| x1 | x2 |
| x3 | x4 | y1 | y2 | y3 | y4 |
x1 | 1 | 0.247** |
| 0.505** | 0.506** | 0.523** | 0.374** | 0.573** | 0.329** |
x2 | 0.247** | 1 |
| 0.472** | 0.541** | 0.423** | 0.435** | 0.351** | 0.434** |
x3 | 0.505** | 0.472** |
| 1 | 0.504** | 0.449** | 0.455** | 0.506** | 0.349** |
x4 | 0.506** | 0.541** |
| 0.504** | 1 | 0.538** | 0.402** | 0.488** | 0.423** |
y1 | 0.523** | 0.423** |
| 0.449** | 0.538** | 1 | 0.422** | 0.468** | 0.427** |
y2 | 0.374** | 0.435** |
| 0.455** | 0.402** | 0.422** | 1 | 0.482** | 0.536** |
y3 | 0.573** | 0.351** |
| 0.506** | 0.488** | 0.468** | 0.482** | 1 | 0.500** |
y4 | 0.329** | 0.434** |
| 0.349** | 0.423** | 0.427** | 0.536** | 0.500** | 1 |