Funding for this research was provided by:
Directorate for Computer and Information Science and Engineering (CCF-1442966)
Received: 3 January 2018
Accepted: 30 January 2018
First Online: 19 February 2018
: The research presented was not performed or funded by EPA and was not subject to EPA’s quality system requirements. The views expressed in this article are those of the author(s) and do not necessarily represent the views or the policies of the U.S. Environmental Protection Agency.