\\ Species Tag:        &   25001 & Name:&  CCH            
\\ Version:            &       1 & &  Ethynyl, X $^2 \Sigma$ 
\\ Date:       & Mar. 1983       & & 
\\ Contributor:&   H. M. Pickett & & 
\\             &                 & & 
\\ Lines Listed:       &     114 & Q(300.0)=&      574.249 
\\ Freq. (GHz) $<$     &    2351 & Q(225.0)=&      430.923 
\\ Max. J:             &      28 & Q(150.0)=&      287.674 
\\ LOGSTR0=            &    -5.0 & Q(75.00)=&      144.477 
\\ LOGSTR1=            &    -4.0 & Q(37.50)=&       72.912 
\\ Isotope Corr.:      &       0 & Q(18.75)=&       37.145 
\\ Egy. (cm$^{-1}$) $>$&     0.0 & Q(9.375)=&       19.284 
\\ $\mu_a$ = & 0.8               & A=& 
\\ $\mu_b$ = &                   & B=& 43674.534
\\ $\mu_c$ = &                   & C=& 
\headend 
 
      The spectral data and Hamiltonian are from C. A. Gottlieb, E. W.
Gottlieb, and P. Thaddeus, 1983, Astrophys. J. {\bf 264}, 740--745.  The dipole
moment is an assumed value.