\begin{table}%tC.1  
\caption{\label{Table: redshift coverage species}The ranges in redshifts covered by our observations for the five lowest rotational lines of~H$_2$,  HD, and~HeH$^+$.}
%\centering
\par
\begin{tabular}{lrcrccc   cc}
\hline \hline  \noalign{\smallskip}
Species&  Frequency & Transitions& 	$E_u$& A-coeff.	 &AC [GHz]&  AOS [GHz] &  AOS [GHz] & AC	 [GHz]\\
& [GHz]  & $J_u$$-$$J_l$&[K] & [s$^{-1}$]  & 486.5$-$492.0& 542.0$-$547.5&  547.0$-$563.0 &  563.0$-$578.0\\
\hline \noalign{\smallskip}
H$_2$&10~621    & 2$-$0	&510  &2.94 $\times$ 10$^{-11}$&	$z$ = 20.83$-$20.59	& 18.60$-$18.40	&	18.42$-$17.87	&	17.87$-$17.38 \\
&17~594  &3$-$1	&1015&4.76 $\times$ 10$^{-10}$ &	$z$ = 35.16$-$34.76& 31.46$-$31.14	&	31.16$-$30.25	&	30.25$-$29.44 \\
&24~410 &4$-$2	&1681&2.75 $\times$ 10$^{-9}$&	$z$ = 49.18$-$48.61	& 44.04$-$43.58	&	43.63$-$42.36	&	42.36$-$41.23 \\
&31~011 & 5$-$3	&2503 &9.83 $\times$ 10$^{-9}$ &	$z$ = 62.74$-$62.03	& 56.22$-$55.64	&	55.69$-$54.08	&	54.08$-$52.65\\
&37~348  &6$-$4	&3474&2.64 $\times$ 10$^{-8}$&	$z$ = 75.77$-$74.91	& 67.91$-$67.22	&	67.28$-$65.34	&	65.34$-$63.62 \\
HD &2~675 & 1$-$0	&128&5.32 $\times$ 10$^{-8}$&	$z$ = 4.50$-$4.37	& 3.94$-$3.89	&	3.89$-$3.75	&	3.75$-$3.63 \\
&5332 & 2$-$1	&384&5.05 $\times$ 10$^{-7}$&	$z$ = 9.96$-$9.84	& 8.84$-$8.74	&	8.75$-$8.47	&	8.47$-$8.22 \\
&7952 & 3$-$2	&766&1.80 $\times$ 10$^{-6}$&	$z$ = 15.35$-$15.16	& 13.67$-$13.52	&	13.54$-$13.12	&	13.12$-$12.76 \\
&10~518  &4$-$3	&1271&4.31 $\times$ 10$^{-6}$&	$z$ = 20.62$-$20.38	& 18.41$-$18.21	&	18.23$-$17.68	&	17.68$-$17.20 \\
&13~015  &5$-$4	&1895&8.35 $\times$ 10$^{-6}$&	$z$ = 25.75$-$25.45	& 23.01$-$22.77	&	22.79$-$22.12	&	22.12$-$21.52 \\
  HeH$^+$ &2~010 &  1$-$0	&96 &0.109 &	$z$ = 3.13$-$3.09	& 2.71$-$2.67	&	2.67$-$2.57	&	2.57$-$2.48 \\
&4009  &2$-$1	&289&1.04&	$z$ = 7.24$-$7.15	& 6.40$-$6.32	&	6.33$-$6.12	&	6.12$-$5.94 \\
&5984 & 3$-$2	&576&3.75&	$z$ = 11.30$-$11.16                   & 10.04$-$9.93      &                   9.94$-$9.63         &                   9.63$-$9.35 \\
&7925 & 4$-$3	&956&9.14&	$z$ = 15.29$-$15.11                   & 13.62$-$13.48     &                   13.49$-$13.08       &                   13.08$-$12.71 \\
&9821 &5$-$4	&1~428&18.1&	$z$ = 19.19$-$18.96                   & 17.12$-$16.94     &                   16.95$-$16.44       &                   16.44$-$15.99 \\
\hline
\end{tabular}
\end{table}