| Typicality: | 0.673 |
| Saliency: | 0.688 |
| for about 12 years | 26 | temporal |
| for approximately nine to 15 years | 14 | temporal |
| for a shorter time | 10 | temporal |
| methane → remain in → the atmosphere | 35 |
| methane → stay in → the atmosphere | 31 |
| methane → persist in → the atmosphere | 6 |
| methane → linger in → the atmosphere | 5 |
| negative | neutral | positive |
| 0.264 | 0.600 | 0.136 |
| Raw frequency | 77 |
| Normalized frequency | 0.688 |
| Modifier score | 0.900 |
| Perplexity | 27.375 |