| COEFFICIENT OF VARIATION | |||||||||
| Coefficient of Variation, % | |||||||||
| Round Robin | Number of | Rotational | DSR | DSR | DSR | Mass | BBR | BBR | DTT |
| No. | Participants | Viscosity | Original | RTFO | PAV | Loss | S-value | m-value | Strain |
| 2000-3 | 68 | 7.580 | 7.296 | 8.082 | 12.950 | 65.681 | 7.921 | 3.110 | 23.998 |
| 2000-4 | 67 | 20.640 | 11.044 | 9.664 | 17.387 | 20.842 | 8.092 | 3.447 | 24.320 |
| 2001-1 | 69 | 3.743 | 6.403 | 6.225 | 25.756 | 21.276 | 8.435 | 4.663 | 31.052 |
| 2001-2 | 61 | 41.297 | 8.092 | 8.752 | 12.701 | 58.094 | 6.463 | 2.974 | 27.502 |