From: Estimation of the effects of heavy Asian dust on respiratory function by definition type
Type of day (number of days) | NO2 (ppb) | Ozone (ppb) | SO2 (ppb) | |||
---|---|---|---|---|---|---|
Heavy–AD days, as per the definition by the JMA (n = 5) | 3.5 | ± 1.3 | 57.6 | ± 10.9 | 2.0 | ± 1.0 |
Non–heavy AD days, as per the definition by the JMA (n = 87) | 2.8 | ± 1.2 | 50.1 | ± 8.4 | 1.0 | ± 0.7 |
Heavy–AD days defined by daily median level ≥ 0.07 km−1 (detected by LIDAR) (n = 5) | 3.7 | ± 1.3 | 52.2 | ± 10.4 | 1.3 | ± 0.9 |
Non–heavy AD days, defined by daily median level ≥ 0.07 km−1 (detected by LIDAR) (n = 87) | 2.7 | ± 1.1 | 50.4 | ± 8.6 | 1.0 | ± 0.8 |
Heavy–AD days, defined by hourly level ≥ 0.1 km−1 (detected by LIDAR) (n = 8) | 3.3 | ± 1.2 | 52.9 | ± 10.5 | 1.4 | ± 0.9 |
Non–heavy AD days, defined by hourly level ≥ 0.1 km−1 (detected by LIDAR) (n = 84) | 2.8 | ± 1.2 | 50.3 | ± 8.5 | 1.0 | ± 0.8 |
Heavy–AD days, defined by hourly level ≥ 0.07 km−1 (detected by LIDAR) (n = 20) | 3.0 | ± 1.0 | 54.3 | ± 9.2 | 1.4 | ± 0.8 |
Non–heavy AD days, defined by hourly level ≥ 0.07 km−1 (detected by LIDAR) (n = 72) | 2.7 | ± 1.2 | 49.5 | ± 8.3 | 0.9 | ± 0.8 |