ESR spectra taken at 356 GHz, various temperatures, H||a:
Antlerite_Voight_HIIa_VDI-C_356G_1p4K.csv
Antlerite_Voight_HIIa_VDI-C_356G_1p98K.csv
Antlerite_Voight_HIIa_VDI-C_356G_3K.csv
Antlerite_Voight_HIIa_VDI-C_356G_5K.csv
Antlerite_Voight_HIIa_VDI-C_356G_7K.csv
Antlerite_Voight_HIIa_VDI-C_356G_10K.csv
Antlerite_Voight_HIIa_VDI-C_356G_20K.csv
Antlerite_Voight_HIIa_VDI-C_356G_30K.csv
Antlerite_Voight_HIIa_VDI-C_356G_40K.csv
Antlerite_Voight_HIIa_VDI-C_356G_50K.csv
Antlerite_Voight_HIIa_VDI-C_356G_70K.csv
Antlerite_Voight_HIIa_VDI-C_356G_90K.csv

Columns are Field (T) and transmittance (arbitrary units)
Temperature labels in the filename are setpoints, not the actual temperature
The temperatures in the first column of the fit parameter file (below) should be treated as more accurate


ESR fit parameters graphed in the other panels in the ESR figure, Fig. S4:
ESR_fit_parameters.csv

Columns here are
Temperature in K (more accurate than setpoint above)
g-factor
Resonance field in T
Linewidth (FWHM) in T
Uncertainty in FWHM in T
Uncertainty in g factor
Uncertainty in Hres in T
