| Comparison | N sess | N sig | % diff |
| PG1-PG2 | 28 | 9 | 32% |
| PG1-YG1 | 44 | 22 | 50% |
| PG1-YG2 | 32 | 24 | 75% |
| PG2-YG1 | 28 | 19 | 68% |
| PG2-YG2 | 28 | 19 | 68% |
| YG1-YG2 | 32 | 6 | 19% |