\begin{table}%t1
\caption{\label{table:tab1}Summary of error analysis methods.}
\par
\small%\centerline
 {
\begin{tabular}{r l c l r}
\hline\hline
Nu.& Method & Equation & Notation & Figure \\
\hline
&&&& \\[-8pt]
 1 & EP + Tikhonov                   & \ref{eq21}    & $\dd f_{\rm Tikh}/f_{\rm alg}$  & \ref{fig:abssigrathtkh}  \\
 2 & EP + SVD                        & \ref{eq24}    & $\dd f_{\rm svd}/f_{\rm alg}$   & \ref{fig:abssigrathtkh} \\ 
 3 & EP + MV, algebraic              & \ref{eq32}, \ref{eq09} & $\dd f_{\rm alg}/f_{\rm alg}$&\ref{fig:abssigrathterin}\\ 
 4 & EP + MV, optimization           & \ref{eq32}, \ref{eq11} & $\dd f_{\rm opt}/f_{\rm opt}$&\ref{fig:abssigrathterin}\\ 
 5 & EP + MC($\dd z$)                & \ref{eq24}, \ref{eq51} & $\dd f_{z}/f_{z-{\rm alg}}$&\ref{fig:VECnFDF}  \\ 
 6 & EP + MC($\dd {\bf A}$)          & \ref{eq24}, \ref{eq51} & $\dd f_{A}/f_{A-{\rm alg}}$&\ref{fig:VECnFDF}  \\ 
 7 & EP + MC($\dd z, \dd {\bf A}$)   & \ref{eq24}, \ref{eq51} & $\dd f_{zA}/f_{zA-{\rm alg}}$ &\ref{fig:VECnFDF} \\ 
 8 & EE + $\dd z$                    & \ref{eq40}    & $\dd f_{z}/f_{\rm alg}$     &\ref{fig:abssirathtzer}\\
 9 & EE + $\dd {\bf A}$              & \ref{eq56}    & $\dd f_{A}/f_{\rm alg}$     &\ref{fig:abssirathtzer}\\
10 & EE + $\dd z + \dd {\bf A}$      & \ref{eq46}    & $\dd f_{zA}/f_{\rm alg}$    &\ref{fig:abssirathtzer}\\
11 & MC($\dd z$), alg                & \ref{eq51}    & $\dd f_{z}/f_{z-{\rm alg}}$   &\ref{fig:sigralgmc} \\
12 & MC($\dd {\bf A}$), alg.         & \ref{eq51}    & $\dd f_{A}/f_{A-{\rm alg}}$   &\ref{fig:sigralgmc} \\
13 & MC($\dd z,\dd {\bf A}$), alg.   & \ref{eq51}    & $\dd f_{zA}/f_{zA-{\rm alg}}$ &\ref{fig:sigralgmc} \\
14 & MC($\dd z$), opt                & \ref{eq52}, \ref{eq53} & $\dd f_{z}/f_{z-{\rm opt}}$   & \ref{fig:sigroptmc} \\
15 & MC($\dd {\bf A}$), opt.         & \ref{eq52}, \ref{eq53} & $\dd f_{A}/f_{A-{\rm opt}}$   & \ref{fig:sigroptmc} \\ 
16 & MC($\dd z,\dd {\bf A}$), opt.   & \ref{eq52}, \ref{eq53} & $\dd f_{zA}/f_{zA-{\rm opt}}$ & \ref{fig:sigroptmc} \\
17 & ML + fmincon                    & \ref{eq37}    & $\dd f_{\rm fmincon}/f_{\rm opt}$  & \ref{fig:abssigrathes}  \\
18 & ML + lscov                      &       & $\dd f_{\rm lscov}/f_{\rm opt}$    & \ref{fig:abssigrathes}  \\ 
&&&& \\[-8pt]
\hline
\end{tabular}}
\medskip
Here we use the following designations: EP-error propagation, \mbox{EE-error} estimation, MC-Monte~Carlo, MV-minimum variance methods and ML-MATLAB functions.
\end{table}