Examples of the fits to DIBs λ862.1 and λ864.8 in stacked ISM spectra in five voxels in the same direction, whose HEALPix number (I_pix = 10 450) and GC (ℓ_c, b_c) = (322.43°, −0.44°) are marked in the top panel. The black and red lines are the ISM spectra and fitted DIB profiles, respectively, normalized by the fitted linear continuum. The error bars indicate the flux uncertainties at each pixel. Orange indicates the region that was masked during the fittings. The central heliocentric distance (d_c), the number of target spectra (N_tar), mean E(BP − RP), EWs of two DIBs, and the S/N of the stacked ISM spectrum in each voxel are indicated as well.