\begin{table}%t9
\par
         \caption{\label{tab:white_noise_before_after_compression}Impact of quantisation and compression on white noise sensitivity.
         }
          %\centerline
 {            \begin{tabular}{ c  c c c  c c c  c c c  c c c }
               \hline
               \hline
			      &	&\textbf{M-00}	&	&	&\textbf{M-01}	&	&	&\textbf{S-10}	&	&	&\textbf{S-11}	&\\
         \cline{2-13}
    	 &$\sigma$\tablefootmark{1}	&$\sigma_q$\tablefootmark{2}	&$\Delta$\tablefootmark{3}	
         &$\sigma$	&$\sigma_q$	&$\Delta$	
         &$\sigma$	&$\sigma_q$	&$\Delta$	
         &$\sigma$	&$\sigma_q$	&$\Delta$	\\
           \hline
	       \textbf{70 GHz} & & &  &  &  &  & & &  &  &  & \\
           LFI18	&$\ldots$	&$\ldots$	&$\ldots$	&$\ldots$	&$\ldots$	&$\ldots$	&38.93	&39.22	&0.74\%	&31.07	&31.39	&1.02\%\\
	       LFI19	&33.50	&33.68	&0.55\%	&34.00	&34.13	&0.39\%	&25.68	&25.85	&0.63\%	&27.48	&27.67	&0.71\%\\
	       LFI20	&31.08	&31.17	&0.31\%	&31.20	&31.37	&0.54\%	&44.77	&45.14	&0.83\%	&41.95	&42.23	&0.67\%\\
	       LFI21	&33.77	&33.94	&0.51\%	&32.27	&32.39	&0.35\%	&26.50	&26.67	&0.62\%	&25.63	&25.86	&0.87\%\\
	       LFI22	&17.03	&17.15	&0.67\%	&19.29	&19.41	&0.61\%	&20.99	&21.05	&0.28\%	&23.94	&24.06	&0.49\%\\
	       LFI23	&37.84	&38.01	&0.44\%	&41.00	&41.25	&0.61\%	&23.76	&24.01	&1.04\%	&12.15	&12.19	&0.36\%\\
           \hline   
           \textbf{44 GHz} & & &  &  &  &  & & &  &  &  & \\
	       LFI24	&$\ldots$	&$\ldots$	&$\ldots$	&$\ldots$	&$\ldots$	&$\ldots$	&5.95	&5.97	&0.25\%	&5.32	&5.35	&0.45\%\\
	       LFI25	&7.50	&7.54	&0.50\%	&7.53	&7.55	&0.30\%	&9.34	&9.37	&0.35\%	&6.93	&6.96	&0.43\%\\
	       LFI26\tablefootmark{4}	&6.04	&6.06	&0.32\%	&6.18	&6.20	&0.31\%	&8.81	&8.84	&0.28\%	&$\ldots$
&$\ldots$	&$\ldots$	\\
           \hline   
           \textbf{30 GHz} & & &  &  &  &  & & &  &  &  & \\
           LFI27	&62.34	&62.67	&0.52\%	&65.62	&65.97	&0.53\%	&56.19	&56.40	&0.37\%	&52.48	&52.59	&0.22\%\\
	       LFI28	&52.96	&53.27	&0.59\%	&68.34	&68.58	&0.34\%	&46.77	&46.94	&0.35\%	&44.15	&44.24	&0.20\%\\
               \hline
            \end{tabular}}
\par
                 \tablefoot { \tablefoottext{1}{White noise sensitivity before quantisation and compression in $\mu {\rm V}/\sqrt{\rm Hz}$.}
                \tablefoottext{2}{White noise sensitivity after quantisation and compression in $\mu  {\rm V}/\sqrt{\rm Hz}$.}
                \tablefoottext{3}{Percent relative difference: $\Delta = 100\times (\sigma_q-\sigma)/\sigma$.}
                \tablefoottext{4}{No values are given for \texttt{LFI26S-11}, for which quantisation and compression parameters
were set to incorrect values because of a problem in the software optimisation procedure that was identified and solved
after the calibration campaign.}}
\par
      \vspace{-2mm}\end{table}