\begin{table}%t1
\caption{South Pole seeing as measured by the A-DIMM in 2001 at
a wavelength of 500~nm. It is compared to other seeing measurements
done at the South Pole. All values are in arcseconds.}
\par
%\centering
\par
\begin{tabular}{llllllll}
\hline  \hline
Instrument & Sample size (days) & Mean & Std. Dev. & Median & Best 25\% & Best & Worst \\
\hline
  A-DIMM (This work)& 101 & 1.90 & 0.60 & 1.82 & 1.43 & 0.46 & 3.72 \\
  SODAR (Travouillon et~al. \cite{Travouillon2003})& 269 & 1.73 & 1.07 & 1.59 & 1.17 & $<$0.3 & 8.11 \\
  Microthermals (Marks et~al. \cite{Marks1999}) & 16 & 1.86 & 0.75 & 1.6 & 1.0 & 0.8 & 3.1 \\
  H-DIMM (Loewenstein et~al. \cite{Loewenstein1998})& 28 & 1.53 & -- & 1.64 & -- & 0.6 & 6.2 \\
\hline
\end{tabular}
\label{stat}
\end{table}