Left: flux density (top) and distance from the core (bottom) of the core, S1, and S2 derived from Gaussian modeling of the jet components as shown in Fig. 7. Right: same as the left panels, but for the observations in Fig. 8. The vertical dashed lines correspond to the times of the 2016 and 2017 γ-ray outbursts. The average distances of S1 and S2 (i.e., 0.16 and 0.33 mas from the core) are indicated by the horizontal solid lines.