Top: Centrality dependence of $\gc$ for pairs of particles with same and opposite charge for shape selected and unbiased events. Bottom: Centrality dependence of $\dc$ for pairs of particles with same and opposite charge for shape selected and unbiased events.The event selection is based on $q_2$ determined in the V0C with the lowest (highest) value corresponding to 0--10\% (90--100\%) $q_2$. Points are slightly shifted along the horizontal axis for better visibility in both panels. Error bars (shaded boxes) represent the statistical (systematic) uncertainties.