Fig. 2.
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The longer-term trend in how the various magnetographs compare to one another. For each instrument comparison, the 181-day running mean of Δnmag (solid lines), ΔBlos (dashed lines), and Δϕtot (dotted lines). The arrows mark the relocation of the SOLIS instrument suite in 2004 and the replacement of the VSM modulator in 2006.
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