Present-day cumulative size of Sco-Cen, when ordering and adding the stellar cluster members by their decreasing age (without considering orbital trace-backs). The sizes can be seen as upper limits of the region’s size at a given age, but not as the true physical extent before the present-day, which was likely smaller (see Sect. 5.4). The shaded green area shows the 95% interquartile range (2σ; see Appendix B.2). The colours and grey bars are as in Fig. 1.