| 0.4 ≤ x ≤ 1.0 | 0.4 | 0.45 | 0.5 | 0.55 | 0.6 | 0.65 | 0.7 | 0.75 | 0.8 | 0.85 | 0.9 | 0.95 | 1.0 |
| tR | 2.50 | 2.22 | 2.00 | 1.82 | 1.67 | 1.54 | 1.43 | 1.34 | 1.25 | 1.18 | 1.11 | 1.05 | 1.00 |
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