Aitoff projection of the Fermi sky region. The purple boxes represent the γ-ray DBSCAN sources (K = 8,ε = 0.21 deg). The green crosses are the 2FGL sources with TS > 16, the red crosses those with TS ≤ 16. There are no fake sources, and the γ-ray DBSCAN finds all the sources with TS > 16, except one, enclosed by the red circle, whose center is positioned at the edge of the field.