nGC3 PCMs for a random realisation of particles in the r_gal range 13–14 kpc, for each of the three warp models: Simple Symmetric warp (left), the Sine Lopsided warp (centre) and the S Lopsided warp (right). The colour scales linearly with star counts, indicating larger values with darker colours. Dotted circles and radial lines correspond respectively to parallels at co-latitudes increasing by 2° and meridians at azimuths every 30°.