Table 2 Spearman correlation between air pollutants and weather variables in Nanjing.
From: Short-term effects of ambient air pollution and childhood lower respiratory diseases
Variables | PM10 | PM2.5 | NO2 | SO2 | CO | O3 | Mean temperature (°C) | Relative humidity (%) |
|---|---|---|---|---|---|---|---|---|
PM10 | — | 0.87** | 0.67** | 0.75** | 0.61** | 0.24** | −0.07 | −0.49** |
PM2.5 | 0.87** | — | 0.53** | 0.56** | 0.68** | 0.22** | 0.03 | −0.21** |
NO2 | 0.67** | 0.53** | — | 0.75** | 0.53** | 0.05 | −0.22** | −0.46** |
SO2 | 0.75** | 0.56** | 0.75** | — | 0.47** | 0.14** | 0.28** | 0.71** |
CO | 0.61** | 0.68** | 0.53** | 0.47** | — | −0.17** | −0.22** | −0.13** |
O3 | 0.24** | 0.22** | 0.05 | 0.14** | −0.17** | — | 0.58** | −0.26** |
Mean temperature (°C) | −0.07 | 0.03 | −0.22** | −0.28** | −0.22** | 0.58** | — | 0.24** |
Relative humidity (%) | −0.50** | −0.21** | −0.46** | −0.71** | −0.13** | −0.26** | 0.24** | — |
