Width vs. peak time for the sample of late-time flares (blue squares) compared with early-time flare sample (red stars). Green line: linear (w = 10. + 0.2   t_pk) behaviour found in the early flare sample. Pink line: best-fit for the late flares sample, . Grey area: region of the w − t_pk plane that cannot be explored in our analysis. Inset: distribution of the ratio w/t_pk of late-time flares (blue rectangles) compared with the early-time flare one (red rectangles). The two distributions are centred on a similar value (the median is 0.28 for the late-time flares and 0.23 for the early-time flares), but late-time flares have a higher standard deviation (σ = 0.33 compared with σ = 0.14).