Fig. 2From: Variations of f oF2 and GPS total electron content over the Antarctic sectorThe foF2 median values for Great Wall: (a) 1996 (Rz12 = 9), (b) 1997 (Rz12 = 23), and for San Martin: (c) 1996, (d) 1997. The seasons are represented by January (summer), April (fall), July (winter) and October (spring).Back to article page