Differences between radio source coordinate estimates (α^* = α · cos δ, δ) from three solutions (red, green, and blue dots), applying the NNR condition on three different subgroups of 101 ICRF3 defining sources each and a solution aligned with all 303 ICRF3 defining sources. The black dots are the differences between the VIE2022b-sx solution (301 ICRF3 defining sources) and the solution with all 303 ICRF3 defining sources.