1. Laboratory for Atmospheric Research, Department of Civil & Environmental Engineering, Washington State University, Pullman, Washington 99164-2910, United States
2. Conestoga-Rovers & Associates, Niagara Falls, New York 14304, United States
3. URS Corporation, Austin, Texas 78729, United States
4. Aerodyne Research, Inc., Billerica, Massachusetts 01821-3976, United States
5. University of Cincinnati, Cincinnati, Ohio 45221, United States
6. National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8362, United States