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Fig. 1

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Above the surface velocity inversions, STAGGER dataset. Patches of 50 by 50 pixels2 extracted from the 30-min-averaged transverse velocity fields vD,t(τ, ti) (left column) computed by the STAGGER simulation and (middle column) inferred by DeepVel at optical depths (top) τ ≈ 1, (middle) τ ≈ 0.1 and (bottom) τ ≈ 0.01. The time-averaged vertical velocity vref,z(τ ≈ {1, 0.1, 0.01}, ti) computed by the STAGGER simulation and resampled to the SDO/HMI resolution is displayed as colored background. (Right column) Scatterplots comparing amplitudes ||vD,t|| to ||vref,t||. The black line represents an ideal solution (i.e., a coefficient of determination R2 = 1).

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