1. Geosciences, Idaho State University, 921 South 8th Avenue, STOP 8072, Pocatello, Idaho 83209-8072, U.S.A.
2. Spatial Data Analysis and Visualization Lab, University of Hawai‘i at Hilo, 200 West Kawili Street, Hilo, Hawai‘i 96720, U.S.A.
3. College of Education, Idaho State University, 921 South 8th Avenue, STOP 8059, Pocatello, Idaho 83209-8072, U.S.A.
4. Pacific GPS Facility, University of Hawai‘i at Mānoa, 1680 East West Road, Honolulu, Hawai‘i 96822, U.S.A.