Table S1.
Percentage of total variation accounted for by each principal component
| Principal component | Variance (SSR), % | Variance (EAG), % |
| 1 | 49.824 | 81.965 |
| 2 | 9.071 | 5.3733 |
| 3 | 7.8264 | 4.4292 |
| 4 | 6.5168 | 2.4759 |
| 5 | 4.9327 | 1.5678 |
| 6 | 3.9549 | 1.1542 |
| 7 | 3.3621 | 0.73217 |
| 8 | 3.075 | 0.38766 |
| 9 | 2.3536 | 0.35369 |
| 10 | 1.6465 | 0.3157 |
| 11 | 1.4048 | 0.26067 |
| 12 | 1.1818 | 0.18701 |
| 13 | 1.0174 | 0.1676 |
| 14 | 0.74656 | 0.13216 |
| 15 | 0.65659 | 0.095231 |
| 16 | 0.51317 | 0.087467 |
| 17 | 0.42462 | 0.07727 |
| 18 | 0.36747 | 0.07125 |
| 19 | 0.27962 | 0.051365 |
| 20 | 0.18266 | 0.031849 |
| 21 | 0.14629 | 0.025577 |
| 22 | 0.10462 | 0.019361 |
| 23 | 0.070552 | 0.016137 |
| 24 | 0.066399 | 0.011878 |
| 25 | 0.009485 | 0.006756 |
| 26 | 0.003646 | 0.004244 |