Google on Sunday dedicated a doodle to honor Mexican chemist Dr. Mario Molina, a researcher who highlighted the impact of chemicals in depletion of Earth's protective layer- Ozone.
Daily eight-hour maximum average concentrations of ozone, fine particulate matter (PM2.5), inhalable particles (PM10), sulfur dioxide, nitrogen dioxide and carbon monoxide were obtained for each city from the China National Urban Air Quality Real-time Publishing Platform.