Zoom-in of the integrated intensity (moment 0, upper panels) and intensity weighted velocity (moment 1, lower panels) maps of the H₂CO, HDCO, and D₂CO line emission toward the IRS 63 disk (same transitions as in Fig. 1). The continuum emission at 1.3 mm is in black (contours from 10σ with steps of 500σ, with σ = 0.7 mJy beam⁻¹). The transition and upper-level energy are labeled at the top, and the beam is shown in the lower left of each panel.