Overview of all abundance measurements performed throughout the 29 exocomet sample, grouped by chemical species. For each species (e.g. S I), the measured ratios with Fe II were divided by the solar ratio of the corresponding elements (e.g. S/Fe), as given by Asplund et al. (2009). The ordering of the species reflect their ionisation energy. Each group of measurements is ordered according to the comet indexes (Table D.1).