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Mean (standard deviation) Svi value of each group before GB. The results of statistical analysis were shown by superscript letters. The groups with the same superscript letter had no statistical difference.
| Group before GB | Svi |
|---|---|
| ABS | 0.151 (0.007) AB |
| HIPS | 0.147 (0.003) AB |
| PETG | 0.155 (0.004) A |
| Reference | 0.138 (0.006) B |
