Raw light curves (left) and common-mode corrected light curves (right) for one simulated dataset in Simulation 3 (containing wavelength-correlated systematics). The injected transit signal is plotted as a black dotted line. The variation of the systematics in wavelength is not obvious by eye but can be noticed by comparing the regions highlighted in red boxes. Despite the systematics varying in wavelength, the common-mode correction appears to remove visual signs of systematics.