ALMA 3-mm center-to-limb variation (red boxes) for: (a) p-mode frequency (i.e., a₃ in Eq. (2)), (b) p-mode relative strength, i.e., rms associated with p-mode/⟨T_b⟩ (%). AIA 1600 Å center-to-limb variation (red boxes) for: (c) p-mode frequency (i.e., a₃ in Eq. (2)), (d) p-mode relative strength, i.e., rms associated with p-mode/⟨I⟩ (%). Blue lines correspond to linear fits of the corresponding measurements. In each panel, top, middle, and bottom plots correspond to the entire FoV, network, and cell, respectively.