Thanks for sharing such a great project. PM2.5 is a big issue not only in Hong Kong, but also in other countries in Asia, including Thailand. Having a tool for public and policy makers to monitor situation at real-time would make a significant impact on decision making to prevent and increase awareness of people.
You presentation is great, organization: clear logical sequence; Content: accurate and complete explanation of key concepts, define relevant application; Presentation: Use clear audible voice, well communicated, however, in my opinion, you can improve on visual aid- some slides might be too crowded with texts. – Great work!