Correlation coefficients among daily concentrations of air pollutants and daily means of meteorological parameters
| PM2.5 | PM10 | OBC | NO2 | Ozone | Atmospheric pressure | Relative humidity | Temperature | Wind speed | Hours of daylight | |
|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 | 1 | 0.87 | 0.62 | 0.31 | 0.06 | −0.01 | 0.13 | 0.02 | −0.32 | −0.04 |
| PM10 | 1 | 0.44 | 0.24 | 0.13 | −0.05 | 0.03 | 0.11 | −0.20 | 0.02 | |
| OBC | 1 | 0.50 | −0.16 | 0.06 | 0.27 | −0.04 | −0.51 | −0.09 | ||
| NO2 | 1 | −0.23 | 0.26 | 0.01 | −0.30 | −0.34 | −0.00 | |||
| Ozone | 1 | −0.12 | −0.33 | 0.05 | 0.14 | 0.16 | ||||
| Atmospheric pressure | 1 | −0.38 | −0.55 | −0.27 | 0.25 | |||||
| Temperature | 1 | 0.28 | −0.24 | −0.61 | ||||||
| Relative humidity | 1 | 0.02 | 0.10 | |||||||
| Wind speed | 1 | 0.03 | ||||||||
| Hours of daylight | 1 |
NO2, nitrogen dioxide; OBC, optical black carbon; PM, particulate matter.