Cross-correlation of iron template with the combined and night-specific transmission spectroscopy in the rest frame of the planet. The combined CCF of all nights is shown in black, with the nights shown separately in blue (night 1), orange (night 2), and green (night 3). The top panel shows the full velocity range over which the CCF was calculated. The bottom panel shows a zoomed-in view of −50,50 km s⁻¹. Absorption is positive with respect to the continuum.