Ratio of charged-particle jet cross section for resolution parameter $R = 0.2$ to other radii $R = X $, with $X$ ranging from $0.3$ to $0.7$, after UE subtraction. Data are compared with LO (PYTHIA) and NLO (POWHEG+PYTHIA8) predictions as shown in the bottom panels. The systematic uncertainties of the cross section ratios from data are indicated by solid boxes around data points in the upper panel and shaded bands around unity in the mid and lower panels. No uncertainties are shown for theoretical predictions for better visibility.