Table 2 Correlation between air pollutants and meteorological factors in Ningbo, China
From: Association between ambient air pollutants and preterm birth in Ningbo, China: a time-series study
SO2 | NO2 | PM10 | PM2.5 | CO | O3 | Temperature | Relative humidity | |
|---|---|---|---|---|---|---|---|---|
SO2 | 1.00 | |||||||
NO2 | 0.59 | 1.00 | ||||||
PM10 | 0.69 | 0.74 | 1.00 | |||||
PM2.5 | 0.66 | 0.74 | 0.95 | 1.00 | ||||
CO | 0.22 | 0.45 | 0.43 | 0.47 | 1.00 | |||
O3 | −0.13 | −0.46 | −0.13 | −0.17 | − 0.29 | 1.00 | ||
Temperature | −0.39 | − 0.62 | − 0.52 | −0.50 | − 0.20 | 0.37 | 1.00 | |
Relative humidity | −0.39 | −0.04 | − 0.36 | −0.24 | 0.08 | −0.33 | 0.21 | 1.00 |