\begin{table}%t1
\par
\caption {\label{tab_obs}Properties of our targets and summary of the results of our KI observations on 15 May 2009 (UT).}
%\centerline
 {\begin{tabular}{lllccccccccccccc}
\hline\hline
\noalign{\smallskip}
Name   & $z^a$  & Scale$^b$      & $E_{B-V}$$^c$ & $B_{p}$$^d$ & PA & $V^2$$^e$& \multicolumn{2}{c}{$\Rring$$^f$}  & $\Rlag$$^g$   & $A_{V}$   \\ 
\cline{8-9}
       & corr.& (pc mas$^{-1}$)  &  (mag)  & (m)   & (\degr)   &             & (mas)        & (pc)         & (pc)     & (mag) \\
\hline
NGC~4151        & 0.00414 & 0.086 & 0.028 & 85.0 & 12.3 & 0.862~$\pm$~0.018 & 0.45~$\pm$~0.04 & 0.039~$\pm$~0.003 & $\sim$0.044~$\pm$~0.011 & \\ 
NGC~4051        & 0.00309 & 0.064 & 0.013 & 79.4 & 41.9 & 0.861~$\pm$~0.026 & 0.51~$\pm$~0.05 & 0.032~$\pm$~0.003 & $\sim$0.011~$\pm$~0.004 & \\
MRK231         & 0.0427  & 0.84  & 0.010 & 74.4 & 44.3 & 0.923~$\pm$~0.028 & 0.38~$\pm$~0.07 & 0.32~$\pm$~0.06   &                       & 1.3$^h$\\
IRAS~13349+2438 & 0.109   & 2.0   & 0.012 & 85.0 & 34.5 & 0.869~$\pm$~0.016 & 0.44~$\pm$~0.03 & 0.88~$\pm$~0.05   &                       & 0.93$^i$\\
\hline
\end{tabular}}
\par
\smallskip
$^a$ CMB corrected value from NED. 
$^b$ $H_0=70$ km s$^{-1}$ Mpc$^{-1}$, $\Omega_{\rm m}=0.3$, and $\Omega_{\Lambda}=0.7$.
$^c$ Galactic reddening from \cite{Schlegel98}. $^d$ Projected baseline lengths. 
$^e$ For objects with multiple measurements, $V^2$ data shown are at
the longest baseline length, except for NGC~4051 where the one with a
smaller error is shown. $^f$ Thin-ring radius (best-fit values if multiple data are available). 
$^g$ Mean and standard deviation of the reverberation measurements
from 2001 to 2006 by \cite{Koshida09} for NGC~4151, and from 2001 to
2003 by \cite{Suganuma06} for NGC~4051.
% Minezaki et al. 0.040 pc for NGC4151
% Suganuma et al. 0.009 - 0.015 pc for NGC4051
$^h$~\cite{Lacy82}.
$^i$ \cite{Wills92}.
\par
\end{table}