“…Other studies to determine the changes in the air quality based on the COVID-19 lockdown restrictions in different countries have been performed by Kutralam-Muniasamy et al (2021) for Mexico city, Mor et al (2021) for Chandigarh, located in the Indo-Gangetic plain of India, , Chowdhuri et al (2022) for Kolkata Metropolitan Area (India), Das et al (2022) for Mumbai (India), Pal et al (2022) focused on Indian cities of Delhi, Mumbai, Kolkata, and Chennai, Sathe et al (2021) also analyzed some Indian cities (e.g., Mumbai, Bengaluru, and Kolkata), Wetchayont et al (2021) for Bangkok Metropolitan (Thailand), Jakob et al (2022) investigated the changes in the concentration of air pollutants of Jakarta (Indonesia), Upadhyay et al (2022) analyzed changes in levels of air quality in South Asia, Gao et al (2022) for Wuhan (China), Celik and Gul (2022) investigated the case study of Istanbul (Turkey), Anil and Alagha (2021) and Alharbi et al (2022) studied the Kingdom of Saudi Arabia, Sbai et al (2021) the city of Lyon and the center of the Auvergne-Rhône-Alpes region (France), Jeong et al (2022) conducted a similar study for Toronto (Canada), Gorrochategui et al (2022) analyzed the Barcelona metropolitan area and other parts of Catalonia, Skirienė et al (2021) examined the United Kingdom, Spain, France, and Sweden, as well as the Northern Italy region, etc.…”