This measurement can be performed in a very similar manner with the data at $\sqrt{s} = 240$ GeV, albeit with a reduced discrimination between the HZ and the WW fusion contributions. The statistical precision with which $\sigma_{{\rm WW \to H}} \times {\rm BR(H \to b\bar b)}$ can be measured at both centre-of-mass energies is displayed in Table~\ref{tab:WWFusion}. 

\begin{table}
\begin{center}
\caption{Statistical precision of the TLEP measurement of  $\sigma_{{\rm WW \to H}} \times {\rm BR(H \to b\bar b)}$. For illustration, the ILC potential at the same centre-of-mass energies is also indicated.\label{tab:WWFusion}}
\begin{tabular}{|r|r|r|}
\hline $\sqrt{s}$ (GeV) & TLEP & ILC \\ \hline
\hline 240 - 250  & {\bf 2.2\%} & 10.5\% \\
\hline 350   & {\bf 0.6\%} & 1.0\% \\ \hline 
\end{tabular} 
\end{center}
\end{table}
These measurements can also be used to determine the total Higgs decay width in a way similar to that described in the previous section. Indeed, the total Higgs boson width is given by $\Gamma_{\rm tot} = \Gamma {\rm(H \to WW)}/{\rm BR(H \to WW)}$. The partial decay width $\Gamma{\rm(H \to WW)}$ is directly proportional to the inclusive cross section $\sigma_{\rm WW \to H}$. The Higgs boson branching ratios to WW and to ${\rm b\bar b}$ are in turn obtained from the measurements performed at $\sqrt{s} = 240$ GeV, the precision of which can be inferred from Table~\ref{tab:HiggsBranching}. With the 350 (240) GeV data, TLEP is therefore able to determine the Higgs boson decay width with a precision of the order of 1.2\% (2.4\%) with WW fusion. When combined with the ZZZ final state, the precision on the total Higgs boson width from TLEP is estimated to be 1.0\%. These numbers are summarized in Table~\ref{tab:Width}.
\begin{table}
\begin{center}
\caption{Statistical precision of the total Higgs boson width measurements with TLEP at $\sqrt{s}=$ 240 and 350 GeV. For illustration, the ILC potential at the same centre-of-mass energies is also indicated.\label{tab:Width}}
\begin{tabular}{|r|r|r|}
\hline Process and final state & TLEP & ILC \\ \hline
\hline $\epemto {\rm HZ}$ with ${\rm H \to ZZ}$ & {\bf 3.1\%} & 20\% \\
\hline ${\rm WW \to H}$ with ${\rm H \to b\bar b}$ at 240 GeV  & {\bf 2.4\%} & 12\% \\
\hline ${\rm WW \to H}$ with ${\rm H \to b\bar b}$ at 350 GeV  & {\bf 1.2\%} & 7\% \\ \hline
\hline {\bf Combined} & {\bf 1.0\%} & 6.0\% \\ \hline 
\end{tabular} 
\end{center}
\end{table}
