Fig. 6: Results from NAA data on ochre artifacts from eastern Eswatini.

Scatterplot of principal component 1 (PC1 25.7.0%) vs principal component 2 (PC2 17.8%) of the NAA data on ochre artifacts primarily from eastern Eswatini (G2a-G3). The plot shows the distribution of artifact datapoints organized into compositional groups, with ellipses are drawn at 90% confidence. Source data are available in Supplementary Data 3.