Heliocentric distribution of the mean nucleon density derived from the 3D dust extinction models presented in Edenhofer et al. (2024) for the sky region |b| ≤ 5°. The superimposed curves indicate large-scale features in the Solar neighborhood, as reported in Zucker et al. (2023). For the Radcliffe Wave, we indicate the full extent of the structure with the dashed white line and the segments within |b| ≤ 5° in green. The white disks indicate the locations of MC complexes referenced in the text.