Spatiotemporal characterization and regional
2020-4-1 · To investigate the characteristics of ground level ozone (O 3) for Henan Province, the ambient air quality monitoring data of 2015 and 2016 were analyzed.The result showed that the 8 h-max-O 3 concentrations displayed a distinct seasonality, where the maximum and minimum values, averaging 140.41, 54.19 μg/m 3, occurred in summer and winter, respectively.
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