Widths of $R_2^{\rm CD}(\Dphi)$ (blue markers) and $P_2^{\rm CD}(\Dphi)$ (red markers) correlation functions along $\Dphi$measured within $|\Deta| < 1.6$ for pp and within $|\Deta| < 1.8$ for p$-$Pb and Pb$-$Pb collisions as a function of $\langle {\rm d}N/{\rm d}\eta \rangle_{|\eta|< 0.5}$. Vertical bars and boxes represent statistical and systematic uncertainties, respectively.