Revised values of Δν and ΔΠ₁ for the stars that were found below the degenerate sequence (z < −6 s) in Sect. 5.1, which are indicated by black circles. Other stars from V16 are shown as gray circles. The black dashed line corresponds to the average degenerate sequence computed in Sect. 5.1. Colored circles correspond to revisions of Δν and ΔΠ₁ obtained in this study. They are linked to the original measurements of V16 by straight lines. Colored star-shaped symbols correspond to stars from Yu et al. (2018) (see Sect. 5.3).