Collisonal depolarization rates, D^k(j, T), for C₂ rotational levels in electronic states a³Πu. The upper panel illustrates the rates for k = 1 (open markers) and k = 2 (solid markers) with respect to j at T = 6000 K, where j = N−1 (circles), j = N (rectangles), and j = N +1 (triangles) are displayed. The lower panel shows the temperature variation in the rates for k = 1 (open markers) and k = 2 (solid markers) with the different j values of the N = 13 multiplet. Both panels display the fit values (dotted, dashed, and solid curves) we obtained using Equation (10) and GP coefficients of Tables A.3, A.4, and A.5.