| RIVER | OGUN | LAGOS | ABUJA | KANO | NASARAWA | TARABA | JIGAWA |
CH4 | 1742 ± 4.98 | 6.97 ± 0.27 | 13.21 ± 0.5 | 0.04 ± 0.00 | 0.32 ± 0.02 | 1.68 ± 0.11 | 2.34 ± 0.12 | 0.32 ± 0.02 |
O3 | 56.89 ± 0.53 | 329.6 ± 1.6 | 329.5 ± 1.3 | 329.5 ± 1.3 | 328.5 ± 0.7 | 329.3 ± 1.34 | 329.1 ± 1.4 | 328.5 ± 0.7 |
NO2 | 108.3 ± 2.43 | 290.3 ± 5.1 | 296.7 ± 1.6 | 160.2 ± 2.3 | 138.3 ± 2.0 | 143.0 ± 1.09 | 280.5 ± 2.2 | 119.8 ± 1.3 |
CO2 | 385.6 ± 2.10 | 393.0 ± 14 | 393.0 ± 1.4 | 392.7 ± 1.3 | 393.5 ± 1.5 | 393.7 ± 1.34 | 393.2 ± 1.4 | 394.1 ± 1.6 |