Analysing Seasonal Characteristics of Residual Ionospheric Errors in Bending Angles Based on Ensembles of Profiles from End- To-End Simulations. - Congliang Liu; Gottfried Kirchengast; Yueqiang Sun; Qifei Du; Weihua Bai; Xianya Wang; Xiangguang Meng; Junming Xia; Danyang Zhao; Yuerong Cai; Dongwei Wang; Chunjun Wu; et al. (IGARSS, 2018)