The experimental data was taken from
(1) P. Dréan, J. Demaison, L. Poteau, and J.-M. Denis, 1996, J. Mol. Spectrosc. 176, 139.
Transitions with uncertainties ≥ 100 kHz have not been merged.
The predictions should be reliable up to about 1 THz.
The dipole moment was assumed to agree with that of the main species, see e044502.cat.
The partition function takes into account v= 0 only.