The transition frequencies were reported by
(1) J.-T. Spaniol, K. L. K. Lee, O. Pirali, C. Puzzarini,
and M.-A. Martin-Drumel,
2023, Phys. Chem. Chem. Phys., 25, 6397.
The transition frequencies should be sufficiently accurate for all
observational purposes. Transitions with calculated uncertainites
exceeding 0.2 MHz should be viewed with some caution.
14N hyperfine parameters were not determined experimentally,
but may be estimated fairly accurately.
The dipole moment is from a quantum-chemical calculation in
(2) Z. Buchanan, K. L. K. Lee, O. Chitarra, M. C. McCarthy,
O. Pirali, and M.-A. Martin-Drumel,
2021, J. Mol. Spectrosc., 377, Art. No. 111425.
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