  We investigate the high temperature decagonal quasicrystalline phase of
Al$_{72}$Ni$_{20}$Co$_8$ using a quasilattice gas Monte-Carlo simulation. To
avoid biasing towards a specific model we use an over-dense site list with a
large fraction of free sites, permitting the simulation to explore an extended
region of perpendicular space. Representing the atomic surface occupancy in a
basis of harmonic functions directly reveals the 5-fold symmetric component of
our data. Occupancy is examined in physical and perpendicular space.
