Montage of JWST and interferometric data for SSTTau042021. MIRI MRS images from JWST reveal H₂ S(2) emission at 12.278-μm (Arulanantham et al. 2024). The white contours indicate the mid-infrared scattered-light continuum at 12.2-μm, and the dashed white line marks the rotation axis of the disk at PA = 73.5°. In archival ALMA data and new NOEMA observations, the cyan contours show molecular emission lines of HCO⁺ 3—2, ¹³CO 2—1, C¹⁸O 2-1, ¹²CO 2-1, and ¹²CO 3-2, and the yellow contours represent the 0.85 mm continuum emission at 1 mJy/beam. The beige circles in the bottom left corner of each panel represent the average theoretical FWHM of the PSF for JWST data, calculated from the relation reported by Law et al. (2023), and the beam of the molecular line emission is shown as a cyan ellipse in the top right corner of each panel. The contours for HCO⁺ (3-2) range from 0.02 to 0.2 Jy/beam km/s with a step of 0.02 Jy/beam km/s, i.e., 2.5 œ; for ¹³CO (2-1), they range from 0.02 to 0.08 Jy/beam km/s with a step of 0.01 Jy/beam km/s, i.e., 3.5 œ; for C¹⁸CO (2-1), they range from 0.008 to 0.016 Jy/beam km/s with a step of 0.008 Jy/beam km/s, i.e., 3.5 œ; for ¹²CO (2-1), from 0.01 to 0.08 Jy/beam km/s with a step of 0.02 Jy/beam km/s, i.e., 6 œ; and for ¹²CO (3-2), from 0.06 to 0.8 Jy/beam km/s with a step of 0.06 Jy/beam km/s, i.e., 4.2σ.