Relationship between the torus angle with respect to the line of sight (ψ) and the fractional contribution of AGN MIR emission for ULIRGs from the ADF–S sample. Radii of circles correspond to the redshift for each galaxy (used as a scaling factor; larger circles correspond to higher redshifts). One outlier, the galaxy with torus angle equal to 89°, is the most distant galaxy in our sample with z_spec = 1.23 (a detailed discussion of this specific quasar can be found in Sect. 4.1.3).