\begin{table}%t1
\caption{\label{table:1}Observed line parameters in TMC-1 and L1527.}
\par
%\centering
\par
\small\begin{tabular}{llr  rcc  ccc}
\hline
\hline 
\noalign{\smallskip}      
&&&\multicolumn{1}{c}{Frequency}&$T_{\rm MB}$\tablefootmark{b}  &  ${\it \Delta} v$\tablefootmark{b}  &  $\int T_{\rm MB} {\rm d}v$ ($3  {\sigma}$)    &    rms\tablefootmark{c}  &     $V_{\rm LSR}$\tablefootmark{b} 
\\
\multicolumn{1}{c}{Species}&\multicolumn{1}{c}{Transition}&\multicolumn{1}{c}{$S$\tablefootmark{a}}&\multicolumn{1}{c}{(GHz)}&(K)&(km s$^{-1}$)&(K km s$^{-1}$)&(mK)&(km s$^{-1}$) \\ \hline            
\multicolumn{9}{c}{TMC-1}
 \\                 
CCH&$J=3/2{-}1/2 \ F=1{-}1$&0.17&87.284156(30)&1.538(55)&0.49(2)&0.795(13)&8.8 &5.907(9) \\
$N=1{-}0$&$J=3/2{-}1/2 \ F=2{-}1$&1.67&87.316925(4)&2.144(78)&0.59(3)&1.336(15)&8.7 &5.869(11) \\
&$J=3/2{-}1/2 \ F=1{-}0$&0.83&87.328624(6)&1.571(59)&0.56(2)&0.924(15)&9.2 &5.912(10) \\
&$J=1/2{-}1/2 \ F=1{-}1$&0.83&87.402004(5)&1.711(101)&0.55(4)&0.963(22)&13.4 &5.853(16) \\
&$J=1/2{-}1/2 \ F=0{-}1$&0.33&87.407165(11)&1.549(110)&0.53(4)&0.860(21)&14.6 &5.789(19) \\
&$J=1/2{-}1/2 \ F=1{-}0$&0.17&87.446512(23)&1.424(52)&0.52(2)&0.808(15)&9.5 &5.914(9) \\ \cline{2-9}
C$^{13}$CH&$J=3/2{-}1/2 \ F_1=2{-}1 \ F=5/2{-}3/2$&2.00 &85.2293354(26)&0.059(5)&0.52(5)&0.032(5)&3.1 &5.84(2)\tablefootmark{d} \\
$N=1{-}0$&$J=3/2{-}1/2 \ F_1=2{-}1 \ F=3/2{-}1/2$&1.26 &85.2328050(22)&0.035(6)&0.56(10)&0.020(5)&3.2 &5.89(4)\tablefootmark{d} \\
&$J=3/2{-}1/2 \ F_1=1{-}0 \ F=3/2{-}1/2$&1.27 &85.2569879(33)&0.041(5)&0.43(6)&0.019(4)&3.4 &5.83(3)\tablefootmark{d} \\
&$J=1/2{-}1/2 \ F_1=1{-}1 \ F=1/2{-}3/2$&0.62 &85.3039898(33)&0.021(4)\tablefootmark{e}&0.69(17)\tablefootmark{e}&0.014(6)\tablefootmark{e}&2.7 &5.89(7)$^{{\rm d, e}}$ \\
&$J=1/2{-}1/2 \ F_1=1{-}1 \ F=3/2{-}3/2$&1.21 &85.3074593(33)&0.034(4)&0.53(8)&0.020(5)&2.9 &5.83(3)\tablefootmark{d} \\ \cline{2-9}
$^{13}$CCH&$J=3/2{-}1/2 \ F_1=2{-}1 \ F=5/2{-}3/2$&2.00 &84.119329(17)&0.037(4)&0.52(7)&0.020(4)&2.8 &5.84(3) \\
$N=1{-}0$&$J=3/2{-}1/2 \ F_1=2{-}1 \ F=3/2{-}1/2$&1.22 &84.124143(20)&0.026(5)&0.46(10)&0.012(4)&2.8 &5.80(4) \\
&$J=1/2{-}1/2 \ F_1=0{-}1 \ F=1/2{-}1/2$&0.46 &84.183977(28)&0.026(5)\tablefootmark{e}&0.28(7)\tablefootmark{e}&0.007(3)\tablefootmark{e}&3.5 &5.71(3)\tablefootmark{e} \\ \hline                    
\multicolumn{9}{c}{L1527} \\                    
CCH&$J=3/2{-}1/2 \ F=1{-}1$&0.17&87.284156(30)&1.932(19)&0.53(1)&1.112(20)&12.8 &6.026(2) \\
$N=1{-}0$&$J=3/2{-}1/2 \ F=2{-}1$&1.67&87.316925(4)&$--$&$--$&3.592(21)&13.3 &$--$ \\
&$J=3/2{-}1/2 \ F=1{-}0$&0.83&87.328624(6)&$--$&$--$&2.447(23)&14.4 &$--$ \\
&$J=1/2{-}1/2 \ F=1{-}1$&0.83&87.402004(5)&$--$&$--$&2.602(21)&13.3 &$--$ \\
&$J=1/2{-}1/2 \ F=0{-}1$&0.33&87.407165(11)&2.775(25)&0.60(1)&1.801(24)&13.5 &5.846(3) \\
&$J=1/2{-}1/2 \ F=1{-}0$&0.17&87.446512(23)&2.014(19)&0.52(1)&1.162(21)&13.3 &6.011(2) \\ \cline{2-9}
C$^{13}$CH&$J=3/2{-}1/2 \ F_1=2{-}1 \ F=5/2{-}3/2$&2.00 &85.2293354(26)&0.163(10)&0.43(3)&0.078(6)&4.4 &5.950(5)\tablefootmark{f} \\
$N=1{-}0$&$J=3/2{-}1/2 \ F_1=2{-}1 \ F=3/2{-}1/2$&1.26 &85.2328050(22)&0.104(10)&0.56(3)&0.060(7)&3.9 &5.950(5)\tablefootmark{f} \\
&$J=3/2{-}1/2 \ F_1=1{-}0 \ F=1/2{-}1/2$&0.65 &85.2477276(33)&0.058(7)&0.50(7)&0.028(6)&3.9 &5.950(5)\tablefootmark{f} \\
&$J=3/2{-}1/2 \ F_1=1{-}0 \ F=3/2{-}1/2$&1.27 &85.2569879(33)&0.098(8)&0.45(4)&0.047(6)&4.2 &5.950(5)\tablefootmark{f} \\
&$J=1/2{-}1/2 \ F_1=1{-}1 \ F=1/2{-}3/2$&0.62 &85.3039898(33)&0.046(5)&0.55(7)&0.026(4)&2.4 &5.950(5)\tablefootmark{f} \\
&$J=1/2{-}1/2 \ F_1=1{-}1 \ F=3/2{-}3/2$&1.21 &85.3074593(33)&0.110(7)&0.42(3)&0.050(3)&2.7 &5.950(5)\tablefootmark{f} \\
&$J=1/2{-}1/2 \ F_1=0{-}1 \ F=1/2{-}1/2$&0.62 &85.3140918(33)&0.051(5)&0.42(4)&0.024(4)&2.8 &5.950(5)\tablefootmark{f} \\ \cline{2-9}
$^{13}$CCH&$J=3/2{-}1/2 \ F_1=2{-}1 \ F=5/2{-}3/2$&2.00 &84.119329(17)&0.093(5)&0.48(3)&0.047(2)&1.6 &5.94(1) \\
$N=1{-}0$&$J=3/2{-}1/2 \ F_1=2{-}1 \ F=3/2{-}1/2$&1.22 &84.124143(20)&0.056(6)&0.53(7)&0.033(3)&1.6 &5.95(3) \\
&$J=3/2{-}1/2 \ F_1=1{-}0 \ F=1/2{-}1/2$&0.66 &84.151352(16)&0.030(5)&0.48(9)&0.015(2)&1.5 &5.90(4) \\
&$J=3/2{-}1/2 \ F_1=1{-}0 \ F=3/2{-}1/2$&1.33 &84.153305(15)&0.059(4)&0.51(4)&0.034(2)&1.4 &5.89(2) \\
&$J=1/2{-}1/2 \ F_1=0{-}1 \ F=1/2{-}1/2$&0.46 &84.183977(28)&0.024(3)&0.36(5)&0.011(2)&2.0 &5.90(2) \\
&$J=1/2{-}1/2 \ F_1=1{-}1 \ F=1/2{-}3/2$&0.46 &84.192487(30)&0.029(4)&0.50(8)&0.016(4)&2.8 &5.90(3) \\
&$J=1/2{-}1/2 \ F_1=1{-}1 \ F=3/2{-}3/2$&1.22 &84.206865(19)&0.067(3)&0.46(3)&0.033(2)&1.7 &5.90(1) \\
&$J=1/2{-}1/2 \ F_1=1{-}1 \ F=1/2{-}1/2$&0.22 &84.225376(20)&$--$&$--$&$\leq$ 4.6&3.1 &$--$ \\ 
\hline                 
\end{tabular}
\tablefoot{
The numbers in parentheses represent the errors in units of the last significant digits.
\tablefoottext{a}{Intrinsic line strength.}
\tablefoottext{b}{Obtained by the Gaussian fit.}
\tablefoottext{c}{The rms noise at an emission free region averaged over the line width. For non detected lines, the line widths of 0.5~km~s$^{-1}$ are assumed.}
\tablefoottext{d}{Calculated on the basis of the rest frequencies of the C$^{13}$CH lines obtained in this study (Table~\ref{table:A1}).}
\tablefoottext{e}{Marginal detection.}
\tablefoottext{f}{See Sect.~3.1 and Appendix~A.}}\vspace*{1mm}
\end{table}