r/R   c/R     beta
0.15  0.2459  30.190
0.20  0.2643  27.493
0.25  0.2811  25.277
0.30  0.2994  23.377
0.35  0.3190  21.761
0.40  0.3383  20.248
0.45  0.3554  19.033
0.50  0.3684  18.069
0.55  0.3783  17.326
0.60  0.3854  16.815
0.65  0.3895  16.472
0.70  0.3896  16.170
0.75  0.3871  15.799
0.80  0.3778  15.492
0.85  0.3563  15.496
0.90  0.3151  15.955
0.95  0.2326  15.875
1.00  0.0587  11.256