Research Article
Coal Mine Air Pollution and Number of Children Hospitalizations because of Respiratory Tract Infection: A Time Series Analysis
Table 2
Pearson correlation coefficient between air pollutants and meteorological factors.
| | | Temperature | Relative humidity | SO2 | NO2 | PM10 | API |
| | Temperature | 1.000 | 0.098 | −0.121 | −0.151 | −0.252 | −0.185 | | Relative humidity | | 1.000 | −0.042 | −0.052 | −0.175 | −0.138 |
| | SO2 | | | 1.000 | 0.118 | 0.143 | 0.209 |
| | NO2 | | | | 1.000 | 0.311 | 0.219 |
| | PM10 | | | | | 1.000 | 0.917 |
| | API | | | | | | 1.000 |
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