3D distribution of the 37 SigMA Sco-Cen clusters in heliocentric Galactic Cartesian coordinates. The Sun is at (0,0,0). Colors and labels are as in Fig. 10. See also the interactive 3D version online and Figs. E.1–E.5, which allow a better appreciation of individual cluster properties. By double-clicking on a cluster in the legend of the interactive version, the selected cluster can be isolated; by hovering over data points, the cluster membership and observed l, b, d position of a source becomes visible.