\begin{table}%tD.2
\caption{$t$-parameter in the comparison of the offsets between different 
observing runs and 
other authors. A $t$-value higher
than 1.96 indicates that the offsets are significant different, which
would suggest the existence of systematic differences  between 
observing runs.}
\label{t-test.oa}
%\centering
\par
\small
\begin{tabular}{@{}lccccc@{}}
\hline\hline
 Indice    & Ref    &  Run 1&        Run 2 &       Run 3&        Run4\\
\hline
H$\delta_A$ &(C03) &  0   &                &      0.02 &        \\
H$\delta_A$ &(D05) &  0   &         1.23   &      0.38 &        \\
H$\delta_F$ &(D05) &  0   &         0.45   &      1.40 &        \\
H$\delta_F$ &(C03) &  0   &         0.33   &           &        \\
H$\gamma_A$ &(C03) &  0   &                &      0.47 &        \\
H$\gamma_A$ &(D05) &  0   &         3.84   &      1.60 &        \\
H$\gamma_F$ &(C03) &  0   &                &      0.08 &        \\
H$\gamma_F$ &(D05) &  0   &         0.21   &      1.77 &        \\
CN$_2$      &(T98) &  0   &         0.52   &      1.19 &     0.26\\
CN$_2$      &(D05) &  0   &         1.14   &      1.39 &        \\
CN$_2$      &(C03) &  0   &                &      0.29 &        \\
Ca4227      &(T98) &  0   &         1.18   &      0.50 &        0.89\\
Ca4227      &(C03) &  0   &                &      0.04 &        \\
Ca4227      &(D05) &  0   &         0.16   &      0.99 &        \\
G4300       &(T98) &  0   &         0.03   &      1.60 &        0.81\\
G4300       &(C02) &  0   &                &      0.14 &        \\
G4300       &(D05) &  0   &         0.16   &      1.29 &        \\
Fe4383      &(T98) &  0   &         0.06   &      0.30 &        0.56\\
Fe4383      &(C03) &  0   &                &      1.65 &        \\
Fe4383      &(D05) &  0   &         0.78   &      2.44 &        \\
Ca4455      &(T98) &  0   &         0.13   &      1.53 &        0.13\\
Ca4455      &(D05) &  0   &         0.44   &      0.74 &        \\
Fe4531      &(T98) &  0   &         0.13   &      0.64 &        0.36\\
Fe4531      &(D05) &  0   &         0.71   &      1.91 &        \\
C4668       &(T98) &  0   &         0.15   &      0.45 &        0.15\\
C4668       &(D05) &  0   &         0.37   &      0.33 &        \\
H$\beta$    &(T98) &  0   &         0.06   &      0.12 &        1.19\\
H$\beta$    &(K01) &  0   &                &      0.35 &        0.87\\
H$\beta$    &(C03) &  0   &                &      0.83 &        \\
H$\beta$    &(D05) &  0   &         0.73   &      1.20 &        \\
Fe5015      &(G93) &  0   &         0.86   &      0.89 &        \\
Fe5015      &(T98) &  0   &         0.41   &      0.35 &        0.96\\
Fe5015      &(C03) &  0   &                &      0.39 &        \\
Fe5015      &(D05) &  0   &         0.80   &      0.72 &        \\
\hline
Mgb         &(G93) &  0   &         0.48   &      0.74 &        \\
Mgb         &(T98) &  0   &         0.13   &      2.07 &        1.26\\
Mgb         &(K01) &  0   &                &      0.25 &        0.09\\
Mgb         &(C03) &  0   &                &      0.96 &        \\
Mgb         &(D05) &  0   &         1.96   &      0.54 &        \\
Fe5270      &(T98) &  0   &         0.38   &      1.92 &        3.25\\
Fe5270      &(C03) &  0   &                &      2.16 &        \\
Fe5270      &(D05) &  0   &         0.16   &      1.72 &        \\
Fe5335      &(T98) &  0   &         1.30   &      1.90 &        0.94\\
Fe5335      &(D05) &  0   &         0.54   &      0.20 &        \\
\hline
\end{tabular}
\end{table}