| during the survey | 7 | temporal |
| in the dark | 7 | location |
| at night | 2 | temporal |
| amphibian → be → active | 14 |
| amphibian → be → observed | 6 |
| negative | neutral | positive |
| 0.135 | 0.700 | 0.165 |
| Raw frequency | 20 |
| Normalized frequency | 0.630 |
| Modifier score | 0.420 |
| Perplexity | 38.449 |