The spectra of RRL emission from G0.17+0.15 are presented towards three positions, as shown by squares in blue, red, and green squares (see text). The bottom right panel shows the position velocity (PV) diagram along the linear feature to the west of G0.17+0.15. The area from which the PV is generated is shown by two parallel lines (see Fig. 2a) with roughly a 0.17 and 0.5 arcmin width and length, respectively, with PA = 180°. The positive offsets are at higher latitudes than negative offsets. The diagram covers the velocity range between 100 and 170 km s⁻¹.