.316	0.979
Cd	0.633	0.648	0.321		0.924
Sn			0.877		0.825
Hg			0.873		0.870
Pb	0.442	0.307	0.655	−0.508	0.976
Al				0.880	0.836
Sb	−0.336		−0.308	0.787	0.832
Cu	0.435	0.502		0.705	0.946
Eigenvalues	3.446	2.990	2.683	2.608
Cumulative %	26.504	49.506	70.148	90.208