Examples of UD fit for observations taken within a single epoch. The fit demonstrates that the determined θ does not strongly depend on the uv orientation (shown as smaller plots), and the results are mostly within error bars from each other. Different colors correspond to θ_cont (green), θ_{Ti I,Sc I} (yellow), and θ_CO(2-0) (red). The shaded part of the graph corresponds to values below the adopted |V|² = 0.05 limit. Upper panel: R Car for four observations taken on 27 January 2018. See Table A.2. Upper panel: VX Sgr for three observations taken between 30 and 31 August 2021. See Table A.1.