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Fig. 6.

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SED-derived DTG ratio, DTGSED = AV/NHI (top), and depletion-derived DTGmass (bottom) as a function of redshift. The symbol notation follows Fig. 3. For comparison we mark the DTG ratios of the MW, LMC, and SMC. The GRB sightlines through high-redshift galaxies typically probe lower DTG content than inferred from these local galaxies.

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