Species Tag:        &   18003 & Species Name:&  H2O           
\\ Version:            &       5 & & Water
\\ Date:       &  Nov. 1999      & &
\\ Contributor:&  J. C. Pearson  & &
\\             &  H. M. Pickett  & &
\\ Lines Listed:       &    3086 & Q(300.0)=&      178.115
\\ Freq. (GHz) $<$     &   29800 & Q(225.0)=&      116.011
\\ Max. J:             &      23 & Q(150.0)=&       63.680
\\ LOGSTR0=            &   -26.7 & Q(75.00)=&       23.169
\\ LOGSTR1=            &   -26.7 & Q(37.50)=&        8.580
\\ Isotope Corr.:      &     0.0 & Q(18.75)=&        3.033
\\ Egy. (cm$^{-1}$) $>$&     0.0 & Q(9.375)=&        1.257
\\ $\mu_a$ = &                   & A=& 835840.3
\\ $\mu_b$ = & 1.84718           & B=& 435351.7
\\ $\mu_c$ = &                   & C=& 278138.7
\headend 

The data set used in this fit includes all the micorowave measurements reviewed in J.~C.~Pearson, T.~Anderson, E.~Herbst, F.~C. De Lucia and P.~Helminger, 1991, Astrophys J.~{\bf 379}, L41, additional measurements were used from J.~C.~Pearson, 1995, Ph.D. Thesis Duke University, S. Belov, 1996, Private Communication, F.~Matsushima, H.~Odashima, T.~Iwasaki, S.~Tsunekawa, K.~Takagi, 1995, J.~Mol.~Struct.~{\bf 352-353}, 371, and P.~Chen, J.~C.~Pearson, S.~Matsuura, G.~A.~Blake and H.~M.~Pickett, 1999, Astrophys.~J., In Press.  FTIR rotational data was taken from J.~Kauppinen, T.~Karkkainen and E.~Kyro, 1978, J.~Mol.~Spectrosc.~{\bf 71}, 15, J.~W.~C.~Johns, 1985, J.~Opt.~Soc.~Am.~{\bf B2}, 1340, R.~Paso and V.~M.~Hornman, 1995, J.~Opt.~Soc.~Am. {\bf B12}, 1813 and R.~A.~Toth, 1999, Private Communication, FTIR band transitions were taken from R.~A.~Toth, 1999, Private Communication and Energy Levels taken from R.~A.~Toth, 1998, J.~Mol. Spectrosc.~{\bf 190}, 379 and O.~L.~Polyansky, N.~Zobov, S.~Viti, J.~Tennyson, P.~Bernath and L.~Wallace, 1997, J.~Mol.~Spectrosc.~{\bf 186}, 422. All the data was forced into the fit and a reduced RMS of 1.9 was obtained for a combined fit of the ground and $\nu_2$ data.  This represents the ground state version only.  It should be noted that there is minimal data at the highest J values.  The quoted errors are expected to be about 1/2$\sigma$
The fitting method is described in P.~Chen {\it et al.}.  

The intensities were calculated using the method in C.~Camy-Peyret {\it et al.}, 1985, J.~Mol.~Spectrosc.~{\bf 113}, 208.  A value of 1.84718 Debye was used along with corrections for the planarity conditions.  This agrees will with observed IR intensities up to $\DeltaK_a=3$ transitions.  Higher order planarity terms are needed for agreement with $\DeltaK_a=5,7,9...$ transitions.   The partition function includes the $\nu_2$ state.  Classical corrections for higher temperatures are given in P.~Chen {\it et al.}.