\begin{table}%t2
  \caption {\label{tab:results}Error prediction for various experimental designs, assumptions about foregrounds, and fiducial $r$~values.}
  $$
  \begin{array}{lc|ccc|ccc|ccc|c|cccc}
    \hline
    \hline
    & & \multicolumn{3}{c|}{{\rm Noise-only}^{a}} & \multicolumn{3}{c|}{{\rm Known~foregrounds}^{b}} & \multicolumn{4}{c|}{{\rm \smica}^{c}} & \\
    {\rm Case} & r & \sigma_r/r & \sigma_r^{\ell \leq 20}/r & \sigma_r^{\ell > 20}/r & \sigma_r/r & \sigma_r^{\ell \leq 20}/r & \sigma_r^{\ell > 20}/r & \sigma_r/r & \sigma_r^{\ell \leq 20}/r & \sigma_r^{\ell > 20}/r & {r_{\rm est}}^{d} & l_{\rm min} - l_{\rm max} & \fsky & D^{e} \\
    \hline
    \multirow{2}{*}{\footnotesize PLANCK} & 0.3 & 0.075 & 0.17 & 0.084 & 0.1 & 0.2 & 0.12 & 0.15 & 0.22 & 0.2 & \mathbf{0.26} & \multirow{2}{*}{2 - 130} & \multirow{2}{*}{0.95} & \multirow{2}{*}{3} \\
    & 0.1 & 0.17 & 0.25 & 0.22 & 0.23 & 0.34 & 0.32 & 0.29 & 0.34 & 0.55 & 0.086 & \\
\par
     \multirow{2}{*}{\footnotesize EPIC-LC} 
     & 0.01 & 0.019 & 0.084 & 0.019 & 0.05 & 0.18 & 0.053 & 0.079 & 0.18 & 0.1 & \mathbf{0.0098} & \multirow{2}{*}{2--130} & \multirow{2}{*}{0.86} & \multirow{2}{*}{4} \\
     & 0.001 & 0.059 & 0.15 & 0.064 & 0.27 & 0.4 & 0.38 & 0.37 & 0.43 & 0.82 & 0.00088 & \\
\par
     \multirow{2}{*}{\footnotesize EPIC-2m} 
     & 0.01 & 0.016 & 0.083 & 0.016 & 0.027 & 0.12 & 0.027 & 0.032 & 0.11 & 0.036 & \mathbf{0.0096} & \multirow{2}{*}{2--300} & \multirow{2}{*}{0.87} & \multirow{2}{*}{4} \\
     & 0.001 & 0.051 & 0.14 & 0.055 & 0.14 & 0.25 & 0.16 & 0.16 & 0.24 & 0.24 & \mathbf{0.001} & \\
\par
     \multirow{2}{*}{\footnotesize EPIC-CS} 
     & 0.01 & 0.017 & 0.084 & 0.017 & 0.029 & 0.12 & 0.03 & 0.036 & 0.11 & 0.041 & \mathbf{0.0096} & \multirow{2}{*}{2--300} & \multirow{2}{*}{0.87} & \multirow{2}{*}{4} \\
     & 0.001 & 0.058 & 0.15 & 0.063 & 0.15 & 0.27 & 0.19 & 0.18 & 0.26 & 0.29 & \mathbf{0.00098} & \\
     \multirow{2}{*}{\footnotesize Ground-based}
     & 0.1 & 0.083 & - & - & 0.15 & - & - & 0.24 & - & - & \mathbf{0.11} & \multirow{2}{*}{50--300} & \multirow{2}{*}{0.01} & \multirow{2}{*}{2} \\
     & 0.01 & 0.18 & - & - & 0.8 & - & - & 1.6 & - & - & 0.018 & \\
\par
     {\rm \footnotesize Grnd-based+Planck} 
     & 0.01 & 0.18 & - & - & 0.51 & - & - & 0.69 & - & - & 0.0065 & \multirow{1}{*}{50--300} & \multirow{1}{*}{0.01} & \multirow{1}{*}{2} \\
\par
     {\rm \footnotesize Deep~field~mission} 
     & 0.001 & 0.082 & - & - & 0.1 & - & - & 0.13 & - & - & \mathbf{0.00092} & 
     \multirow{1}{*}{50--300} & \multirow{1}{*}{0.01} & \multirow{1}{*}{4} \\
     \hline
\par
  \end{array}
  $$
\par
  \smallskip
    $^{{a}}$ Error bars derived assuming no foreground contamination i.e. using $\Rcont = \tens{R}^{\rm noise}$ (see Eq.~(\ref{eq:roughsigma})).
  $^{{b}}$  Same as $^{{a}}$ but assuming perfectly known foreground contamination i.e. using $\Rcont = \tens{R}^{\rm noise} + \tens{R}^{\rm fg}$.
   $^{{c}}$ Error bars obtained by the inversion of the FIM computed from the \smica\ model at the point of convergence of the algorithm (see Eq.~(\ref{eq:errorsmica})).
   $^{{d}}$  Estimated value at the convergence point in \smica; detections at more than $4\sigma$ are bold-faced.
   $^{{e}}$ Size of the galactic component used in the model of \smica.
\par
\end{table}