\begin{table}%t3
%\centering
\par
\caption{Spectroscopic MK standard stars. The spectral types are listed in column 
"sp. type''. References for the spectral types are given in column "ref.'': 1~=~Yamashita et~al.
(\cite{Yamashitaetal76}),
2~=~Gray et~al. (\cite{Grayetal01}), 3~=~Keenan \& Barnbaum (\cite{KeenanBarnbaum99}),
4~=~Garcia (\cite{Garcia89}), 5~=~Keenan \& McNeil (\cite{KeenanMcNeil89}), 6~=~Prugniel \& Soubiran  
(\cite{PrugnielSoubiran01}).
\label{specstd}} 
\begin{tabular}{llllll} 
\noalign{\smallskip}     
\hline 
\hline 
\noalign{\smallskip}    
Star       &  Sp. type & Ref. & Star       &  Sp. type & Ref.\\
\hline 
\noalign{\smallskip}    
\object{HD~222368} & F7V    &   4 & \object{HD~188119} & G7III  &   4  \\
\object{HD~016765} & F7IV   &   6 & \object{HD~010700} & G8V    &   4  \\
\object{HD~216385} & F7IV   &   6 & \object{HD~188512} & G8IV   &   4  \\
\object{HD~181214} & F8III  &   6 & \object{HD~027348} & G8III  &   3  \\
\object{HD~004614} & G0V    &   4 & \object{HD~175306} & G9III  &   4  \\
\object{HD~013974} & G0V    &   4 & \object{HD~145675} & K0V    &   5  \\
\object{HD~019373} & G0V    &   4 & \object{HD~185144} & K0V    &   4  \\
\object{HD~114710} & G0V    &   1 & \object{HD~198149} & K0IV   &   5  \\
\object{HD~150680} & G0IV   &   4 & \object{HD~048433} & K0III  &   3  \\
\object{HD~039833} & G0III  &   6 & \object{HD~010476} & K1V    &   5  \\
\object{HD~204867} & G0Ib   &   1 & \object{HD~222404} & K1IV   &   5  \\
\object{HD~204613} & G1III  &   4 & \object{HD~096833} & K1III  &   5  \\
\object{HD~185758} & G1II   &   4 & \object{HD~022049} & K2V    &   4  \\
\object{HD~186408} & G2V    &   4 & \object{HD~137759} & K2III  &   4  \\
\object{HD~126868} & G2IV   &   2 & \object{HD~020468} & K2II   &   4  \\
\object{HD~209750} & G2Ib   &   1 & \object{HD~219134} & K3V    &   4  \\
\object{HD~117176} & G4V    &   5 & \object{HD~003712} & K3III  &   3  \\
\object{HD~127243} & G4IV   &   5 & \object{HD~201091} & K5V    &   4  \\
\object{HD~186427} & G5V    &   1 & \object{HD~118096} & K5IV   &   6  \\
\object{HD~161797} & G5IV   &   4 & \object{HD~029139} & K5III  &   3  \\
\object{HD~027022} & G5IIb  &   5 & \object{HD~088230} & K6V    &   4  \\
\object{HD~206859} & G5Ib   &   1 & \object{HD~201092} & K7V    &   4  \\
\object{HD~003546} & G6III  &   5 & \object{HD~079210} & M0V    &   6  \\
\object{HD~182572} & G7IV   &   4 & \object{HD~046784} & M0III  &   6  \\
\hline  
\end{tabular}
\end{table}