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Fig. 2.

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(a) RP of the weekly unfiltered SSN2. (b) RP of the weekly unfiltered F10.7. The red box in the RP of the SSN identifies the period associated with the RP of the F10.7. (c) RP of the low-frequency part of SSN2. (d) RP of the high-frequency part of SSN2.

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