n | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
RI | 0.000 | 0.000 | 0.580 | 0.900 | 1.120 | 1.240 | 1.320 | 1.410 | 1.450 | 1.490 |