Top left: EW₈₆₂ of the HQ sample for stars beyond the Galactic disk (|z|> 300 pc), averaged in each level-5 HEALPix. Grey pixels indicate no data, where there are fewer than two DIB λ862 measurements in the level-5 HEALPix. Top right: TGE A₀ at HEALPix level 5, again where grey signifies no data (i.e. where there are insufficient extinction tracers). Bottom left: EW₈₆₂ vs. TGE over the sky. Bottom right: density plot of EW₈₆₂ vs. TGE. The median EW₈₆₂ in regular TGE bins is shown as red points. The uncertainty bars are derived using the average absolute deviation around the median.