PCA scores for the Z matrix calculated using the SKL divergence and Mahalanobis distance, along with curves of constant ||TL,i|| Note that, although the PCA is calculated using mean centering, the ||TL,i|| values are calculated based on distance from Zi = 0, as discussed in Sections 1.5 and 3.4. Outlier data sets are colored blue and labelled with the data set identifier. Inlier data sets are colored red and not annotated.