Histogram distributions of ω (top left panel), Ω (top right panel), L (bottom left panel), and i (bottom right panel) of test particle orbits at the end of the benchmark model simulation, i.e. at t = 4 Gyr. The strength of EFE was assumed to be Q₂ = 1. Orbits are discerned according to their semimajor axis and divided into three groups: 150 <a< 250 au (blue histograms), 250 <a< 550 au (green histograms), and 550 <a< 1500 au (red histograms). The observed distributions for ETNOs with 250 <a< 1500 au, multiplied by factor 4, are shown as well (dashed histograms). Histograms are aligned to the left.