1. University of Minnesota, St. Paul
2. Cornell University, Riverhead, NY
3. U.S. Environmental Protection Agency, Corvallis, OR
4. USDA-ARS Air Quality Research Unit, North Carolina State University, Raleigh
5. Auburn University, Auburn, AL
6. Virginia Polytechnic Institute & State University, Blacksburg
7. Pennsylvania State University, University Park
8. Rutgers University, New Brunswick, NJ