The instantenous output for the WACCM6 pre-industrial simulation, 10% present atmospheric level (PAL) of O2 simulation, 1% PAL simulation, and 0.1% PAL simulation, is supplied in the PI_WACCM6_spectra_files.zip, Ten_pc_O2_WACCM6_spectra_files.zip, One_pc_O2_WACCM6_spectra_files.zip, and the Zero1_pc_O2_WACCM6_spectra_files.zip zip files, respectively. In the zip files are netCDF files, which can be read in using Python and the xarray library, although many alternative methods exist. The single file for the 150% PAL run is supplied as b.e21.BWma1850.f19_g17.150pc_o2.002.cam.h1.0037-03-22-00000.nc.

For the Planetary Spectrum Generator results, the results are included in files such as Zero1_PSG_output_clouds_5_100_10pc.zip and Ten_PSG_output_clouds_5_100_10pc.zip. The simulation is indicated at the start, and the distance is indicated at the end (10pc, 50 pc, etc.). 5_100 indicates that 5 microns and 100 microns were used as the effective size of particles in water and ice clouds, respectively. 1_1 indicates that 1 micron was used for both water and ice clouds. The .txt files are labelled depending on the PSG runs. Any files that have a filename which starts with 'N2' was used as a baseline, pure N2 atmosphere (note that clouds were still included). Files that have 'LUVOIR' in the filename are either simulations that used the LUVOIR A or LUVOIR B templates from PSG, modifying the LUVOIR B template to have a 6 m diameter. These files that used LUVOIR B included the text '_6m_' in the file name. Any file that used the HabEx with a starshade template, have 'HabEx_SS' in the file name. Idealised telescopes have 'Ideal' in the file name. 'One50', 'PI', 'Ten', 'One', and Zero1' in the file names indicate they are from the 150% PAL, PI, 10% PAL, 1% PAL, and 0.1% PAL simulations, respectively.

The Earth's ephemeris data was collected from the PSG website and placed into a .csv file. The headings correspond to the simulation date, the day of the year (0-365), the solar longitude (in degrees), the solar latitude (in degrees), the orbital phase (in degrees), the distance in AU between the planet and the star, the relative velocity between the observer and the object in kilometres per second, and the season which also describes orbital phase. 

The .txt files were processed in Python to produce the figures and quantitative results given in the associated manuscript.

The .txt files were produced by using a locally downloaded version of PSG. Converting between the WACCM6 .nc files to a binary file format (.gcm files) that could be processed through PSG to evntually produce the .txt output utilised the WACCM_to_PSG.py script.