Year on Year 90 day moving average comparison graph of PM10 emissions in Shanghai, China, with pithy arrows!

Year on Year 90 day moving average comparison graph of PM10 emissions in Shanghai, China, with pithy arrows!

Year on Year 90 day moving average comparison graph of PM10 emissions in Shanghai, China, with pithy arrows!

Year on Year 90 day moving average comparison graph of PM10 emissions in Shanghai, China, with pithy arrows!