Figure 5
From: Spatiotemporal distribution of ground-level ozone in China at a city level
The average O3 concentrations of the 338 cities of China during 2016, 2017 and 2018 (a) and during spring (b), summer (c), autumn (d), and winter (e). The maps were generated in ArcGIS10.2, URL: http://www.esrichina-bj.cn/softwareproduct/ArcGIS/.
