Figure 3

Comparison between KGRS and available Fermi Gamma-ray Burst Monitor (GBM) Detector 7 count rates versus time since initial trigger at 13:16:59.99 UTC¹². The Fermi data have been re-binned using the same energy and time bins as KGRS. Grey shaded areas indicate the Fermi “Bad Time Interval” where counts are unreliable due to pulse pile up. Based on the known direction of the GRB source, the light-time difference between Fermi and KPLO is estimated to be 1.955 s. Errors due to Poisson counting statistics during the KGRS 10-s measurement intervals are on the order of less than 1% and have no appreciable effect on the interpretation.