\\ Species Tag:        &   17002 & Name:&  NH3            
\\ Version:            &       3 & & Ammonia
\\ Date:       & Jan. 1984       & & 
\\ Contributor:&  R. L. Poynter  & & 
\\             &                 & & 
\\ Lines Listed:       &     446 & Q(300.0)=&      579.029 
\\ Freq. (GHz) $<$     &    9497 & Q(225.0)=&      378.443 
\\ Max. J:             &      19 & Q(150.0)=&      207.109 
\\ LOGSTR0=            &   -15.2 & Q(75.00)=&       74.559 
\\ LOGSTR1=            &   -11.0 & Q(37.50)=&       27.606 
\\ Isotope Corr.:      &     0.  & Q(18.75)=&       11.251 
\\ Egy. (cm$^{-1}$) $>$&     0.4 & Q(9.375)=&        5.398 
\\ $\mu_a$ = & 0                 & A=& B
\\ $\mu_b$ = & 0                 & B=& 298117.06
\\ $\mu_c$ = & 1.476             & C=& 186726.36
\headend 
 
      The computational method and most of the microwave data are given in R.
L. Poynter and R. K. Kakar, 1975, Astrophys. J. Suppl. {\bf 29}, 87. 
Additional microwave transitions have been reported by B. V. Shinha and P. D.
P. Smith, 1980, J. Mol. Spect. {\bf 80}, 231.  The rotational transitions 
and energy levels were taken from R. Poynter and J. S. Margolis, 1983, 
Mol. Phys. {\bf 48}, 401.  The analysis was based on a very extensive set 
of accurate $\nu_{2}$ measurements reported by R. Poynter and J. S. Margolis, 
1984, Mol. Phys. {\bf 51}, 393, and upon a series of `forbidden' transitions 
in the $\nu_4$ band, reported by E. A.  Cohen, W. H. Weber, R. L. Poynter, 
and J. S. Margolis, 1983, Mol. Phys.  {\bf 50}, 727.  The work of Cohen 
{\it et al.} allowed the C, D$_K$, H$_K$, and L$_K$ constants to be determined, 
thus fixing the energy level scale. The J = 1 $\rightarrow$ 0, K = 0 rotational 
transition was taken from P. Helminger, F. C. De~Lucia, and W. Gordy, 1971, 
J. Mol. Spect. {\bf 39}, 94.  Because of the important applications of these 
rotational lines, the upper frequency limit has been extended to 335 cm$^{-1}$ 
(9.5 THz).  Hyperfine splittings have not been included.