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. 11

Polynomial of order 1 (linear fit) to 4 fitted to the monthly mean data by ordinary least-square regression (OLS). The curves are superimposed on the corresponding non-parametric mean (cf. Fig. 5) to show the agreement within 3-σ_m, and on the base data (gray dots). The lower plot is a close-up view of the low range of the upper plot.

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