\begin{table} %T4
      \caption{\label{tab4}The additional clusters contained in the redshift-luminosity bins, which are 
        not part of the observed cluster sample with more than\protect30~detected X-ray counts in the RASS  
        and $N_{\rm H} \le 6\times 10^{20}$~cm$^{-2}$.} 
     $$
         \begin{array}{llrrrrrrrrrrr} 
            \hline \hline 
            \noalign{\smallskip} 
 {\rm Name}& {\rm Alt. name}& {\rm RA}(2000) & {\rm Dec}(2000) & z & N_{\rm gal}.& F_{\rm x} &{\rm  Error }
& L_{\rm x} & R_{\rm ap}& L_{\rm x}^* & N_{\rm H} &  L_{\rm x}-{\rm bin}  \\ 
(1) & (2) & (3) & (4) & (5) & (6) & (7) & (8) & (9) & (10) & (11) & (12) & (13) \\ 
            \hline 
                       \noalign{\smallskip} 
 {\rm RX~CJ0028.6{-}2338}&{\rm A0042       }&00~28~39.3& -23~38~14&0.1120&  5&  4.836&  13.3&  1.491& 13.0&  1.521&    1.8&   4 \\
 {\rm RX~CJ0107.8{-}3643}&{\rm A2871       }&01~07~49.1& -36~43~38&0.1186& 19&  3.557&  13.6&  1.229& 12.0&  1.254&    1.9&   4 \\ 
 {\rm RX~CJ0108.9{-}1537}&{\rm A0151S      }&01~08~55.2& -15~37~44&0.0970& 13&  3.703&  15.3&  0.845& 10.0&  0.889&    1.8&   3 \\   
 {\rm RX~CJ0548.8{-}2154}&{\rm             }&05~48~50.4& -21~54~43&0.0928&  9&  3.977&  12.3&  0.825& 11.5&  0.859&    3.0&   3 \\
 {\rm RX~CJ1038.4{-}2454}&{\rm             }&10~38~24.1& -24~54~10&0.1230& 10&  4.134&  13.5&  1.545&  8.5&  1.661&    5.5&   4 \\
 {\rm RX~CJ1512.8{-}0128}&{\rm             }&15~12~51.0& -01~28~47&0.1223&  2&  3.354&  18.5&  1.238&  5.5&  1.423&    5.2&   4 \\
 {\rm RX~CJ2220.5{-}3509}&{\rm A3866       }&22~20~34.6& -35~09~53&0.1544&  1&  9.489&   8.8&  5.656&  8.5&  6.215&    1.1&   7 \\
 {\rm RX~CJ2359.3{-}6042}&{\rm A4067       }&23~59~19.2& -60~42~00&0.0989& 30&  4.544&  20.5&  1.080&  9.5&  1.149&    2.4&   3 \\
            \hline 
         \end{array} 
      $$ 
\end{table}