Average transverse momentum as a function of event multiplicity in pp collisions at $\sqrt{s}=13$\,TeV. Results for the spherocity-integrated case (0\,--\,100\%), the most jet-like (0\,--\,10\%) and isotropic (90\,--\,100\%) events are compared with Monte Carlo predictions. Predictions of PYTHIA 8 with and without (null reconnection range, $\rm{rr}=0$) color reconnection, as well as PYTHIA 6 and EPOS LHC are displayed. Statistical uncertainties (error bars) are negligible compared to systematic uncertainties (shaded area around the data points). Data to model ratios are shown in the bottom panel. The color band around unity represents the systematic uncertainty.