1. Don Wright & Associates, LLC, Georgetown, Texas 78628, United States
2. USDA-ARS, Conservation and Production Research Laboratory, Bushland, Texas 79012, United States
3. Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, Iowa 50011, United States
4. Volatile Analysis Corp. Inc., Grant, Alabama 35747, United States
5. The Epsilon Company, Round Rock, Texas 78664, United States
6. Department of Civil, Construction and Environmental Engineering, Iowa State University, Ames, Iowa 50011, United States