Line ratio maps of the Th 28 jet from the MUSE channel maps (−200 to +140 km s⁻¹), showing line ratios which trace n_e. Pixels with flux below 3 σ of the background in any of the constituent emission lines have been excluded. Source and knot positions are marked by black and red vertical dashed lines, respectively, with knot positions as defined in Murphy et al. (2021). Colour scaling is orientated to show the regions of highest n_e in yellow.