| in the evening | 9 | temporal |
| naturally | 2 | manner |
| in our bodies | 2 | location |
| melatonin → be → high | 10 |
| melatonin → be → highest | 6 |
| melatonin → be at → highest | 3 |
| melatonin → reach → peak levels | 3 |
| negative | neutral | positive |
| 0.220 | 0.620 | 0.160 |
| Raw frequency | 22 |
| Normalized frequency | 0.347 |
| Modifier score | 0.500 |
| Perplexity | 85.487 |