SS, VGI status map - March 2012 to 2015.png
Detailed Description
Status graphic of the US showing volunteer citizen scientist contributions from March 2012 to March 2015, numbering more than 100,000 points.
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
