\begin{table}%t1
\caption{Parameters of selected magnetic liquid mirrors. The currents assume conducting wires only, without
ferromagnetic materials. Adding ferromagnetic materials would greatly reduce them. See Sect.~4 for more
details. Negative currents signify that they flow in the opposite direction.} \label{tab:results}
%\centering
\par
\begin{tabular}{lrcr}
\hline \hline
Coil     &  Radius [m]    & Vertical position [m] & Current [A]  \\
\hline
\multicolumn{4}{c}{15 m  -- rms of 1.07 $\mu$m} \\
\hline
   1  & 9.2430  &    --0.9869  &   --60.8489  \\
   2  &11.1991  &    --1.7295  &  3210.2405  \\
   3  &11.8384  &    --1.8845  & --4517.1615  \\
\hline
\multicolumn{4}{c}{15 m  -- rms of 1.30 $\mu$m} \\
\hline
   1  & 1.4027  &    --1.4935  &   587.6861  \\
   2  &13.5234  &    --3.0000  &     5.6294  \\
   3  &20.5413  &    --0.8596  &  --254.2787  \\
\hline
\multicolumn{4}{c}{30 m  -- rms of 2.63 $\mu$m} \\
\hline
   1  & 1.4027  &    --1.4935  &   587.6861  \\
   2  &13.5234  &    --3.0000  &     5.6294  \\
   3  &20.5413  &    --0.8596  &  --254.2787  \\
   4  &24.9964  &    --2.6172  &  2609.0372  \\
\hline
\multicolumn{4}{c}{30 m  -- rms of 2.30 $\mu$m} \\
\hline
   1  & 3.1454  &    --0.7702  &   218.7493  \\
   2  & 7.0715  &    --2.2410  &     8.8194  \\
   3  &19.1545  &    --1.7598  &  --250.6070  \\
   4  &23.3406  &    --1.4783  &  2712.0174  \\
   5  &23.6960  &    --2.7404  &  2351.2623  \\
   6  &23.8176  &    --1.1426  & --2777.9831  \\
\hline
\multicolumn{4}{c}{44 m  -- rms of 26.5 $\mu$m} \\
\hline
   1  & 3.7000  &    --1.5790  & --3890.4473  \\
   2  & 9.0013  &    --0.3239  &    25.8519  \\
   3  &19.8010  &    --0.9940  &    12.4942  \\
   4  &23.3694  &    --1.3554  &  1292.1601  \\
   5  &25.1110  &    --1.9588  & --4991.2727  \\
   6  &30.0000  &    --0.6990 &   2963.7625 \\
\hline
\end{tabular}
\end{table}