GMEM solutions for each epoch, convolved with the averaged CLEAN beam: 1.5  ×  2.5 mas, PA  =  −4.5°. Gray ellipses are the Gaussian components superimposed on the image. The Gaussian model-fitting was performed in the image plane for the original GMEM solutions (Fig. A.1) convolved with the beam of 0.5  ×  0.5 mas (Fig. A.2). Axes are right ascension vs. declination in milliarcseconds, measured with regard to the core.