Notes. The left column gives the name of the hydrodynamic model. is the weighted mean velocity of the bulk mass of ⁵⁶Ni with the ⁵⁶Ni mass fraction as weight function; , the maximum velocity of the bulk mass of ⁵⁶Ni; , the weighted mean velocity of the fast moving ⁵⁶Ni tail with the ⁵⁶Ni mass fraction as weight function; M_mix, the mass coordinate out to which the bulk mass of ⁵⁶Ni is mixed; δM_H, the mass of hydrogen mixed into the He shell; and ⟨ X ⟩ is the average mass fraction of hydrogen in the mass shell defined by , where M_CC and are the mass coordinates given in Tables 2 and 1, respectively.