Transit light curves over the broadband 2900–3100 Å that show the measurements obtained over each individual sub-exposure (black dots for transit #1, and blue dots for transit #2) as a function of the planet’s orbital phase. The first and last group of points, before and after the transit, around phase  − 0.34 and +0.25 respectively, correspond to the Out of transit orbits #2 and #5, while the two other groups around phase  − 0.15 and +0.05 correspond to the In transits observations that are completed respectively during orbit #3 (during ingress) and orbit #4 (deep within the transit). The solid red line shows the fitted profile, including limb-darkening and instrument breathing corrections.