Air pollutants | Unit increment | Concentration on the day of the PCV | Concentration on the day before the PCV | 3-day mean concentration before the PCV | ||||||
---|---|---|---|---|---|---|---|---|---|---|
OR | 95 % CI | OR | 95 % CI | OR | 95 % CI | |||||
PM2.5 | 10 μg/m3 | 0.994 | 0.681 | 1.450 | 0.969 | 0.680 | 1.383 | 0.864 | 0.461 | 1.620 |
NO2 | 10 ppb | 2.865 | 0.829 | 9.902 | 1.912 | 0.677 | 5.398 | 2.271 | 0.626 | 8.242 |
Ozone | 10 ppb | 1.359 | 0.641 | 2.879 | 2.314* | 1.163 | 4.606 | 3.977* | 1.277 | 12.383 |
Atmospheric pressure | 1 hPa | 0.978 | 0.921 | 1.038 | 1.012 | 0.956 | 1.071 | 1.017 | 0.942 | 1.098 |
Temperature | 1 °C | 0.886 | 0.775 | 1.013 | 0.928 | 0.786 | 1.096 | 1.013 | 0.808 | 1.270 |
Relative humidity | 10 % | 0.902 | 0.508 | 1.601 | 1.252 | 0.787 | 1.992 | 1.054 | 0.460 | 2.411 |
Wind speed | 1 m/s | 1.017 | 0.610 | 1.695 | 0.931 | 0.577 | 1.502 | 0.805 | 0.357 | 1.812 |
Daylight | 1 h | 0.893 | 0.790 | 1.010 | 1.036 | 0.929 | 1.156 | 0.914 | 0.761 | 1.097 |