Left: schematic of the simple precession model by Aalto et al. (2016) showing the precession angle θ. Right: lower velocity (60–80 km s⁻¹) jet emission (from Fig. 5). Contour levels are (for the blue- and redshifted emission respectively) 0.004 ×(1,5,10,20,50) Jy beam⁻¹ kms⁻¹. The thick black dashed line shows the orientation of the jet axis. The narrow wind is outlines in green and the suggested precession angle in a thin, dashed line