Fig. 6


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Example of full disk longitudinal magnetograms taken on 9 March 1994 by magnetographs at (a) MWO, (b) NSO SPM, and (c) WSO. White/black halftones correspond to positive/negative polarity. For display purposes, MWO magnetogram is scaled between ±50 G, while NSO SPM is scaled between ±100 G. Contours for WSO magnetograms are shown in upper part of panel c.

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