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Fig. 11

image

Blue solid histogram and error-bars in the top panel AV distribution for z< 2 GRB from the statistical analysis (Sect. 2.3.3 and Sect. 2.4). The black histogram represents all raw measurements without corrections. Lower panel: the cumulative distribution of AV and its uncertainty from z< 1 hosts (dark blue) and 1 <z< 2 hosts (olive). The red dashed line shows z> 2 hosts (error region not shown).

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