Abundances by mass of ¹H, ⁴He, ¹²C, ¹⁶O, ²⁰Ne, ²³Na, and ²⁴Mg as a function of the fractional mass, corresponding to ONe-core WD models with M_⋆1.29 M_⊙, T_eff ∼ 12 000 K and log(M_H/M_⋆) = − 6, −7, −8, −9, and −10 (from top to bottom). Models were computed by taking into account time-dependent element diffusion, along with latent heat release and chemical redistribution caused by phase separation during crystallisation. The solid part of the models is emphasized with a gray tone. The crystallised mass fraction (in percentage) is 99.5%.