Figure 10. Nitrogen dioxide (NO2) concentrations over India and Bangladesh [21]

From

COVID-19 Induced Lockdown Consequences on Air Quality and Economy - A Case Study of Bangladesh

Sajal Roy, Nasrin Chowdhury, Mohammad Mamun Morshed Bhuyan

Journal of Environment Pollution and Human Health. 2020, 8(2), 55-68 doi:10.12691/jephh-8-2-3