Data from the E2DS “e” files before (solid gray) and after correction of the telluric lines by APERO (“t” files, solid black), using for each transit an arbitrary observation in the Earth rest frame as an example. The dotted blue vertical lines indicate the position of the OH emission lines, while the gray areas indicate the range of theoretical positions spanned by the planetary helium triplet lines in the Earth rest frame during the transit. For the transits of HAT-P-11 b and GJ 436 b we used our custom correction (dotted red line) of the OH emission lines as residuals of these lines were still visible in the “t” files even after APERO correction.