Constraints on the values of the intrinsic jet speed β and the angle to the line of sight θ consistent with our measurements. Blue lines show the constraints on the θ-range for the measured jet-to-counterjet ratio. The black-dotted curve gives the corresponding values for the stacked image. The red lines give the constraints on intrinsic jet speeds based on the measured apparent speeds of the slowest and fastest component (see Table 2). The blue-shaded intersection area marks the region of permitted parameter space for both values. The gray-shaded region indicates the constraints according to measurements by Hardcastle et al. (2003).