Median EW comparison between DIB λ8620 and DIB λ15273 for GIBS (red) and GES (blue) fields. Filled circles indicate the DIB λ15273 measured by Zasowski et al. (2015) and triangles by Elyajouri & Lallement (2019). The dashed red line is the fit between the GIBS∕GES sample and the Zasowski et al. (2015) sample, and the dashed orange line between GIBS∕GES and Elyajouri & Lallement (2019). The error bars represent the standard deviation in each field. The Pearson correlation coefficients (r_p) are also indicated.