Position-velocity maps obtained from the X-shooter data as in Fig. 6, for line ratios tracing T_e and x_e. The PV maps for each line ratio are dereddened along the jet axis and binned along both axes by a factor of 2. We note the high-excitation region observed at <−100 km s⁻¹ in the blue-shifted lobe (lower left within each panel) which likely represents the base of the blue-shifted jet. Panel a. [N II]λ(6548+65 83)/5755 tracing electron temperature T_e; panel b. [S II]λ(6716+6731)/[O I]λ(6300+6363) tracing T_e and ionisation fraction x_e; panel c, [N II]λ(6548+6583)/[S II]λ(6716+6731) tracing x_e, n_e and T_e and panel d, [N II]λ(6548+6583)/[O I]λ(6300+6363) tracing x_e and T_e.