| in trace amounts | 7 | other |
| if at all | 4 | degree |
| especially | 2 | degree |
| methane → be → abundant | 14 |
| methane → be found in → abundance | 3 |
| negative | neutral | positive |
| 0.186 | 0.488 | 0.325 |
| Raw frequency | 17 |
| Normalized frequency | 0.368 |
| Modifier score | 0.500 |
| Perplexity | 93.295 |