Trajectory of C7 smoothed by the moving average procedure on a timescale of 1 yr (blue line). For clarity, the smoothed trajectory is represented for four time periods: 1999.37–2004.08, 2006.26–2013.42, 2013.42–2016.61, and 2016.61–2019.98. Average asymmetric positioning errors are shown by ellipses. The median scatter position over the whole time range from 1999.37 to 2019.98 is marked with a red plus sign. The dashed red line is the central axis of the jet connecting the median position of C7 and the radio core.