| y1 | y2 | y3 | y4 | y5 | y6 |
y1 | 1 | 0.922 | 0.961 | 0.909 | 0.656 | 0.983 |
y2 | 0.922 | 1 | 0.909 | 0.975 | 0.765 | 0.848 |
y3 | 0.961 | 0.909 | 1 | 0.911 | 0.643 | 0.911 |
y4 | 0.909 | 0.975 | 0.911 | 1 | 0.807 | 0.822 |
y5 | 0.656 | 0.765 | 0.643 | 0.807 | 1 | 0.554 |
y6 | 0.983 | 0.848 | 0.911 | 0.822 | 0.554 | 1 |