Position offsets between GLOSTAR unresolved sources (Y factor ≤1.2) and VLBI extragalactic sources (upper panel), and CORNISH unresolved sources (lower panel). Red circles are centered in the mean values of the offsets, and the radii sizes are equal to the standard deviations. The circles in the bottom left corners of both panels represent the mean position error of GLOSTAR-VLA D-configuration radio sources reported in this work, which is $1_{\cdot }^{\mathrm{\prime }\mathrm{\prime }}6$.