Examples of CCF values as a function of planetary orbital phase computed with data from the second observing night (18 June 2020) and model containing only H₂O (top panel) or CO (bottom panel) lines. The horizontal dashed lines represent the transit ingress and egress while the dash-dotted line represents the expected CCF peak trail due to the planetary motion as measured in the observer rest frame. The expected CCF peak trail in transit is not represented for clarity. As it can be seen, due to the faintness of the signal, the CCF peak trail is not visible by eye. This kind of plots serves as a visual check of any remaining telluric and stellar residuals, in this case showing no residuals and signifying that these are adequately corrected by the PCA.