Comparison of the self-normalised yield of electrons from heavy-flavour hadron decays measured in \pp collisions at \sqrts $= 13 \rm TeV$ with the self-normalised yields of J/$\psi$ in \pp collisions at \sqrts $= 13 \rm TeV$ (top left), charged particles in \pp collisions at \sqrts $= 13 \rm TeV$ (top right), D mesons in \pp collisions at \sqrts $= 7 \rm TeV$ (bottom left) and strange particles in \pp collisions at \sqrts $= 13 \rm TeV$ (bottom right), in comparable \pt bins.