Table 3. Results for Mann-Whitney U test with the centroid size between the specimens (dorsal view of the skull) from Japanese islands, Korean peninsula and Kinmen Island, Taiwan, with Holm Bonferroni correction.

	Japanese islands	Korean peninsula	Kinmen Island, Taiwan
Japanese islands		0.381	0.293
Korean peninsula	0.381		0.024
Kinmen Island, Taiwan	0.293	0.024

Significance with P<0.05, P<0.025 for the second smallest P value, P<0.017 for the smallest P value. Numbers in bold and italic indicate significance.