\begin{table}%t2
%\centering
\par
\caption{Radial velocity measurements of CoRoT-Exo-2 obtained by SOPHIE (S), CORALIE (C) and HARPS (H). The radial velocity shifts between the different spectrographs are not included.} 
\label{tab:obslog} 
\begin{tabular}{llll}
\hline\hline
\small
BJD &  RV & Uncertainty & Instr.\\
 --2~400~000 &      [km~s$^{-1}$] & [km~s$^{-1}$]& \\
\hline
  54295.48408 &   22.667 & 0.017 &S\\
  54296.49214 &   23.700 & 0.015 &S\\
  54298.46418 &   23.341 & 0.026 &S\\
  54298.48626 &   23.285 & 0.027 &S\\
  54298.58797 &   23.023 & 0.030 &S\\
  54303.44629 &   23.706 & 0.048 &S\\
  54304.51991 &   23.005 & 0.063 &S\\
  54308.55172 &   23.820 & 0.019 &S\\
  54309.53356 &   22.585 & 0.020 &S\\
  54313.45013 &   23.461 & 0.019 &S\\
  54314.44185 &   22.684 & 0.027 &S\\
  54329.67560 &  23.665 & 0.045 &C\\
  54330.66442 &  22.842 & 0.039 &C\\
  54378.56018 &  23.339 & 0.032 &C\\
  54345.52251 &  23.371 & 0.020 &H\\
  54345.52981 &  23.371 & 0.019 &H\\
  54345.53713 &  23.392 & 0.018 &H\\
  54345.54444 &  23.360 & 0.018 &H\\
  54345.55176 &  23.347 & 0.019 &H\\
  54345.65632 &  23.107 & 0.019 &H\\
  54345.66364 &  23.090 & 0.019 &H\\
  54345.67095 &  23.034 & 0.020 &H\\
  54346.53194 &  23.267 & 0.021 &H\\
  54347.57772 &  22.847 & 0.011 &H\\
  54348.63260 &  23.811 & 0.011 &H\\
  54349.66605 &  22.813 & 0.012 &H\\
\hline
\end{tabular}
\end{table}