The Use of the Total Electron Content Measured by Navigation Satellites to Estimate Ionospheric Conditions

Figure 9

Deviations of calculated values from experimental foF2(obs) for different options of using TEC(obs). Black dots show curves for the initial model IRI. Blue dots indicate curves for a case of joint use of TEC(obs) and τ(IRI). Green triangles represent curves for a case of joint use of TEC(obs) and τ(med). Red diamond show curves for use of coefficient of the model .