| Typicality: | 0.447 |
| Saliency: | 0.461 |
| from their 475-kilometer orbit | 2 | location |
| spacecraft → last → five years | 9 |
| spacecraft → take → five years | 4 |
| spacecraft → operate for → at least five years | 4 |
| spacecraft → have → a five-year design life | 3 |
| negative | neutral | positive |
| 0.041 | 0.874 | 0.084 |
| Raw frequency | 20 |
| Normalized frequency | 0.461 |
| Modifier score | 0.500 |
| Perplexity | 245.781 |