Control Models and Spatiotemporal Characteristics of Air Pollution in the Rapidly Developing Urban Agglomerations.

Int J Environ Res Public Health · 2021 · PMC8201052 · PMID 34200515

Europe PMC DOI

hedged sentence

—

closest p

—

boldest claim

The sentences

showed a trendno p-value reported

The concentrations of NO 2 and CO showed a trend of first rising and then decreasing, it is still necessary to further strengthen pollution prevention and control; the concentration of O 3 kept increasing year by year on the whole.

also in 53,322 other papers

Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.