Binned velocity traces (each of three exposures) relative to the systemic velocity (top) and FWHM (bottom) for Ti I and V I. The uncertainties are estimated through JAX; see the explanation in Appendix C. Towards the end of the transit, the velocity shift and FWHM for Ti I are larger than those for V I. The velocity shift difference is significantly larger, while for the FWHM, the uncertainties are relatively large, particularly in Ti I.