河北沧州市臭氧质量浓度与气象因子的关系分析
熊险平, 沈瑞珊, 索春男, 李二杰, 张唯

Analysis of relationship between ozone mass concentration and meteorological factors in Cangzhou of Hebei Province
XIONG Xianping, SHEN Ruishan, SUO Chunnan, LI Erjie, ZHANG Wei
图3 2014—2020年河北沧州PM2.5、O3作为首要污染物的污染日数年际变化
Fig.3 The inter-annual variation of pollution days of PM2.5 and O3 as primary pollutant in Cangzhou of Hebei Province from 2014 to 2020