Variable Rotated Components (RC) Communalities
RC1 RC2 RC3 RC4  
Magnesium 0.905       0.958
Calcium 0.902       0.858
Sulfate 0.898       0.915
Strontium 0.889       0.920
Electrical conductivity 0.793       0.936
pH 0.625       0.450
Phosphate   0.904     0.866
Total nitrogen   0.875     0.788
Boron   0.871     0.775
Ammonium   0.831     0.736
Sodium 0.555 0.722     0.852
Chloride   0.661     0.688
Nitrite   0.546     0.321
Iron     0.827   0.870
Aluminum     0.782   0.847
Chromium     0.768   0.749
Inorganic carbon     -0.551   0.782
Nitrate     0.532   0.646
Copper       0.746 0.691
Cadmium       0.678 0.491
Vanadium     0.634 0.641 0.821
Zinc       0.587 0.664
Total organic carbon       -0.507 0.782
Barium         0.599
Potassium         0.606
Nickel         0.476
Lead         0.062
Manganese         0.805
Cobalt         0.743
Arsenic         0.492
Mercury         0.39
Initial Eigenvalues 9.313 4.299 3.264 2.16  
Cumulative% 30.042 43.91 54.439 61.406  
Rotation Sums of Squared Loadings 6.096 5.934 3.687 2.931  
Cumulative% 19.665 38.808 50.7 60.153  
Extraction Method: Principal Component Analysis
Rotation Method: Varimax with Kaiser Normalization
Table 3: Rotated loadings of 31 experimental variables on significant principal components for Gans Creek, DSLO and CALLO dataset.