| COVID-19 | Coronavirus disease 2019 |
| SARS-CoV-2 | Severe acute respiratory syndrome coronavirus 2 |
| PM10 | Particulate matter of size ≤10 μm |
| PM2.5 | Particulate matter of size ≤2.5 μm |
| PM1 | Particulate matter of size ≤1 μm |
| CHMI | Czech Hydrometeorological Institute |
| ANOVA | Analysis of Variance |
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