Fig. 8.From: Equatorial F2-layer variations: Comparison between F2 peak parameters at Ouagadougou with the IRI-2007 model(a) Local time and seasonal variations of percent deviations of measured foF2 from IRI predictions over Ouagadougou during low solar flux period of 1987. Solid circle: IRI URSI model. Open circle: IRI CCIR model. (b) Results similar to those of Fig. 8(a), but for the solar activity maximum year 1990.Back to article page