Left: Line-of-sight velocity of the cooler (blue) and hotter (red) gas phases, for each of the two arm pointings and each of the various models and assumptions discussed in Sections 4.3.3–4.3.4. The 1σ statistical confidence interval of the l.o.s. velocity of the NW offset is shown as a light red band for comparison. This parameter is insensitive to the model variations, with a standard deviation of only 0.5 km/s between the different models presented. Right: corresponding velocity dispersions of the cooler and hotter gas.