Table 3.
Correlations between number concentration of particles in each size fraction, and BC, gaseous pollutants and meteorologic parameters
| BC | NO 2 | CO | SO 2 | O 3 | T | RH | Air pressure | |
|---|---|---|---|---|---|---|---|---|
| PNC 5−560 | 0.52 | 0.65* | 0.45 | 0.48 | -0.1 | -0.13 | -0.14 | 0.18 |
| PNC 5−10 | -0.06 | 0.16 | -0.05 | 0.09 | 0.08 | -0.2 | -0.15 | 0.34 |
| PNC 10−20 | 0.13 | 0.35 | 0.08 | 0.1 | 0.02 | -0.08 | -0.19 | 0.25 |
| PNC 20−50 | 0.35 | 0.54 | 0.36 | 0.38 | -0.14 | -0.04 | -0.14 | 0.21 |
| PNC 50−100 | 0.75* | 0.78* | 0.65* | 0.58 | -0.28 | -0.12 | -0.07 | 0.04 |
| PNC 100−200 | 0.72* | 0.7* | 0.56 | 0.6* | -0.07 | -0.2 | -0.09 | 0.15 |
| PNC 200−560 | 0.37 | 0.36 | 0.3 | 0.31 | -0.05 | -0.19 | 0 | 0.18 |
T for temperature and * indicates correlation coefficients >0.6.