d(cm) | PMPP (mW∙cm−2) | Sf (10m cm∙s−1) | η (%) |
3.5 | 20.834 | 4.5 | 24.5 |
3 | 20.851 | 4.5 | 24.5 |
2.5 | 20.878 | 4.4 | 24.5 |
2 | 20.919 | 4.4 | 24.6 |
1.5 | 20.987 | 4.4 | 24.7 |
1 | 21.114 | 4.4 | 24.8 |
0.5 | 21.477 | 4.3 | 25.2 |