Inferred Industrial and Agricultural Activities Impact on Groundwater Quality of Skhira Coastal Phreatic Aquifer in Southeast of Tunisia (Mediterranean Region)

Table 5

Summary of the PCA results including the loadings of the eigenvalues.

	F1	F2	F3	F4	F5	F6	F7
Eigenvalues	10.89	1.85	1.07	0.69	0.53	0.38	0.26
Variance explained (%)	68.07	11.54	6.71	4.29	3.32	2.39	1.62
Cumulative variance (%)	68.07	79.62	86.33	90.62	93.94	96.33	97.97