Sample of synthetic light curves in UBVR_cI_c filters used during the localisation process of Segment II light variations. Most similar amplitudes in BVR_cI_c filters are obtained for disc inhomogeneities located between 13 and 20 R_⊙, but the slightly higher amplitude in the U filter may suggest somewhat closer localisation, from 12 to 15 R_⊙. The values used in a given model (ΔT, and ) are given at the top of each panel.