Fig. 5.
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Column density calibrations for different species. The local calibration based on Milky Way gas clouds is shown in red, with error bar indicating the range due to variations in dust depletion. Our empirical calibration derived from J1439B is shown in blue. The two calibrations agree for Na and Fe, but differ for Mg, suggesting stronger Mg dust depletion in high-redshift outflows compared to the Milky Way.
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