Two-dimensional histograms comparing spatially coincident depths (a) SWIM23―BF08, (b) SWIM23―PQ19, (c) SWIM23―A. V. Pathare et al. (2018) MONS-derived depths, (d) PQ19―A. V. Pathare et al. (2018), and (e) PQ19―BF08. Data from all maps has been upsampled to 0.5°·0.5° spatial bins, the native resolution of PQ19, to facilitate pixel-to-pixel comparisons. In all panels, yellow indicates more pixels at a given depth pair, blue indicates fewer, and red is intermediate. Dashed white lines represent 1:1 and 1:2 correlations, respectively. Horizontal banding arises from discrete depth nodes in the SWIM23 matching catalog and an imposed maximum depth of 80 cm in PQ19.