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Effectiveness of mapping methods. a) Trustworthiness 
continuity; (b) minimum spanning tree extension factor; (c) correlation with original distances (adjusted 
); and (d) correlation with stratigraphic congruence (MIG, adjusted 
). Lines depict median and interquartile range. Kruskal-1 mappings (omitted for clarity) behave equivalently to PCoA. t-SNE mapping results only available for first three dimensions.
