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Fig. 1

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Parameters relevant for wave propagation, calculated from the inversion. The upper row gives the magnetic field strength, inclination, and filling factor. The bottom row gives the acoustic speed, Alfvén speed, and plasma β parameter. The maps are taken at the bottom of the photosphere at constant logτ5 =  −0.2. The values of density and gas pressure are calculated assuming hydrostatic equilibrium in each vertical column from the inversions and averaged over the magnetic and non-magnetic atmospheric components.

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