Dust in the mid-plane (black and white image) and projections onto the plane of molecular clouds from the Zucker et al. (2020) catalogue (pink markers). The size of the marker decreases with the distance to the plane (maximum visible distance abs(Z) = 100 pc.) Only a few objects from the catalogue fall outside dense dust structures: W3, W4, W5 (l = 134–137°, d = 1 − 2 kpc), and IC1396 (l = 99°, d = 900 pc) (but see text).