| Comparison | N tran | N sig | % diff |
| PG1-PG2 | 27 | 10 | 37% |
| PG1-YG1 | 43 | 32 | 74% |
| PG1-YG2 | 31 | 22 | 71% |
| PG2-YG1 | 27 | 14 | 52% |
| PG2-YG2 | 27 | 10 | 37% |
| YG1-YG2 | 31 | 11 | 35% |