| Component | ||
| A1 | A2 | A3 |
PCB 28 | 0.726 | 0.253 | −0.461 |
PCB 52 | −0.774 | −0.145 | −0.443 |
PCB 101 | −0.029 | 0.759 | 0.206 |
PCB 118 | −0.401 | −0.031 | 0.68 |
PCB 138 | 0.691 | 0.14 | 0.341 |
PCB 153 | 0.226 | −0.696 | 0.527 |
PCB 180 | −0.283 | 0.799 | 0.295 |