| Order of Maximum | k−1 (Å) (center of gravity) | f(z) | R(Å) = f(z)・k−1 |
| 1 | 1.1051 | 4.5002 | 4.973 |
| 2 | 0.6631 | 7.7267 | 5.124 |
| 3 | 0.4544 | 10.9046 | 4.965 |
| 4 | 0.3528 | 14.0664 | 4.963 |