| Specific gravity (SG) | Number of rings | Ring angle | |
| Number of rings | 0.687 | ||
| (<0.0001) | |||
| Ring angle | −0.078 | −0.167 | |
| (0.555) | (0.202) | ||
| MC change | −0.617 | −0.590 | 0.086 |
| (<0.001) | (<0.001) | (0.512) |