Fig. 10

Bubble charts showing the variants employed by individual speakers in a rounded and b unrounded environments. The old and new distinction in b was based on Ang 洪惟仁 (2012) (Fig. 1). Numbers of speakers were represented by the area of the bubbles and were indicated in the center of the circles. Chiang speakers were indicated by solid circles filled with forward slashes, Chôan speakers were indicated by dotted circles shaded gray, and Mix speakers were indicated by dashed circles with backslashes. For variant combinations employed by both Chiang and Mix, a criss-cross pattern was used