Table 3
Correlations of air pollutants across 22 municipalities
CO
NOx
O
3
PM
10
SO
2
*Correlation is significant at the 0.05 level.
CO
1.00
0.88*
− 0.37
0.27
0.40
NOx
1.00
− 0.39
0.34
0.50*
O
3
1.00
0.28
0.19
PM
10
1.00
0.58*
SO
2
1.00