11B: a = 0.804, 10B: b = 0.196, σ = 4

| isotopomer | struktura | σi | fi |
|---|---|---|---|
| 11B5H9 | A | 4 | 0.336 |
| 10B11B4H9 | B | 4 | 0.082 |
| 10B11B4H9 | C | 1 | 0.328 |
| 10B211B3H9 | D | 1 | 0.080 |
| 10B211B3H9 | E | 1 | 0.080 |
| 10B211B3H9 | F | 1 | 0.040 |
| 10B311B2H9 | F | 2 | 0.010 |
| 10B311B2H9 | E | 1 | 0.019 |
| 10B311B2H9 | D | 1 | 0.019 |
| 10B411BH9 | C | 1 | 0.005 |
| 10B411BH9 | B | 4 | 0.001 |
| 10B5H9 | A | 4 | 0.0003 |