Notes. M_tot is the total mass of the star, R_tot the total radius, L the luminosity at the surface and T_eff the surface effective temperature. The shell masses correspond to the outer mass coordinate where the element in question is most abundant; NA is used if at no point in the star is that species the most abundant. f_Si, O is as defined in Eq. (22). The thermodynamic variables ρ, s, Y_e, and T evaluated at the innermost point of the star are annotated with subscript “c”. Quantities with subscript “core” correspond to mass averaged quantities over the iron core, e.g. $Y_{\mathrm{e},\mathrm{core}}=\frac{1}{M_{\mathrm{Fe},\mathrm{core}}}{\displaystyle {\int }_0^{M_{\mathrm{Fe},\mathrm{core}}}}{Y}_{\mathrm{e}}(m)\mathrm{d}m$. M_Ch is the Chandrasekhar mass as defined in Eq. (19). The explodability parameters ξ_M, M₄ and μ₄ are defined in Eqs. (24), (25) and (26), respectively. M_4, g is the gravitational mass of a hypothetical neutron star resulting from the collapse of the core (Eq. (29)).