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Text: To derive maximum neutrino events to be expected from the measured SEDs , we applied the techniques that we developed for our analysis of the AGN in the fields of the first two PeV IceCube events . We used 2FGL GeV γ - ray spectra 47 and extracted X - ray spectra taken during the same period by Swift 48 . For sources not observed by Swift , we used X - ray data or upper limits from the ROSAT all - sky survey 49 . For PKS B1424−418 , we calculated in addition Fermi / LAT γ - ray spectra for the various time ranges of interest according to the methods described above . We fit a single log parabola to the high - energy data . From the integrated 1 keV to 5 GeV SEDs , we can derive a maximum - possible neutrino flux for each source . From this we can derive the maximum - possible number of counts for three years of IceCube integration ( see Supplementary Data Table 1 ) using the appropriate effective area for northern / southern - hemisphere sources for electron neutrinos of the IceCube 998 - day analysis 3 . Formal uncertainties of neutrino counts can be derived from the uncertainties of the integrated electromagnetic energy output but are dominated by systematic uncertainties due to the simplicity of the model .<|eot_id|><|start_header_id|>assistant<|end_header_id|>

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