Author: Guojun He; Yuhang Pan; Takanao Tanaka
Title: COVID-19, City Lockdown, and Air Pollution: Evidence from China Document date: 2020_4_1
ID: if7av1x8_77
Snippet: Summary Statistics: We report the summary statistics of air pollution and weather variables during this period in Appendix Table A2 . The average AQI is 74, with a standard deviation of 42. The PM2.5 concentration is 52 µg/m 3 , five times higher than the WHO standard (10 µg/m 3 for annual mean, and 25 µg/m 3 for a daily mean). Cities that were locked down were, on average, more polluted than the control cities before the lockdowns. This is li.....
Document: Summary Statistics: We report the summary statistics of air pollution and weather variables during this period in Appendix Table A2 . The average AQI is 74, with a standard deviation of 42. The PM2.5 concentration is 52 µg/m 3 , five times higher than the WHO standard (10 µg/m 3 for annual mean, and 25 µg/m 3 for a daily mean). Cities that were locked down were, on average, more polluted than the control cities before the lockdowns. This is likely because Wuhan and its neighboring cities are generally more polluted than cities that are far away. We also see a sharp decline in AQI after the lockdown.
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