\\ Species Tag:        &   19004 & Name:&  H$_3$O$^+$
\\ Version:            &       1 & & Hydronium ion,
\\ Date:       & Jan. 1996      & & $\nu_2$ = 0, 1
\\ Contributor:&  H. M. Pickett & &
\\             &  M. L. Delitsky & &
\\ Lines Listed:       &     420 & Q(300.0)=&   523.7663
\\ Freq. (GHz) $<$     &    9999 & Q(225.0)=&   329.2979
\\ Max. J:             &      16 & Q(150.0)=&   175.2980
\\ LOGSTR0=            &   -10.0 & Q(75.00)=&    62.9188
\\ LOGSTR1=            &   -10.0 & Q(37.50)=&    26.7436
\\ Isotope Corr.:      &     0.0 & Q(18.75)=&    15.8847
\\ Egy. (cm$^{-1}$) $>$&     0.0 & Q(9.375)=&    11.5358 
\\ $\mu_a$ = &                   & A=& 337388.49
\\ $\mu_b$ = &                   & B=& A
\\ $\mu_c$ = & 1.44              & C=& 181374.00
\headend

The two inversion states of the ground state and the $\nu_2$ = 1 state are
included in this calculation. The vibrational designation 0, 1, 2, and
3 are the $0^+$, $0^-$, $1^+$, and $1^-$ states of $\nu_2$,
respectively. The values of $C$ and $D_K$ cannot be determined and are
fixed to those of M. Gruebele, M. Polak, and R. J. Sakally, 1987, J.
Chem.\ Phys.\ {\bf 87}, 3347. The experimental measurements were
reported by D. J. Liu and T. Oka, 1985, Phys.\ Rev.\ Lett.\ {\bf 54},
1787; D. J. Liu, N. N. Haese, and T. Oka, 1985, J. Chem.\ Phys.\ {\bf
82}, 5368; M. Bogey, C. Demuynck, M. Denis, and J. L. Destombes, 1985,
Astron.\ Astrophys.\ {\bf 148}, L11; G. M. Plummer, E. Herbst, and F.
C. DeLucia, 1985, J. Chem.\ Phys.\ {\bf 83}, 1428.

The dipole moment was calculated by P. Botschwina, P. Rosmus, and E. A.
Reinsch, 1984, Chem.\ Phys.\ Lett.\ {\bf 102}, 299. The dipoles used
are $\mu_{01}=1.44$D, $\mu_{12}=0.673$D, $\mu_{03}=0.302$D, and
$\mu_{23}=1.10$D.