Panel A: coupling factor q vs. Δ Π for all objects. Real stars are indicated with black dots and models with red diamonds. Panel B: histogram of q for RGB stars (real stars + models) and CHeB stars in green solid and blue dotted lines, respectively. Panel C: as in panel A, now for ((ϵ_g + 1∕2) mod 1) vs. Δ Π . Panel D: distribution of (ϵ_g + 1∕2) mod 1. Panel E: the distribution of Δ Π results. The colour-coding and line styles in panels D and E are the same as in panel B. In panels A and C, uncertainties are over plotted. These are, however, in a number of cases smaller than the symbol size.