Comparison between the observed maps of the NE lobe of the radio jet (left panels) with the best-fit maps obtained with the model (right panels). The top panels correspond to the first ALMA epoch, bottom panels to the second one. The horizontal axis is parallel to the jet axis. Contour levels range from 10% to 90% in steps of 10% of the peak of each image. The circle in the bottom left represents the synthesised beam.