Comparison of results for the nGC3 method obtained for two different prior scale lengths, L = 2 kpc (crosses and filled circles) and L = 1.35 kpc (open squares and open diamonds) in red for the RGB sample and in blue for the OB sample. We show the inclination angles of the main nGC3 PCM peak (crosses in Fig. 13) as a function of r_gal. The plateau in the tilt angle observed for the RGBs (r_gal ≲ 9 kpc) is due to contamination from the central peak affecting the centroid when the two peaks are close.