Figure 7From: Impacts of solar activity on performance of the IRI-2012 model predictions from low to mid latitudes Contour diagram with IRI-2001 as topside. The diagram shows latitudinal distribution of discrepancy in IRI model (IRI-2001 as topside) TEC (DTEC) as compared to ground-based GPS-TEC for all season during 2009 to 2013.Back to article page