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What is Hebei's air quality ranking?

According to the order of air quality comprehensive index from small to large, it is:

Zhangjiakou, Chengde, Hengshui, Cangzhou, Langfang, Baoding, Qinhuangdao, Handan, Shijiazhuang, Xingtai and Tangshan.

According to the year-on-year decline of comprehensive air quality index, the order is as follows:

Zhangjiakou, Tangshan, Baoding, Shijiazhuang, Langfang, Chengde, Cangzhou, Handan, Hengshui, Xingtai and Qinhuangdao.

上篇: Why do you seldom see dragonflies on rainy days? 下篇: Anyone who has ancient prose about greed, had better make up a story for me. urgent