Distribution of the hydrogen volume density (n_H) derived from the Leike et al. (2020) 3D dust reconstruction (left) and ¹²CO emission (right) for the minimum and maximum distance and radial velocity channels with significant correlation, identified by the red and blue crosses in Fig. 4. The maps shown in a blue colormap correspond to the farthest distance and the lowest velocity channels with V > 3ς_v, where ς_v is the standard deviation of V across the whole distance and velocity range. The maps shown in a red colormap correspond to the nearest distance and the highest velocity channels with V > 3ς_v. The yellow and green stars indicate the positions of the young (age < 10 Myr) stellar objects presented in Galli et al. (2019) and young stellar clusters in Luhman (2023), respectively.