Format for the cross section files
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Column 1: Energy index
Column 2: Energy in eV
Column 2+i: Cross section in Angstrom**2 for impact excitation of the ground state into the i-th lowest singlet or triplet state.

The results for the singlet states calculated using the Born approximation are in "born_results_for_singlets_only/".
The results for the triplet states calculated using the R-matrix method are in "R-matrix_results_for_triplets_only/".

Note that the Born and R-matrix cross section data set uses a different energy grid and range.
