Total mass of formed planetesimals at the end of the simulation for runs based on the core collapse simulations R1 (top row) and R7 (bottom row). Panels on the left-hand side correspond to Fig. 17 for R2, showing the mass for fixed ε₀ = 0.01 and $\overline{a}$ = 1 μm while varying χ. The panels on the right-hand side correspond to Fig. 19 for the R2 case, showing the mass for fixed χ = 100 and no small grains ($\overline{a}$ = 1 μm) while varying ε₀.