Top panels: LC of 211211A (left) and of 230307A (right) when using the 8–1000 keV range. Bottom panels, left to right: LC of 080807, 090720B, and 090832A, respectively (in the same energy range as top panels). The yellow window includes the initial short spike, while the blue one includes the extended emission. The inset in each panel shows a zoom-in on the narrowest pulse. The black point indicates the detection timescale, Δt_det, of the narrowest pulse, while the orange region shows the window encompassing FWHM_min.