Fig. 6.
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Sulphur-to-silicon vs zinc-to-iron abundance ratios in proximate H2 and DLA systems. The green line and shaded area represent the best fit for intervening DLAs by De Cia et al. (2016) and the 1σ scatter around this relation. The dashed blue line is a linear fit to the proximate H2 data. Dashed vertical and horizontal lines mark solar values. Symbols and colours for data points are as in Fig. 5.
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