Table 2. Descriptive statistics of particulate matter, gaseous pollutants and meteorological variables during a period with Saharan dust-affected days and Saharan dust-free days.
| Environmentalvariable | Mean | (SD) | Min. | p25 | Median | p 75 | Max |
| Period with Saharan dust-affected days (n = 52 days) | |||||||
| Particulate matter | |||||||
| PM10 (µg/m3) | 49.7 | (13.4) | 36.0 | 38.0 | 47.7 | 57.0 | 89.0 |
| PM 2. 5(µg/m3) | 14.4 | (10.5) | 1.0 | 9.0 | 13.0 | 17.0 | 70.0 |
| PM 2.5–10 (µg/m3) | 36.2 | (14.1) | 12.0 | 27.0 | 32.0 | 43.0 | 81.0 |
| Other pollutants | |||||||
| NO2 (µg/m3) | 5.3 | (1.6) | 0.0 | 1.2 | 6.0 | 8.0 | 23.0 |
| SO2 (µg/m3) | 3.7 | (1.4) | 2.0 | 3.0 | 3.0 | 4.0 | 9.0 |
| O3 (µg/m3) | 33.4 | (10.5) | 11.5 | 19.6 | 26.3 | 48.0 | 72.0 |
| Weather | |||||||
| Temperature (C°) | 28.9 | (0.9) | 26.9 | 28.0 | 29.0 | 30.0 | 31.0 |
| Relative humidity (%) | 76.8 | (4.5) | 69.0 | 73.0 | 76.8 | 79.0 | 92.0 |
| Period with Saharan dust-free days (n = 285 days) | |||||||
| Particulate matter | |||||||
| PM10 (µg/m3) | 19.2 | (5.6) | 8.0 | 16.0 | 18.0 | 21.5 | 34.0 |
| PM 2. 5(µg/m3) | 8.8 | (2.4) | 1.0 | 7.0 | 9.0 | 10.0 | 21.0 |
| PM 2.5–10 (µg/m3) | 10.3 | (5.3) | 0.0 | 7.0 | 10.0 | 13.0 | 29.0 |
| Other pollutants | |||||||
| NO2(µg/m3) | 7.6 | (4.5) | 0.0 | 5.0 | 7.0 | 10.0 | 25.0 |
| SO2(µg/m3) | 4.3 | (2.2) | 2.0 | 3.0 | 4.0 | 6.0 | 12.0 |
| O3 (µg/m3) | 38.5 | (10.2) | 12.5 | 23.2 | 37.1 | 53.0 | 91.0 |
| Weather | |||||||
| Temperature (C°) | 26.7 | (1.6) | 22.0 | 26.0 | 27.0 | 28.0 | 30.0 |
| Relative humidity (%) | 77.5 | (5.5) | 57.0 | 74.0 | 77.5 | 82.0 | 93.0 |
p25∶25th percentile.
p75∶75th percentile.
SD: standard deviation.