Injection–recovery detection power is dominated by element richness. Strong-evidence detection power, i.e., ﹩P(\mathrm{ln}{\rm{BF}}\gt \mathrm{ln}10| {\alpha }_{{\rm{true}}})﹩, is plotted against the injected Ca-normalized mixing fraction α_true. Curves show recovery for all records together and after stratifying by the number of detected elements ﹩{N}_{{\rm{\det }}}﹩. (a), Photospheric track (atm). (b), Diffusion-adjusted track (acc_ss).