Top: net velocity shifts of the in-transit residual CCFs as a function of phase, alonside the best-fit models (i.e. constant v_conv) for rigid body (red) and differential (black) rotation. Middle and Bottom: residuals (local RV − model v_stel) for differential and rigid body stellar rotation, respectively (horizontal lines at 0 to guide the eye); note the point at phase =−0.15 with the large error is not displayed in order to better view the remaining points. The colour-coding of the data points indicates the stellar disc position (brightness-weighted ⟨μ⟩ behind the planet), while the colour of the error bar indicates the observation date. Inset: occulted stellar latitudes determined by the best-fit differential rotation model.