Histograms for the UHECR samples used in this work. Top: energy distribution of the full (PAO and TA) UHECR sample (after re-scaling), together with those of the two least-deflected samples. Energies range between 57 and 160 EeV. Bottom: histogram of the exposure weight (the inverse of the combined sky-exposures of the PAO and TA) for the arrival directions of the UHECRs used in this work. Since exposure weights vary by factor 6–10 over the different sub-samples we preferentially use the statistical results without weighting for the sky exposure time of the observatories.