SN_glob (upper panel) and SN_peak (lower panel, discussed in Appendix C.1) vs. target number, for planet masses at the detection limit of Theia Collaboration (2017), for ΔT_spot1 (black) and ΔT_spot2 (orange). The horizontal dotted line corresponds to a S/N of 6. Circles correspond to the median value for each star (open circles correspond to stars outside the B-V range of our simulations), while the errorbar symbols correspond to the 5th and 95th percentiles. Upward arrows mean that the S/N are lower limits (quiet stars), while downward arrows correspond to upper limits (active stars).