Table 2.
Correlation coefficients for daily mean values of meteorologic and air pollution variables.
| Particle fraction | Air temperature (°C) | Relative humidity (%) | Air pressure (hPa) | SO2 (μg/m3) | NO2 (μg/m3) | PM10 (μg/m3) |
|---|---|---|---|---|---|---|
| UFP (1/cm3) | −0.22 | −0.39 | 0.18 | −0.26 | 0.06 | 0.05 |
| PNCtotal (1/cm3) | −0.25 | −0.21 | 0.18 | −0.18 | 0.27 | 0.23 |
| PNC3–10 (1/cm3) | −0.22 | −0.51 | 0.19 | −0.19 | −0.16 | −0.09 |
| PNC10–30 (1/cm3) | −0.02 | −0.40 | 0.02 | −0.32 | −0.09 | 0.01 |
| PNC30–50 (1/cm3) | −0.17 | −0.15 | 0.16 | −0.23 | 0.22 | 0.12 |
| PNC50–100 (1/cm3) | −0.26 | 0.08 | 0.19 | −0.03 | 0.43 | 0.23 |
| PNC100–300 (1/cm3) | −0.13 | 0.36 | 0.05 | 0.15 | 0.55 | 0.44 |
| PNC300–1,000 (1/cm3) | −0.02 | 0.47 | −0.04 | 0.25 | 0.56 | 0.55 |
| PSCtotal (μm2/cm3) | −0.06 | 0.44 | −0.02 | 0.23 | 0.58 | 0.55 |
| PSC50–100 (μm2/cm3) | −0.26 | 0.12 | 0.18 | −0.01 | 0.45 | 0.24 |
| PSC100–300 (μm2/cm3) | −0.10 | 0.39 | 0.02 | 0.18 | 0.55 | 0.47 |
| PSC300–1,000 (μm2/cm3) | −0.01 | 0.48 | −0.05 | 0.25 | 0.56 | 0.56 |