Coordinate time series of 2201+315 (here restricted to 1997–2005) obtained after the analysis of geodetic VLBI data. The position is given as offsets on the local plane of the sky from the average position of the source on the whole observation period of geodetic VLBI (1979–2018). Dots and gray bars show the estimated positions and their uncertainties for each of these sessions. The weighted rms are 0.24 mas in α cos δ and 0.34 mas in δ.