Distribution of GRB properties provided by Swift/BAT. The green colour represents the whole Swift/BAT population, in blue, the one observed by H.E.S.S. The black lines represent the individual measurements for all GRBs detected at VHE and by Swift/BAT, except for GRB 190829A, represented with an orange arrow. Top-left: Distribution of the T₉₀ parameters. Top-right: Photon index. Bottom-left: Overall fluence of the burst. Bottom-right: One-second peak photon flux.