| Typicality: | 0.365 |
| Saliency: | 0.270 |
| back down to earth | 6 | transitive-object |
| more than | 2 | degree |
| to estimate the propagation delay | 2 | purpose |
| signal → bounce off → the ionosphere | 9 |
| signal → be reflected off → the ionosphere | 3 |
| signal → be reflected by → the ionosphere | 3 |
| negative | neutral | positive |
| 0.211 | 0.728 | 0.061 |
| Raw frequency | 15 |
| Normalized frequency | 0.270 |
| Modifier score | 0.500 |
| Perplexity | 41.044 |