a) Average CLV, ⟨ v(0,y) ⟩ _t, along the meridional centerline with an 8th-order polynomial fit, v_clv(y) (red curve) in m/s against the distance y to the disk center in arcsec. b) Calibrated, radially symmetrical CLV model, v_clv(r), with axis given in arcsec. c) Convective blueshift, v_b(r), in along the meridian (red solid curve) and equator (blue solid curve) and their difference (black solid curve) displayed in m/s against cosθ with heliocentric angle, θ. A synthesis of the spectral line from COBOLD simulations (green dashed curve) is added. The dotted black box refers to the preferred sunspot location.