Table 4. The Japanese and Korean speakers’ pronunciation error ratio (%) of /s/ and /ts/ based on the Japanese speakers’ production boundary

Speaker	Error type
	/s/→/ts/	/ts/→/s/	All
Japanese	8.33 (384)	4.17 (384)	6.25 (768)
Korean	19.06 (640)	6.25 (640)	12.66 (1,280)

The population of the pronounced item is shown in parentheses.