Fig. 2From: A statistical analysis of medium-scale traveling ionospheric disturbances during 2014–2017 using the Hong Kong CORS networka The statistical distribution of minimum IPP moving distances between HKPC and KYC1 for the ionosphere height on July 7, 2017. b The statistical distribution of IPP moving distances received by HKQT from PRN14 on July 7, 2017Back to article page