The lower limit of $\langle \cos n(\Psi_2(\pt)-\Psi_2)\rangle$ (blue boxes), the upper limit of $\langle v_2(\pt)v_2\rangle/\sqrt{\langle v_2^2(\pt)\rangle\langle v_2^2\rangle}$ (red boxes), and the flow vector fluctuations $v_{2}\{2\}/v_2[2]$ (gray diamonds) as a function of $\pt$. The different panels display results in different centrality intervals. The red (blue) arrows denote the upper (lower) limits, and the statistical (systematic) uncertainties are represented by open (shaded) boxes.