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Fig. 6

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11-year running mean weighted Ap and F10.7 indices along with (δfoF2)11y, (δfoF1)11y, (δhmF2)11y, and retrieved (δTex)11y, ([O]200)11y, ([O]/[N2]200)11y long-term variations at Rome. Curves – polynomial approximations. Numbers are given to identify the ups and downs with the corresponding downs/ups in the Ap index long-term variations. Straight line is the linear trend in (δfoF2)11y estimated over the (1962–2010) period.

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