Estimate of the lower bound on the Bjorken transverse energy density in pp, p\==Pb, and Pb\==Pb collisions at ${\FiveTeV}$, considering the exclusive ($\cap$, open markers) and inclusive ($\cup$, full markers) overlap area ${\ST}$ of the nucleons. The expression ${C\Npart{}^p}$ is fitted to case ${\cup}$, and we find ${C=\unit[(0.8\pm0.3)]{\GeVfmc}}$ and ${p=0.44\pm0.08}$ Also shown is a similar estimate from Pb\==Pb collisions at ${\TwoTeV}$ (stars with uncertainty band) .