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Consider a heatmap where each row and column represent a feature, and the elements of the heatmap represent the Pearson correlation between two features:
| Feature 1 | Feature 2 | Feature 3 | Feature 4 | |
| Feature 1 | 1 | 0,75 | -0,3 | 0,1 |
| Feature 2 | 0,8 | 1 | 0,6 | -0,2 |
| Feature 3 | -0,2 | 0,5 | 1 | 0,8 |
| Feature 4 | 0 | -0,1 | 0,95 | 1 |
Does the provided heatmap contain any error?