Fig. 5.

Rms spectra of SV and the prediction differences. The observed 5-year mean SV from 2000 to 2005 (solid line with squares), and the 7-year mean SV from 2000 to 2007 (solid line with asteroids) are calculated from CHAOS-2s model. The rest are the forecast errors of IGRF-8 (dotted line with upward triangles), IGRF-9 (dotted line with stars), IGRF-10 (dotted line with downward triangles), MoSST_DAS CAF 5-year forecast (dashed line with diamonds) and MoSST_DAS CAF 7-year forecasts (dashed line with circles).