Scatter plot of the maximum significances for E_th > 32 EeV of the flux excess in the direction of the BS maximum at 8 EeV, ${\sigma }_{\max >32\mathrm{EeV}}^{\mathrm{target}}$ vs. the corresponding value of ${\sigma }_{\max -8\mathrm{EeV}}^{\mathrm{BS}}$ (see text). The different colours correspond to different underlying astrophysical scenarios, as indicated on the plot. The two values of σ_max obtained with the Auger data are indicated by the black dot.