Locations of dust batches in time for four standard cases. A) No growth, particles are always 1 mm and compact. B) Compact growth starting from 0.1 μm particles. C) Porous growth with perfect sticking. Successful planetesimal formation (Ωt_s> 10³) through coagulation is indicated by the (•)-symbol. The lifeline of the batch that formed planetesimals furthest out is colored red. D) Porous growth followed by erosion above velocities of 20 m s^-1. Dashed lines indicate the particles in the batch have 10^-2< Ωt_s< 3 and background colors indicate the midplane dust-to-gas ratio of particles that have Ωt_s ≤ 3.