3-point correlation functions determined from the N_side = 64 Planck CMB Commander 2018 temperature and polarization maps. Results are shown for the pseudo-collapsed 3-point (upper panel) and equilateral 3-point (lower panel) functions. The red solid line corresponds to the data, while the black three dots-dashed line indicates the mean determined from the FFP10 Commander simulations, and the shaded dark and light grey regions indicate the corresponding 68% and 95% confidence areas, respectively. See Sect. 5.2 for the definition of the separation angle θ.