Same as Fig. 4, for the observed (diamonds) and asymptotic (triangles) offsets. Both parameters are fitted, with dotted lines in the red giant regime and dashed lines in the main-sequence regime; thicker lines indicate the domain of validity of the fits. The triple-dot-dashed line represents the Tassoul value ε_as = 1/4, and the dot-dashed line is the model of ε_obs (varying with log Δν_obs in the red giant regime, and constant for less-evolved stars).