IAQI | SO2 24-hour average (μg/m3) | SO2 1 hour average (μg/m3) | NO2 24-hour average (μg/m3) | NO2 1 hour average (μg/m3) | CO 24-hour average (mg/m3) | CO 1 hour average (mg/m3) | O3 1 hour average (μg/m3) |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
50 | 50 | 150 | 40 | 50 | 2 | 5 | 160 |
100 | 150 | 500 | 80 | 100 | 4 | 10 | 200 |
150 | 475 | 650 | 180 | 150 | 14 | 35 | 300 |
200 | 800 | 800 | 280 | 200 | 24 | 60 | 400 |
300 | 1600 | - | 565 | 300 | 36 | 90 | 800 |
400 | 2100 | - | 750 | 3090 | 48 | 120 | 1000 |