carsus-data-cmfgen mirrors the atomic data hosted on John Hillier's website https://sites.pitt.edu/~hillier/web/CMFGEN.htm
Note: If anyone is using this data, then please cite the original database. To learn more about the CMFGEN atomic data, please refer to https://ui.adsabs.harvard.edu/abs/2011Ap%26SS.336...87H/abstract.