Table 2.
Distribution of traffic pollutants’ concentrations (µg/m3) and noise exposure levels (LAeq, dB (A)) from 18:00 to 19:00
| Site | Mean | SD | Min | 25% | 50% | 75% | Max | |
|---|---|---|---|---|---|---|---|---|
| PM2.5* | L | 71.67 | 38.47 | 46.67 | 50.00 | 58.33 | 73.33 | 156.67 |
| H | 101.67 | 53.37 | 68.33 | 71.67 | 88.33 | 96.67 | 220.00 | |
| NO2** | L | 52.76 | 22.46 | 33.60 | 34.09 | 42.56 | 67.68 | 94.64 |
| H | 146.03 | 56.65 | 92.49 | 99.53 | 119.29 | 203.33 | 241.04 | |
| Noise*** | L | 44.4 | 2.0 | 42.5 | 42.8 | 44.0 | 46.9 | 47.4 |
| H | 70.1 | 1.0 | 68.9 | 69.1 | 70.0 | 71.0 | 71.7 |
Nonparametric Mann–Whitney test performed in PM2.5; Student’s t-test conducted in NO2 and noise. L: green space; H: crossroads. *P < 0.05, **P < 0.01, ***P < 0.001