Distributions of inclination-corrected nova positions with respect to the minor axis (left) and the major axis (right) of M 31 for all known optical novae (lower panels, grey) and for novae with detected SSS counterpart (upper panels, white). Coordinate units are kpc, assuming a distance to M 31 of 780 kpc, and are not corrected for projection effects. Negative values correspond to positions in the south-east (far) part of M 31.