| Log C(mol/L) | −4.2820 | −4.2426 | −4.2197 | −4.1574 |
| C(10−5 mol/L) | 5.2240 | 5.7200 | 6.0298 | 6.9599 |
| a(10−5 mol/L) | 3.2561 | 3.5653 | 3.7584 | 4.3381 |
| Log a (mol/L) | −4.4873 | −4.4479 | −4.4250 | −4.3627 |
| σ (mN/m) | 36.20 | 35.40 | 35.00 | 34.00 |