\documentclass[a4paper,10pt]{article} 
\begin{document} 
\begin{table}[H!] 
\centering 
\begin{tabular}{|c|c|c|c|} 
\hline 
  & iters & max-cos & cpu-sec \\ 
\hline 
m,k,r=: 15  10  11 & 16 & 9.126114e-01 & 1.245000e+01 \\ 
\hline 
m,k,r=: 15  10   9 & 111 & 9.530032e-01 & 7.761000e+01 \\ 
\hline 
m,k,r=: 15  11  11 & 21 & 9.240702e-01 & 1.604000e+01 \\ 
\hline 
m,k,r=: 15  11   9 & 300 & 9.695571e-01 & 2.039700e+02 \\ 
\hline 
m,k,r=: 16  10  11 & 16 & 9.095042e-01 & 16 \\ 
\hline 
m,k,r=: 16  10   9 & 36 & 9.428787e-01 & 3.366000e+01 \\ 
\hline 
m,k,r=: 16  11  11 & 21 & 9.240677e-01 & 2.018000e+01 \\ 
\hline 
m,k,r=: 16  11   9 & 219 & 9.564624e-01 & 1.907400e+02 \\ 
\hline 
m,k,r=: 17  10  11 & 17 & 9.058094e-01 & 2.138000e+01 \\ 
\hline 
m,k,r=: 17  10   9 & 39 & 9.461365e-01 & 4.525000e+01 \\ 
\hline 
m,k,r=: 17  11  11 & 20 & 9.203602e-01 & 2.423000e+01 \\ 
\hline 
m,k,r=: 17  11   9 & 240 & 9.593214e-01 & 2.628100e+02 \\ 
\hline 
m,k,r=: 18  10  11 & 21 & 9.249664e-01 & 3.021000e+01 \\ 
\hline 
m,k,r=: 18  10   9 & 31 & 9.401575e-01 & 4.370000e+01 \\ 
\hline 
m,k,r=: 18  11  11 & 25 & 9.311729e-01 & 3.537000e+01 \\ 
\hline 
m,k,r=: 18  11   9 & 208 & 9.510410e-01 & 2.754100e+02 \\ 
\hline 
\end{tabular} 
\caption{Using DR algorithm; with [toler iterlimit]= [1e-14           3500]} 
\label{table:table:maxitermaxrankP} 
\end{table} 
\end{document}