Instrumental effects on the jet energy measurement at $\sqrt{s}=$ 13 TeV in pp collisions as a function of the jet resolution parameter ($R=0.2$, $R=0.4$ and $R=0.6$). Upper panel: jet-by-jet distribution for various intervals in jet $p_{\rm T}$. Lower panels: JES as mean (left) and JER as standard deviation (right) of these distributions with ($f=1$) and without ($f=0$) the hadronic correction ($c_{\rm had}$), shown as points and lines, respectively. The gray bands indicate the $p_{\rm T}$ regions not taken into account for the final measurements.