Surface elevations of the original (panel (a)) and interpolated (panel (b)) ALSCC ROIs, along with their difference (panel (c)). Remainder of the x-coordinates of the original DEM relative to the densified resolution (panel (d)). In panel (c), the solid arrows point to the first row and the middle column where the difference is zero, while the dashed arrows point to the pixels with extremely small differences. In panel (d), the dashed arrows point to the pixels with extremely small remainders. Note the similarity in the spatial patterns between panels (c) and (d).