Fig. 6
Equivalent width of the 5780 (top panel), 5797 (middle panel), and 6614 Å (bottom panel) DIBs as a function of reddening E(B−V) for Galactic sightlines. The DIB strengths are taken from the literature (open symbols) and this work (filled symbols). The dashed line indicates the linear fit for the Galactic sightlines excluding the star-forming regions (RCW 36, Herschel 36, and M17), and the grey area represents the 1σ error on the fit.
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