\begin{table}%t1
\caption{Upper level $u$, wavelength $\lambda_0 [\AA]$, spectral 
line radiance $E^{\rm obs}_{\rm ul}[{\rm mW}/({\rm m}^2~{\rm s}~{\rm sr})]$, 
spectral radiance at line center $L_{u1}(\lambda _0)
[{\rm mW}/({\rm m}^2~{\rm s}~{\rm sr}~\AA)]$, and corresponding 
brightness temperature $T_{\rm b}$ [K] for  Lyman lines of the two prominence regions 
given in Fig.~\ref{Fig.1} as rhombs and squares.}
\label{table:1a}      
%\centering
\par
\begin{tabular}{c c c c c c c c}        
\hline    \hline \noalign{\smallskip}                      
u & $\lambda_0$ &  &  brightest &  &  & faintest &  \\[0.3ex] 
\hline\noalign{\smallskip}
 & & $E^{\rm obs}_{u1}$ & $L_{u1}(\lambda _0)$ & $T_{\rm b}$ & 
$E^{\rm obs}_{u1}$ & $L_{u1}(\lambda _0)$ & $T_{\rm b}$\\[0.5ex]
\hline                
5 & 949.8 & 69.1 & 0.057 & 4899 & 25.9 & 0.022 & 4752 \\  
6 & 937.8 & 36.8 & 0.077 & 4999 & 14.1 & 0.031 & 4855 \\
7 & 930.8 & 23.3 & 0.056 & 4979 &  9.0 & 0.023 & 4841 \\
8 & 926.2 & 18.0 & 0.051 & 4985 &  6.9 & 0.020 & 4840 \\ 
9 & 923.2 & 15.7 & 0.045 & 4979 &  6.0 & 0.016 & 4820 \\
10& 921.0 & 12.1 & 0.039 & 4966 &  4.2 & 0.014 & 4809 \\ 
11& 919.4 & 12.4 & 0.040 & 4977 &  4.2 & 0.015 & 4827 \\
12& 918.1 & 13.3 & 0.042 & 4991 &  3.6 & 0.012 & 4799 \\
13& 917.2 & 10.2 & 0.037 & 4975 &  4.2 & 0.016 & 4864 \\
14& 916.4 & 11.9 & 0.045 & 5009 &  2.9 & 0.011 & 4794 \\
16& 915.3 & 11.0 & 0.037 & 4983 &  3.6 & 0.014 & 4835 \\
17& 914.9 & 10.4 & 0.037 & 4985 &  7.9 & 0.012 & 4814 \\
18& 914.6 & 10.3 & 0.034 & 4973 &  2.6 & 0.012 & 4815 \\
19& 914.3 & 13.1 & 0.033 & 4970 &  4.2 & 0.011 & 4803 \\
\hline                                   
\end{tabular}
\end{table}