\begin{table*}%t2
         \caption{\label{tabcn}Measured CN~lines.}
    $$ 
         \begin{array}{p{0.25\linewidth}crrrr}
            \hline
            \hline
            \noalign{\smallskip}
Star and &  \lambda_{\rm hel}& W_\lambda & V_{\rm hel} & N(0)\\ 
line ID  & \rm\AA & {\rm m\AA} &
{\rm km\ s^{-1}} & 10^{12} {\rm cm}^{-2} \\
            \noalign{\smallskip}
            \hline
            \noalign{\smallskip}
\par
  \bdd 1598 \\
(2,~0)$R_1$(0) &  7906.228 & 1.8(0.5) &  -14.1 &  7.9(2.3) \\
\smallskip
  \bd~1661 \\
(2,~0)$R_1$(0) &  7905.831^a & 3.8(0.5) & -29.2  & 17.1(2.3) \\
(2,~0)$R_1$(0) &  7906.015^a &  3.8(0.5) & -22.2  & 17.1(2.3) \\
(2,~0)$^RQ_{21}$(0)& 7874.351 &  5.3(0.5) & -18.9  & 38.1(3.6) \\
(1,~0)$R_1$(0) &  9186.235 & 17(10) & -22.8  & 28.7(16.9) \\
\smallskip
  \bd~1673 \\
(2,~0)$R_1$(0) &  7906.269 &  4.4(0.5) &  -12.6  & 19.8(2.3) \\
(2,~0)$^RQ_{21}$(0)& 7874:    & {\le}5  & \ldots &   {\le}36 \\
(1,~0)$R_1$(0) &  9186.497 & 52(10) & -14.3  & 88(17) \\
\smallskip
  \bd~1674 \\
(2,~0)$R_1$(0) &  7906.195 &  5.2(0.5) &  -15.4 &  23.7(2.3)\\
(2,~0)$^RQ_{21}$(0)& 7874.422 &  3.0(0.5) &  -16.2 &  21.5(3.6)\\
(1,~0)$R_1$(0) &  9186.354 & 17(10) &  -18.9  & 28.7(16.9)\\
\smallskip
  \bd~1675\\
(2,~0)$R_1$(0) &  7906.009^a &  2.4(0.5) &  -22.4  & 10.8(2.3) \\
(2,~0)$R_1$(0) &  7906.183^a &  5.0(0.5) &  -15.8  & 22.5(2.3) \\
(2,~0)$R_1$(0) &  7906.365^a &  3.0(0.5) & -8.9  & 13.5(2.3) \\
(2,~0)$R_1$(0) &  9186.923^b & 22(10) &  -0.4  & 37(17) \\
(2,~0)$^RQ_{21}$(0)& 7874.252^a &  2.0(0.5) &  -22.6  & 14.0(3.6) \\
(2,~0)$^RQ_{21}$(0)& 7874.394^a &  2.0(0.5) &  -17.2  & 14.7(3.6) \\
(2,~0)$^RQ_{21}$(0)& 7874.591^a &  2.0(0.5) &   -9.7  & 14.7(3.6) \\
            \noalign{\smallskip}
            \hline
         \end{array}
    $$ 
    $^a$ Decomposition not unique.\\
    $^b$ Blended with telluric line.
   \end{table*}