Hammer-Aitoff projection of the sky in right ascension and declination including all HESE events above 100 TeV (red), and above 1 PeV (gray) in four years of data, with their respective R₅₀ error circles. The 3FGL position of the 3LAC sources consistent with the error circles are shown in gray crosses and the number of the IceCube event is marked above the plus sign, which marks the best-fit position of the origin of the neutrino event.