| Temperature (˚C) | T (K) | A | B | 
| 20 | 293.15 | 5.22 | 3.00 | 
| 25 | 298.15 | 6.10 | 2.43 | 
| 30 | 303.15 | 6.00 | 2.61 | 
| 35 | 308.15 | 5.93 | 3.03 | 
| 40 | 313.15 | 6.08 | 3.41 |