\begin{table}%t1
%\centering
\par
\caption{{\it Top}:~specification of the spectral data. 
              {\it Bottom}:~specification of the image data. 
Abbreviations:
FF~-- Flat Field, 
{\it SNR}~-- Signal-to-Noise~Ratio.
              \label{bpp_specification_img_data}}
\begin{tabular}{lccc}
\hline
\hline
   & $\lambda=$~ 430~ nm  & $\lambda=$~ 526~ nm  & $\lambda=$~ 569~ nm \\
\hline
        Camera                & 16~bit, $512\times 512$ & 16~bit, $1024\times 1024$ & 16~bit, $1024\times 1024$ \\
        Spectral order        & 13    &  11    & 10 \\
        Range [nm]            & 430.23...430.78 & 525.93...526.92 & 568.34...569.57 \\
        Continuum wavelength [nm] & 430.41 & 526.46 & 569.2 \\
        Dispersion [pm/pixel] & 1.08  & 1.02  &  1.26   \\
        Angular scale [arcsec/pixel]
                                                    & 0.090  & 0.088 & 0.088 \\
        Mean intensity continuum [counts] & $\sim$48~750 & $\sim$19~600 & $\sim$15~200 \\
        Mean intensity line core [counts] & $\sim$10~300 & $\sim$5500& $\sim$9900  \\
        Detector noise [counts] & $\pm$8  & $\pm$18 & $\pm$2 \\
        FF rms-noise [\% of local intensity]   & 0.86 & 0.97 & 0.56 \\
        {\it SNR} continuum / line core & 75/52 & 56/38 & 72/63 \\
        Pore contrast in continuum [\%] & --27.1 & --26.8 & --24.1\\
\par
\hline
\multicolumn{2}{l}{     }    & Slit Jaw & "White light'' \\
\hline
\multicolumn{2}{l}{     Camera }               & 12~bit, $1024\times 1024$ & 10~bit, $1024\times 1024$\\
%\multicolumn{2}{l}{    }                      & 12bit, 1024x1024  & 10bit, 1024x1024 \\
\multicolumn{2}{l}{     Bandpass filter   }    & 1~ nm  at 430.5~ nm    &  10~ nm at 480~ nm   \\
\multicolumn{2}{l}{     Angular scale [arcsec/pixel] }& 0.041  & 0.039 \\
\multicolumn{2}{l}{     Mean intensity [counts] }& $\sim$15~000 & $\sim$7200 \\
\multicolumn{2}{l}{     Detector noise [counts] }& $\pm$11 & $\pm$2 \\
\multicolumn{2}{l}{     FF rms-noise [\% of local intensity]   }& 2.4 & 0.3 \\
\multicolumn{2}{l}{     {\it SNR}                      } & 31 & 65 \\
\multicolumn{2}{l}{     Pore contrast [\%] }&  & --31.5\\
\hline
\end{tabular}
\end{table}