PDS 70 ALMA observations with the projected distributions of the projected planetary orbits and Lagrangian points (L₄ and L₅) distributions. The background image (inverted grayscale) corresponds to the continuum observations from the combined ALMA data (see Sect. 2). The locations for the corresponding L₄/L₅ points for each orbit (total of 10³ for each planet) are plotted with dots, whose density is represented by the colors from the right-hand side bar (it is important to note that lighter colors denote a higher density of probability for the location). The origin of coordinates is shown with white lines. The synthesized beam (0.058″ × 0.052″, PA = 58.71°) is represented in the bottom right of each panel by a white ellipse. Diamond-shaped markers indicate the planets locations. Contours correspond to 3, 3.5, 4, and 8-σ. Left: global picture of PDS 70. Right: zoom of the inner cavity to inspect the L₅ region of PDS 70 b. In green the extended emission associated with planet b reported by Isella et al. 2019 is indicated.