Table 2. Correlation (R2) between individual symmetry axis APB and balance ratings.
| Symmetry axis | Main axis | In-out axis |
| Horizontal | 0.036 | 0.037 |
| Vertical | 0.024 | 0.007 |
| Diagonal | 0.050 | 0.003 |
| Antidiagonal | 0.037 | 0.005 |
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