Number density of MC packets for each species, in a vertical slice at the end of the high-resolution simulation. The dashed red lines are density contours at ﹩{10}^{\mathrm{9,11,13}}\,{\rm{g}}\,{\mathrm{cm}}^{-3}﹩. Figure 3 shows the same snapshot. Most packets are in the hot region close to the stellar surface. Few packets are needed far away from the remnant, or in cold regions of the neutron star.