Data associated with Huang et al., 2024, "Constraints on the gas-phase C/O ratio of DR Tau's outer disk from CS, SO, and C2H observations," ApJ, 973, 135. The raw data can be obtained by requesting data from program W21BE (PI: J. Huang) from the NOEMA archive. Images images.tar: FITS files of image cubes and moment maps Measurement sets (CASA format) drtau_LINENAME_corrected.ms.tar: Measurement set for a given line, corresponding to drtau_LINENAME_selfcal-contsub.uvt in lines_contsub_uvt.tar drtau_ui_cont_corrected.ms.tar: Continuum measurement set corresponding to the UI baseband, generated from w21be-ui-cont-selfcal.uvt in continuum_uvt.tar UV tables (GILDAS format) LR_uvt.tar: Pipeline-calibrated UV tables of low-resolution data (see w21be-tables-LR.clic) HR_uvt.tar: Pipeline-calibrated UV tables of high-resolution data (see w21be-tables_HR.clic) continuum_uvt.tar: Self-calibrated, spectrally averaged continuum UV tables generated from LR_uvt.tar lines_contsub_uvt.tar: Self-calibrated, continuum-subtracted line UV tables generated from the UV tables in HR_uvt.tar Scripts w21be-tables-LR.clic: CLIC script used to output UV tables of low-resolution data from the pipeline-calibrated data (output contained in LR_uvt.tar) w21be-tables_HR.clic: CLIC script used to output UV tables of high-resolution data from the pipeline-calibrated data (output contained in HR_uvt.tar) finalimaging.py: Script used to generate images in images.tar linestacking.py: Script used to create stacked C2H image Other calib.tar: Files output by NOEMA pipeline