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Table 4 Factor loading for heavy metal after varimax rotation using PCA

From: Heavy metals accumulation in suburban roadside plants of a tropical area (Jengka, Malaysia)

Metal Factor 1 Factor 2
Fe − 0.18 0.95
Cu 0.51 0.81
Cd 0.96 0.12
Pb 0.97 − 0.05
Eigenvalues 2.31 1.46
Variability (%) 57.86 36.53
Cumulative (%) 57.86 94.39
  1. Factors in italics indicated a strong factor loading