| Number of clusters (K) | F (U) | Dc (U) |
| 2 | 0.3333 | 0.9998 |
| 3 | 0.2500 | 1.0122 |
| 4 | 0.2000 | 1.0131 |
| 5 | 0.1667 | 1.0134 |
| 6 | 0.1429 | 1.0136 |
| 7 | 0.1250 | 1.0137 |
| 8 | 0.3333 | 0.9998 |