Upper limits at 95% CL on the gamma-ray luminosity (top) and energy (bottom) as a function of the observed time window. The ULs have been obtained for the 0.1–1000 GeV energy range. In both plots, the orange line represents the median value of upper limits obtained from individual FRB events, while the orange band is obtained from the 10% and 90% quantiles of these values. Blue arrows represent the upper limits from the stacking analysis on all bursts.