Table 3 Spearman’s correlation coefficients for outdoor PM10 and SO2 and indoor respirable dust in ten selected schools in the study located in Gauteng and North West provinces, South Africa between 1 and 31 October 2012
Pollutants | Spearman correlation coefficients | ||
|---|---|---|---|
Respirable dust | PM10 | SO2 | |
Respirable dust (μg/m3) | 1.00 |  |  |
PM10 (μg/m3) | 0.41 (<0.001)* | 1.00 |  |
SO2 (ppb) | 0.02 (0.675) | 0.29 (0.004)* | 1.00 |