Reconstruction performance for the track angles ϕ (left) and θ (right) for protons and for iron nuclei, shown as the differences (∆ϕ and ∆θ) between the reconstructed angles (θ_rec and ϕ_rec) and the true angles (θ_mc and ϕ_mc). The blue histograms show the performance using networks trained to reconstruct the tracks of stopping particles. The yellow histograms show the corresponding results for monoenergetic particles (120 MeV for protons and 500 MeV/n for iron), the red histograms for minimum-ionizing particles with an energy of 3 GeV/n. For each case, we quote the σ of the direction-independent ∆ϕ and ∆θ distributions.