Schematic overview of the impact of the tested tweaked data reductions on the resulting transmission spectrum. Two metrics computed from the transit-depth differences relative to the standard reduction (∆δ) are reported: the weighted median μ_1/2 and the Spearman rank correlation coefficient ρ, both listed and color-coded following the accompanying color bar. Tweaks are grouped by pipeline stage and ordered by execution, with the chosen method given on the left; the standard reduction choice is highlighted in bold, and select tweaked transmission spectra with large differences in trend are color-coded to match Fig. B.4).