Ecco un esempio minimo e compilabile:
`
\documentclass[a4paper,12pt,a4paper,italian,openright,titlepage]{scrreprt}
\usepackage[latin1]{inputenc}
\usepackage[italian]{babel}
\usepackage{float}
\usepackage{amsfonts}
\usepackage{nextpage}
\usepackage{booktabs}%package per le tabelle che sostituisce hline
\usepackage{classicthesis-ldpkg}
\usepackage[pdfspacing]{classicthesis}
\usepackage[italian]{arsclassica}
\usepackage[swapnames,norules]{frontespizio}
\captionsetup{font=small,format=hang}%stile per le didascalie
\graphicspath{{images}}
\hypersetup{colorlinks=true,linkcolor=blue,citecolor=magenta}
\newcommand{\otoprule}{\midrule[\heavyrulewidth]}%per le tabelle
\begin{document}
\begin{figure}
\centering
\footnotesize
\begin{tabular}{cccccccccc}
\toprule
Organismo & File & File &Bit& \multicolumn{3}{|c}{Huff(G(File))} & \multicolumn{3}{|c}{Huff(MTF(BWT(G(File))))} \\
& & ACTG & & \multicolumn{1}{|c}{Bit} & MB & bpc & \multicolumn{1}{|c}{Bit} & MB & bpc\\
\midrule
H1N1 Polymerase PA & 2,21 KB & 2,10 KB & 4308 &4029&5,619&4213&4213&5,867\\
\bottomrule
\end{tabular}
\end{figure}
\end{document}
`