Distribution of jet structures in our LGRB population. In each panel, at each fixed angle θ, the yellow (resp. orange) filled area encloses 90% (resp. 50%) of the structures in the population, while the red line shows the median of the distribution at that angle. Top panel: energy structures (kinetic energy per unit solid angle as a function of the angle θ from the jet axis). Bottom panel: velocity structures (average Lorentz factor diminished by one, as a function of θ).