Author: Zander S Venter; Kristin Aunan; Sourangsu Chowdhury; Jos Lelieveld
Title: COVID-19 lockdowns cause global air pollution declines with implications for public health risk Document date: 2020_4_14
ID: 33cgz7ob_39
Snippet: research-grade sources. See www.openaq.org for a list of sources. Despite the reliability of the 278 sources, we inspected pollutant time series for each country and removed spurious outliers in the 279 data with z-scores exceeding an absolute value of 3. Following quality control, we were left with 280 data representing 30 countries. 281 282.....
Document: research-grade sources. See www.openaq.org for a list of sources. Despite the reliability of the 278 sources, we inspected pollutant time series for each country and removed spurious outliers in the 279 data with z-scores exceeding an absolute value of 3. Following quality control, we were left with 280 data representing 30 countries. 281 282
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