A. M. Alexander1,2, S.
Marchi1, S. Chocron3, and J.
Walker3
1Southwest Research Institute, Boulder, CO 80302, USA.
2University of Colorado Boulder, Boulder, CO, 80309,
USA.
3Southwest Research Institute, San Antonio, TX 78238,
USA.
Corresponding author: Amanda M. Alexander (alexander@boulder.swri.edu)