Normalized growth rates η for ℓ = 1p and g modes in terms of the pulsation periods for the 0.1612 M_⊙ pre-WD template model at T_eff = 7400 K (upper panel) and the 0.1612 M_⊙ pre-WD template model at T_eff = 9500 K (lower panel). The large numerical range spanned by η is appropriately scaled for a better graphical representation. Some specific modes are labeled. The g and p modes with k = 5 are analyzed in Fig. 5. The vertical dashed lines enclose the period interval of mixed p − g modes. Unstable modes are emphasized with red dots.