Congratulations! It has come out well in your first attempt itself!!
There are various options you can try for better visual like if you can choose a Shape which may go with the pollution level or alternatively, choose different shapes for different types of pollution, the ones shown in the bar-chart. and give actual details in a chart which can be shown per selection.
Also, you can choose RED to GREEN for such scenarios where RED is the highest polluted state.
Likewise, there are many ways to display and getting informed in the quickest sense is everything here.
Thanks for your feedback!
On Fri, Dec 20, 2013 at 4:26 PM, Murali Govindu <