How the cross-correlation detection strength, 𝒮, varies across time resolution and SYSREM iterations for individual realisations of the four hypothetical cases. Each row represents (i) the reference case, (ii) the case of the halved planetary signal, (iii) the case of the halved transit duration, and (iv) the case of the halved spectral resolution, following the same format and parameters as in Fig. 5. Note that some values are beyond the colour bar’s scale, which has been locked to facilitate comparison to Fig. 5.