. 2020 Nov 9;760:143391. doi: 10.1016/j.scitotenv.2020.143391

Table 1.

Pearson correlation between COVID-19 basic reproduction ratio and PM_2.5 composition.

	PM_2.5	BC	OM	SO₄²⁻	NO₃⁻	NH₄⁺	SNA
PCC with ${\bar{R}}_{0}$	0.47	−0.20	−0.42	0.37	0.29	0.37	0.44
p-Value	0.0006^⁎	0.1592	0.0029^⁎	0.0081^⁎	0.0396^⁎	0.0095^⁎	0.0016^⁎

COVID-19, Corona Virus Diseases 2019; PCC, Pearson correlation coefficient; PM_2.5, mass concentration of particular matter with aerodynamic diameter ≤ 2.5 μm; BC, black carbon fraction; OM, organic matter fraction; SO₄²⁻, sulfate fraction; NO₃⁻, nitrate fraction; NH₄⁺, ammonium fraction; MD, mineral dust fraction; SS, sea salt fraction.

^⁎

p-Value <0.05 is considered statistically significant.