Left: mean angular velocity within the stellar layers in the radiative zone as a function of the remaining central hydrogen mass fraction X_c (time increases from right to left) for the same models as in Fig. 7. Masses 1.2, 1.3, and 1.4 M_⊙ are represented by full, dashed, and dotted lines respectively. Right: stars observed by Benomar et al. (2015) as indexed in the original paper (8: M = 1.307 ± 0.027 M_⊙, 9: M = 1.206 ± 0.077 M_⊙, 10: M = 1.378 ± 0.028 M_⊙, and 11: 1.500 ± 0.050 M_⊙).