Long-Term Trend of Gaseous Ammonia Over the United States: Modeling and Comparison With Observations.

J Geophys Res Atmos · 2018 · PMC6473605 · PMID 31032164

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hedged sentences

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closest p · 0.2× alpha

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boldest claim

The sentences

highly significantp value < 0.01actually significant

The increasing trend is statistically highly significant for most sites in the East ( p value < 0.01) and significant for most sites in the middle ( p value < 0.05).

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an increasing trendno p-value reported

Over North America, analysis of available [NH 3 ] data generally indicates either no significant change or an increasing trend (Hu et al., 2014 ; Li et al., 2017 ; Schiferl et al., 2016 ; Yao & Zhang, 2016 ).

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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.