Wen-Hao Yeh¹, Cheng-Yung Huang², Kun-Lin Chen¹, Tzupang Tseng³, H. H. Ho⁴, Jing-Mei Wu⁵, Jyun-Ying Huang⁶, Hsiu-Wen Li⁵ and Ching-Chieh Lin⁴, (1)National Space Organization, Hsinchu, Taiwan, (2)National Space Organization, Hsin-Chu, Taiwan, (3)Geoscience Australia, Symonston, Australia, (4)Central Weather Bureau, Taiwan Analysis Center for COSMIC, Taipei, Taiwan, (5)National Central University, GPS Science and Application Research Center, Taoyuan, Taiwan, (6)Central Weather Burean, Taiwan Analysis Center for COSMIC, Teipei, Taiwan