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Fig. 7.

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T90,iEH diagram for type I GRBs (blue squares), type II GRBs (red circles), and SGR giant flares (unfilled magenta squares) with corresponding cluster analysis results. The 1σ and 2σ cluster regions are shown with bold solid and thin dashed curves of the corresponding colors. GRB 210312B is shown as an unfilled black circle.

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