| Group | PC1 Mean | b | a | c |
| C | −1.89318 | **** | ||
| RA50 | −0.13118 | **** | ||
| SA25 | −0.04002 | **** | ||
| RA10 | 0.49691 | **** | **** | |
| SA5 | 0.64746 | **** | **** | |
| DM2 | 1.64162 | **** |
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