Topical Issue - Space Weather Instrumentation
Open Access
Technical Article

Fig. 6

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The figure illustrates the application of the WGM method to the LoS component of the 3D magnetic field skeleton of (a) AR 11166 (left) and (b) AR 12192 (right), respectively, to determine optimum forecasting height. The moments of starting and closest convergence (i.e., minimum) times are deduced by the maximum and minimum values, respectively, of the best nth degree polynomial fit to the D pn data. The colour bar gives information about the actual value of D pn . The grey zones are only indicative line formation heights.

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