\begin{table}
\scriptsize
\caption{Number of learning iterations and consumed time}
\label{tab:Fce-error}
\setlength{\tabcolsep}{1.7pt}\centering

  \subfloat[sinc]{
  \begin{tabular}{l|c|c|c|c|c|c||>{\bfseries}c}
  \hline
  & $\eta_1$ & $\eta_2$ & $\eta_3$ & $\eta_4$ & $\eta_5$ & $\eta_6$ & $\Sigma$\\
  \hline
  Orig33    &  210 &  159 &   65 &   39 &   16 &   11 &   500\\
  $10^{-3}$ & 4.72 & 3.43 & 1.47 & 0.90 & 0.42 & 0.41 & 11.34\\
  \hline
  Mod33     &  134 &   92 &   29 &   17 &    7 &   5  &   284\\
  $10^{-3}$ & 3.03 & 2.06 & 0.65 & 0.38 & 0.17 & 0.12 &  6.42\\
  \hline
  Orig33    &  266 &  212 &  103 &   66 &   37 &   41 &   725\\
  $10^{-4}$ & 6.48 & 4.59 & 2.28 & 1.46 & 0.86 & 1.04 & 16.71\\
  \hline
  Mod33     &  184 &  135 &   51 &   38 &   50 &   28 &   486\\
  $10^{-4}$ & 4.11 & 2.96 & 1.14 & 0.86 & 1.12 & 0.62 & 10.79\\
  \hline
  \end{tabular}
  \label{tab:fce-sinc}
  }%
  \subfloat[f]{
  \begin{tabular}{l|c|c|c|c|c|c||>{\bfseries}c}
  \hline
  & $\eta_1$ & $\eta_2$ & $\eta_3$ & $\eta_4$ & $\eta_5$ & $\eta_6$ & $\Sigma$\\
  \hline
  Orig33          &  292 &  237 &  122 &   82 &   38 &   26 &   797\\
  $4\cdot10^{-3}$ & 6.98 & 5.51 & 2.85 & 1.88 & 0.94 & 0.84 & 19.00\\
  \hline
  Mod33           &  208 &  158 &   64 &   39 &   17 &   11 &   497\\
  $4\cdot10^{-3}$ & 4.94 & 3.65 & 1.50 & 0.92 & 0.41 & 0.26 & 11.68\\
  \hline
  \multicolumn{1}{c}{}\\[1ex]
  \multicolumn{1}{c}{}\\
  \multicolumn{1}{c}{}\\
  \multicolumn{1}{c}{}\\
  \end{tabular}
  \label{tab:fce-f}
  }

  \subfloat[sincm]{
  \begin{tabular}{l|c|c|c|c|c|c||>{\bfseries}c}
  \hline
  & $\eta_1$ & $\eta_2$ & $\eta_3$ & $\eta_4$ & $\eta_5$ & $\eta_6$ & $\Sigma$\\
  \hline
  Orig33          &   177 &  129 &   47 &   28 &   11 &    7 &   399\\
  $5\cdot10^{-2}$ &  4.09 & 2.81 & 1.15 & 0.67 & 0.32 & 0.25 &  9.30\\
  \hline
  Orig44          &   254 &  201 &  103 &   81 &   63 &   65 &   767\\
  $2\cdot10^{-4}$ & 12.64 & 9.36 & 4.74 & 3.69 & 2.87 & 2.99 & 36.29\\
  \hline
  Mod43           &   192 &  143 &   83 &   87 &   99 &  115 &   719\\
  $2\cdot10^{-4}$ &  6.51 & 4.79 & 2.76 & 2.87 & 3.32 & 3.89 & 24.15\\
  \hline
  \multicolumn{1}{c}{}\\
  \multicolumn{1}{c}{}\\
  \end{tabular}
  \label{tab:fce-sincm}
  }%
  \subfloat[fm]{
  \begin{tabular}{l|c|c|c|c|c|c||>{\bfseries}c}
  \hline
  & $\eta_1$ & $\eta_2$ & $\eta_3$ & $\eta_4$ & $\eta_5$ & $\eta_6$ & $\Sigma$\\
  \hline
  Orig33          &  251 &  198 &   91 &   58 &   25 &   16 &   639\\
  $5\cdot10^{-2}$ & 5.79 & 4.24 & 2.02 & 1.38 & 0.61 & 0.53 & 14.58\\
  \hline
  Mod34           &  168 &  121 &   43 &   25 &   10 &    7 &   374\\
  $2\cdot10^{-4}$ & 5.49 & 3.95 & 1.42 & 0.86 & 0.36 & 0.26 & 12.33\\
  \hline
  Orig44          &  203 &  153 &   61 &   37 &   15 &   10 &   479\\
  $2\cdot10^{-4}$ & 9.83 & 6.88 & 2.75 & 1.67 & 0.71 & 0.48 & 22.31\\
  \hline
  Mod43           &  221 &  169 &   72 &   45 &   21 &   14 &   542\\
  $2\cdot10^{-4}$ & 7.20 & 6.25 & 2.37 & 1.46 & 0.69 & 0.48 & 18.45\\
  \hline
  \end{tabular}
  \label{tab:fce-fm}
  }

\end{table}