The $p_{\mathrm{T}}$-differential $v_{2}$ measured through 2-particle correlations (2PC) for identified particles in two multiplicity ranges in pp collisions at $\sqrt{s}$ = 13 TeV. From left to right, the panels show $25 \leq N_{\rm ch}50$ and $15 \leq N_{\rm ch}25$. The vertical error bars and the filled boxes represent statistical and systematic uncertainties, respectively.