Image Details
Caption: Fig. 2.
Hillas "alpha" distributions of events with 175 GeV < E < 225 GeV for three different time intervals starting at T = T0 + 40 s: 30 minutes (top), 5 minutes (middle), and 90 s (bottom). Circles refer to ON data, the solid line to OFF data. The dashed vertical line bounds the region where we would expect the γ‐ray signal.
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