Comparison of distance measurements for the Perseus, Taurus, Orion A, and Orion B molecular clouds. Each row corresponds to a different region in Galactic coordinates (ℓ, b). The grayscale background in all panels represents W_CO emission. The left panels show distances derived from Z21 extinction measurements, displayed as continuous color maps. The middle and right panels show pixelated distance measurements derived from EW₆₆₁₄ and E(BP–RP), respectively, with the color scale indicating distance. An interactive display of the specific pixel-based jumps, as shown in Fig. 8, is available at https://zenodo.org/records/15294371