1. Northeast States for Coordinated Air Use Management, Boston, MA, USA
2. Air Resources Division, New Hampshire Department of Environmental Services, Concord, NH, USA
3. Center for Environmental Measurement and Modeling, United States Environmental Protection Agency, Research Triangle Park, NC, USA
4. Bureau of Air Quality Analysis and Research, New York State Department of Environmental Conservation, Albany, NY, USA
5. Air Quality Division, District of Columbia Department of Energy and Environment, Washington, DC, USA