Is the F10.7cm – Sunspot Number relation linear and stable? | Journal of Space Weather and Space Climate

Topical Issue - Space climate: The past and future of solar activity

Open Access

Fig. 22

Plot of F_10.7 versus S_N, using the original SN series (version 1). The data are smoothed by a 13-month running mean. The line connects successive months, and thus illustrate the chronological evolution. The curve is colored in blue or red for dates before and after 1981.

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