| by passing dry ambient air | 6 | manner |
| by applying electrical energy | 6 | manner |
| naturally | 5 | manner |
| ozone → be → formed | 103 |
| ozone → can → form | 4 |
| negative | neutral | positive |
| 0.181 | 0.734 | 0.085 |
| Raw frequency | 107 |
| Normalized frequency | 0.763 |
| Modifier score | 0.550 |
| Perplexity | 275.831 |