Top panel: comparison of the CARMENES and HARPS-N transmission spectra with the result presented in Sing et al. (2008). The CARMENES and HARPS-N results are presented using a binning width of 0.55 Å. Bottom panel: HD 209458b transmission light curves from Snellen et al. (2008), Albrecht et al. (2009), and this work (binned by 0.002 in orbital phase). The dashed line shows the transmission model as presented in those studies, while the solid line is the expected CLV and RM effects obtained with the same method.