Fig. 9

Same as Fig. 6 but for 11 June 2007 (DOY 162). Black stars are the location of MUR, black crosses represent the observation regions with an altitude of 100 km (E region) and 300 km (F region), where the transmission beam was pointed to the north (azimuth: \({0}^{\circ }\), zenith: \({52.07}^{\circ }\) and \({57.84}^{\circ }\) in E and F regions, respectively), black dots indicate denote the locations at E (100 km) and F shells (300 km) connected by a geomagnetic field line