Table 1 Timeline of COVID-19 policy phases in South Korea and PM2.5 sampling periods.
Category | Period | Contents |
|---|---|---|
Pandemic | Aug 1, 2020–Apr 18, 2022 | - May 6, 2020: Start date of relaxed lockdown policy - Aug 1, 2020: Start date of PM2.5 sampling - Apr 18, 2022: End date of all lockdown policy in Korea |
Post-pandemic | Apr 19, 2022–Mar 31, 2024 | - Mar. 31, 2024: End date of PM2.5 sampling |
