| X13 | X14 | X15 | X16 | X17 | X18 | X19 | |
| X13 | 1.0000 | 0.7017 | 0.6328 | 0.5129 | 0.5950 | 0.6181 | 0.5235 |
| X14 | 0.7017 | 1.0000 | 0.7411 | 0.6063 | 0.6341 | 0.7793 | 0.6265 |
| X15 | 0.6328 | 0.7411 | 1.0000 | 0.7371 | 0.5082 | 0.6302 | 0.6460 |
| X16 | 0.5129 | 0.6063 | 0.7371 | 1.0000 | 0.6264 | 0.6307 | 0.7109 |
| X17 | 0.5950 | 0.6341 | 0.5082 | 0.6264 | 1.0000 | 0.8365 | 0.7319 |
| X18 | 0.6181 | 0.7793 | 0.6302 | 0.6307 | 0.8365 | 1.0000 | 0.7436 |
| X19 | 0.5235 | 0.6265 | 0.6460 | 0.7109 | 0.7319 | 0.7436 | 1.0000 |