Fig. 10: Chemical variability among the 90 Shijiahe sherds (by period).
a PCA2 vs PCA3. b PCA1 vs PCA4. Drawn with a 90% confidence ellipse.
Fig. 10: Chemical variability among the 90 Shijiahe sherds (by period). | npj Heritage Science
a PCA2 vs PCA3. b PCA1 vs PCA4. Drawn with a 90% confidence ellipse.
