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Table 2 First two PCs of the training dataset: eigenvalues, explained and cumulative variance, and loadings of the variables

From: Non-destructive characterisation and classification of ceramic artefacts using pEDXRF and statistical pattern recognition

PC Initial eigenvalues Factor loadings
  Total % of Variance Cumulative % Si K Ca Ti Mn Fe Zn Rb Sr Zr
1 4.987 49.875 49.875 .884 .901 .337 .917 .055 .918 .232 .766 .703 .678
2 1.412 14.120 63.995 -.139 -.045 .789 -.106 .859 .019 .023 -.129 .022 .013