| Typicality: | 0.384 |
| Saliency: | 0.313 |
| tonne → average → 0.42% copper | 3 |
| tonne → average → 1.8% copper | 3 |
| tonne → average → 1.3% copper | 3 |
| negative | neutral | positive |
| 0.021 | 0.906 | 0.073 |
| Raw frequency | 9 |
| Normalized frequency | 0.313 |
| Modifier score | 0.500 |
| Perplexity | 226.736 |