1. Institute of Space Science; National Central University; Jhongli City Taiwan
2. High Altitude Observatory; National Center for Atmospheric Research; Boulder Colorado USA
3. GPS Science and Application Research Center; Jhongli City Taiwan
4. National Space Organization; Hsinchu Taiwan
5. Department of Earth Science; National Cheng Kung University; Tainan Taiwan
6. Cooperative Institute for Research in Environmental Sciences; University of Colorado Boulder; Boulder Colorado USA
7. Space Weather Prediction Center; National Oceanic and Atmospheric Administration; Boulder Colorado USA