1. Jet Propulsion Laboratory; California Institute of Technology; Pasadena CA USA
2. Glendale Community College; Glendale CA USA
3. Indian Institute of Geomagnetism; Navi Mumbai India
4. Department of Physics; University of Iowa; Iowa City IA USA
5. Department of Atmospheric Sciences; University of California; Los Angeles CA USA
6. Czech Academy of Sciences; Prague Czech Republic
7. Charles University; Prague Czech Republic
8. LPC2E, CNRS; Orléans France