Full set for HVC finding charts for all 270 sightlines in our survey (see Fig. 1 for a detailed description). LG galaxies close to the sightlines have been indicated with the red ID numbers (Table A.3, first row; Sect. 5.3) and red tic marks in the upper panels. Note that the continuum shown here (and in Fig. 1) represents the global continuum derived from the automated continuum fitting procedure (Sect. 2.2), but not the exact continuum that was used for the measurements.