Left: variation of ε_g with Δν, with the same style as Fig. 11. The horizontal dark gray domain corresponds to the expected range predicted for RGB stars by Takata (2016a), whereas the dot-dashed line shows the value ε_g,as = 1/4 derived from the asymptotic expansion (Provost & Berthomieu 1986). Uncertainties on ε_g are indicated by vertical lines; uncertainties on Δν are smaller than the symbol size. Right: histograms of the distributions of ε_g on the RGB (blue curve) and in the red clump (red curve). The dot-dashed line and the gray domain have the same meaning as indicated above.