Two-dimensional cross-correlation function of Fe⁺ for all eight transit time series combined. The cross-correlation function is shifted to the projected orbital velocity found for the second part of the transit, υ_orb,2 to illustrate the earlier change of orbital velocity. We purposely limited the colour bar in order to enhance the absorption feature that helps make the misfit visible. The dot indicates the centre of the transit. The blue shaded region shows the best-fit result.