Mean energy flow as it is probed by the mean value of the $\Delta p_{T}$ distributions versus the jet radius of the smaller counterpart in each $R_{jet}$ pair for pp collisions at 13 TeV. The dependence of this measurement on the $p_{T}$ of the smaller jet in each case is also shown. The lines do not correspond to a fit but instead are used to facilitate the evolution of this observable. The rectangular boxes at each data point correspond to the systematic uncertainties.