Fig. 19
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Kernel density estimate (KDE) distributions of the channel-wise column density ratios. Black and gray bars indicate unweighted mean ratio values measured from previous studies of absorption lines (Lucas & Liszt 2000, 2002; Godard et al. 2010; Gerin et al. 2011; Neufeld et al. 2015). Median and mean values of the KDE distributions are marked by solid and dashed vertical lines (in lime, cyan, and fuchsia).
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