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Comparison of Inter-annual BC, CO and O3 concentration for the period of April and May at Bhubaneswar
| Pollutant | CO (ppbv) | 8 h O3 (ppbv) | BC (μg m−3) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Years/period of observation | 2014 | 2020 | % change | 2014 | 2020 | % change | 2015 | 2020 | % change |
| April | 553.10 ± 187.68 | 474 ± 154.91 | (−) 14.3 | 42.7 ± 9.2 | 23.4 ± 5.47 | (−) 45.18 | 1.94 ± 0.57 | 0.95 ± 0.29 | (−) 51.03 |
| May | 407.40 ± 116.96 | 439.7 ± 196.94 | (+) 7.9 | 34.7 ± 10.49 | 22.2 ± 2.11 | (−) 36.15 | 1.91 ± 0.41 | 0.87 ± 0.31 | (−) 54.45 |
