on a limited basis | 2 | other |
foam → contain → pfos | 9 |
foam → contain → pfoa | 7 |
foam → contain → pfoa/pfos | 4 |
negative | neutral | positive |
0.343 | 0.597 | 0.060 |
Raw frequency | 20 |
Normalized frequency | 0.374 |
Modifier score | 0.500 |
Perplexity | 183.612 |