Fig. 7: The lead-silicon ratio and Principal Component Analysis (PCA) comparison charts for tiles with different colored glazes. | npj Heritage Science

Fig. 7: The lead-silicon ratio and Principal Component Analysis (PCA) comparison charts for tiles with different colored glazes.

From: Technological integration and innovation in architectural ceramics in the Yuan Dynasty: chemical investigation for the glazed tiles of the Prince Anxi’ s mansion, China

Fig. 7: The lead-silicon ratio and Principal Component Analysis (PCA) comparison charts for tiles with different colored glazes.

a A box plot of the lead-silicon ratio for green glaze, showing the distribution of the lead-silicon ratio across different samples. b A box plot of the lead-silicon ratio for yellow glaze, displaying the variation in the lead-silicon ratio for yellow glazed samples. c A PCA comparison chart for white glaze, used to analyze the compositional differences among white glazed samples. d A PCA comparison chart for blue glaze, illustrating the compositional distribution of blue glazed samples.

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