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Fig. 4


Mode parameters, amplitude A (top row), background power b0 (middle row), and width Γ (bottom row) for two modes (n = 0,ℓ = 652 (left three columns); n = 1,ℓ = 449 (right three columns)) for dormant ARs and QRs as a function of the central meridian distance λ of the region centres (left), duty cycle f (middle), and magnetic-activity index B (right). Dashed curves show the quadratic fit (in λ) and the linear fit (in f and B) through the mode parameters.

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