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Figure 8
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Mean (μ) and root-mean-square (σ) residuals (in nT) of the DIFI-8 and xDIFI-2 models as a function of the Kp index, for observatories used in building (circles) and validating (filled squares) each model. Residuals are shown for the radial (red), polar (green), and azimuthal (blue) magnetic field components.
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