\begin{table}%t2
      \caption{Observed mean $R_C$ magnitudes and rms deviations for our Loiano and Asiago observations. The last column report the fiducial border line value, discussed in the text, for each source.}\label{risul}
      %\centering
\par
         \begin{tabular}{crccccccc}	 
            \hline
            \hline
  Source name &2QZ $r$ &Loiano&rms& $N$& Asiago & rms& $N$ & Border-line\\ 
\hline
2QZ J100253.2$-$001728&19.03 &19.03&0.04&4&19.05&0.03&8&0.05\\
2QZ J102615.3$-$000630&19.17 &19.04&0.02&6&19.03&0.03&5&0.05\\
2QZ J103607.4$+$015658&18.57 &18.51&0.03&5&18.51&0.03&5&0.04\\
2QZ J104519.7$+$002615&18.43 &18.43&0.02&5&18.50&0.02&4&0.04\\
2QZ J105355.1$-$005538&19.09 &19.23&0.07&7&19.29&0.04&5&0.06\\
2QZ J105534.3$-$012617&18.50 &18.09&0.01&2&18.12&0.05&4&0.03\\ 
2QZ J110644.5$+$000717&$>$20.93 &20.33&0.25&5&20.39&0.05&6&0.14\\
2QZ J113413.4$+$001041&18.25 &18.18&0.02&7&18.26&0.05&4&0.03\\
2QZ J113900.5$-$020140&18.76 &18.72&0.06&5&18.74&0.03&4&0.04\\
2QZ J114010.5$-$002936&19.97 &19.88&0.09&9&19.96&0.07&6&0.12\\
2QZ J114137.1$-$002730&18.71 &18.85&0.06&7&18.95& --  &1&0.05\\ 
2QZ J114521.6$-$024758&18.53 &18.46&0.01&5&18.50&0.01&3&0.04\\
2QZ J114554.8$+$001023&19.46 &19.45&0.03&6&19.48&0.04&2&0.08\\
2QZ J115909.6$-$024534&18.77 &18.68&0.04&5&18.74&0.05&3&0.04\\
2QZ J120015.3$+$000552&18.63 &18.58&0.02&5&18.64&0.02&2&0.04\\
2QZ J120558.1$-$004216&18.46 &18.62&0.02&5&18.63&0.01&3&0.04\\
2QZ J120801.8$-$004219&18.86 &18.90&0.02&4&18.96&0.01&2&0.05\\
2QZ J121834.8$-$011955&18.25 &16.60&0.16&5&16.25&0.05&2&0.01\\   
2QZ J122338.0$-$015619&18.85 &18.96&0.01&5&19.04&0.03&1&0.05\\
2QZ J123437.6$-$012953&18.97 &18.73&0.05&5&18.76&0.02&1&0.04\\
2QZ J125435.7$-$011822&18.81 &18.87&0.04&4&     &    & &0.04\\  
2QZ J130009.9$-$022601&18.67 &18.77&0.03&6&18.78&0.01&3&0.04\\
2QZ J131635.1$-$002810&19.53 &19.44&0.03&6&     &    & &0.08\\
2QZ J132811.5$+$000227&19.79 &19.71&0.09&5&19.77&0.05&3&0.10\\
2QZ J140021.0$+$001955&19.30 &19.53&0.07&8&19.51&0.03&3&0.08\\
2QZ J140207.7$-$013033&20.14 &19.73&0.08&8&19.87&0.05&4&0.10\\
2QZ J140916.3$-$000012&18.47 &18.41&0.02&8&18.45&0.01&2&0.04\\
2QZ J141040.2$-$023020&19.27 &18.68&0.01&6&18.73&0.03&6&0.04\\
2QZ J142526.2$-$011826&19.47 &19.24&0.01&2&19.31&0.01&2&0.08\\  
\hline
\end{tabular}
\end{table}