I'm trying to create a table for my thesis. I'm quite noob in LaTeX so I will request some charity help
I already done the table in but in other format. See the attachment.

Regards
\documentclass{article}
\usepackage{booktabs,multirow}
\begin{document}
\begin{table}[htbp]
\centering
\caption{Add caption}
\begin{tabular}{ccccccccc}
\toprule
\multirow{2}[4]{*}{\textbf{Nível na albufeira (m)}} & \multirow{2}[4]{*}{\textbf{QM.FÍSICO (m3/s)}} & \multirow{2}[4]{*}{\textbf{QDIM. (m3/s)}} & \multicolumn{3}{c}{\textbf{1st order Mom. Adv}} & \multicolumn{3}{c}{\textbf{2nd order Mom. Adv}} \\
\midrule
& & & \textbf{QCFD (m3/s)} & \multicolumn{2}{c}{\textbf{Erro (\%)}} & \textbf{QCFD (m3/s)} & \multicolumn{2}{c}{\textbf{Erro (\%)}} \\
\textbf{260,4} & \textbf{100} & \textbf{88,3} & \textbf{81,9} & \textbf{-18.1} & \textbf{-7.3} & \textbf{83,3} & \textbf{-16.7} & \textbf{-5.7} \\
\textbf{262,5} & \textbf{250} & \textbf{233,1} & \textbf{223,1} & \textbf{-10.8} & \textbf{-4.3} & \textbf{224,9} & \textbf{-10} & \textbf{-3.5} \\
\textbf{267,0} & \textbf{750,0} & \textbf{708,9} & \textbf{690,3} & \textbf{-8} & \textbf{-2.6} & \textbf{696,9} & \textbf{-7.1} & \textbf{-1.7} \\
\bottomrule
\end{tabular}%
\label{tab:niveis}
\end{table}%
\end{document}
Im not getting the same output like the image attached. Any ideas?


\usepackage{amsmath}in the preamble and use$\text{Q}_{\text{M.FISICO}}$– barghest Mar 26 '13 at 14:12