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The experimental data have been taken
from
(1) S. Thorwirth, M. C. McCarthy, J. B. Dudek,
and P. Thaddeus,
2004, J. Mol. Spectrosc., 225, 93;
and from
(2) J. August, H. W. Kroto, D. McNaughton,
K. Phillips, and D. R. M. Walton,
1988, J. Mol. Spectrosc., 130, 424.
No uncertainties were given for the lines in (2);
based on the partial rms error, they were estimated
to be 20 kHz.
b-type transitions cannot be predicted reliably
at present. Moreover, they are very weak.
Predictions may be sufficiently reliable if the
uncertainties do not exceed 100 kHz.
14N hyperfine structure may be resolved for
transitions with small quantum numbers. Therefore,
a separate
hyperfine calculation is provided up to J' = 10.
NOTE: The partition function
does take into account hyperfine splitting !
The a-dipole moment component is from an ab initio
calculation in (1).
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