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. 2021 Jan 7;21:66. doi: 10.1186/s12889-020-10065-0

Table 3.

Spearman correlation coefficients between air pollutants and meteorological factor during the 5-year study periods

PM2.5 PM10 SO2 NO2 CO Temp RH AP
PM2.5 1 0.922 0.664 0.642 0.849 −0.396 −0.132 0.284
PM10 1 0.66 0.686 0.795 −0.345 − 0.312 0.271
SO2 1 0.588 0.744 −0.508 −0.406 0.436
NO2 1 0.706 −0.461 − 0.493 0.469
CO 1 −0.49 − 0.237 0.419
Temp 1 0.414 −0.839
RH 1 −0.53
AP 1

All correlation coefficients were statistically significant

Temp: temperature; RH: relative humidity; AP: atmospheric pressure