\\ Species Tag:        &   54006 & Name:&  CCCO-18       
\\ Version:            &       1 & & Tricarbon monoxide,
\\ Date:       &  Jan. 1990      & & X $^1 \Sigma ^+$,  
\\ Contributor:&  R. L. Poynter  & & $^{18}$O isotope
\\             &                 & &
\\ Lines Listed:       &      99 & Q(300.0)=&     1368.044
\\ Freq. (GHz) $<$     &     903 & Q(225.0)=&     1026.124
\\ Max. J:             &      99 & Q(150.0)=&      684.069
\\ LOGSTR0=            &    -5.6 & Q(75.00)=&      342.137
\\ LOGSTR1=            &    -3.7 & Q(37.50)=&      171.238
\\ Isotope Corr.:      & -2.690  & Q(18.75)=&       85.783
\\ Egy. (cm$^{-1}$) $>$&     0.0 & Q(9.375)=&       43.063
\\ $\mu_a$ = & 2.391             & A=&
\\ $\mu_b$ = &                   & B=&4572.2943(14)
\\ $\mu_c$ = &                   & C=&
\headend

The line measurements were taken from R. D. Brown {\it et al.}, 1985, J.
Am. Chem. Soc. {\bf 107}, 4112.  The dipole moment was assumed to be
the same as for the parent species.