Dispersion of orbital separations Δ versus the dispersion of PRs between adjacent planets in each of the 46 systems in the mass catalogue. The majority of systems display greater dispersions of separations Δ than of PRs, and the upper right outlier is the TOI-561 system. The 12 systems (star symbols) in which all PRs < 2 have small PR dispersions but span a wide range of Δ dispersions. Both the inner and outer Solar System have typical dispersions, while the entire Solar System has greater values. The black squares represent the inner regions of three systems that contain a minimum of three inner small planets and at least one outer giant.