Fig. 5From: Variations of f oF2 and GPS total electron content over the Antarctic sectorThe foF2 monthly median values for San Martin during a low solar activity year 2007 are plotted against local time for the different seasons together with the IRI predicted foF2 values (CCIR and URSI). The seasons are represented by (a) January for Summer, (b) April for Fall, (c) July for Winter and (d) October for Spring.Back to article page