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Earth, Planets and Space
Fig. 2 | Earth, Planets and Space

Fig. 2

From: New advantages of the combined GPS and GLONASS observations for high-latitude ionospheric irregularities monitoring: case study of June 2015 geomagnetic storm

Fig. 2

Data coverage over the northern (left) and southern (right) hemispheres within geographic latitudes of 30°–90°: a distribution of GNSS stations; examples of the data coverage accumulated during 1 h by b GPS signals only and c combined GPS and GLONASS signals, d percentage contribution of GLONASS data in each cell. Black triangle indicates the location of the geomagnetic pole

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