Fig. 10From: The ionospheric condition and GPS positioning performance during the 2013 tropical cyclone Usagi event in the Hong Kong regionPositioning errors in the components of east, north, and up along with ionospheric scintillation index at the HKPC station on four typical days: 19 September 2013 (a) with no scintillations; 24 (b), 25 (c), and 29 (d) September 2013 with much more scintillations. The RMS of the positioning errors during different periods, as separated by the vertical dashed lines, is presented in the tablesBack to article page