Composition profiles for models b = 0.10 (top left), b = 0.15 (top right), and b = 0.19 (bottom left), as well as density profiles for the whole model set (bottom right), all at ∼1 d and used as initial conditions for the 1D radiative transfer calculations. We show a few of the dominant species in the ejecta. The Ni profile accounts for radioactive decay (essentially all Ni is due to ⁵⁶Ni). All elements are present at different radial velocities of the ejecta.