\begin{table}%T4
\caption{\label{prop}Objects properties.}
\small%\centering
\par
\begin{tabular}{lclllllll}
\hline\hline\noalign{\smallskip}
\multicolumn{1}{l}{Name} & $F_{0.1-2.4~{\rm keV}}$ & $F_{20~{\rm cm}}$ & \multicolumn{1}{c}{$V_{\rm mag}$}& \multicolumn{1}{c}{$z~^{(a)}$} &\multicolumn{1}{c}{$\alpha_{\rm oiii}^{\rm oii}$$^{(b)}$} &\multicolumn{1}{c}{Ca~H\&K break $^{(c)}$} & \multicolumn{1}{c}{$S/N$} & \multicolumn{1}{c}{$EW$ $^{(e)}$} \\
& [${\rm erg/cm^{2}/s}$] & [mJy] & & & & & &   \\
\multicolumn{1}{l}{(1)} & (2) & \multicolumn{1}{c}{(3)} & (4) & (5) & (6) & (7) & (8) & (9)\\
\hline
SHBL~J001527.9$+$353639           & 3.45E-12& 11.2& 18.2& / 	 &/        &/               &  13 & $<$5.9  \\         
SHBL~J003334.2$-$192133 $^{(d)}$  & 1.49E-11& 18.9& 16.1& 0.610? &1.04     &0               &  40 & $<$2.6  \\
SHBL~J004208.0$+$364112 $^{(d)}$  & 3.68E-12& 12  & 17.9& /	 &/        &/               &  15 & $<$5.2  \\
SHBL~J011501.9$-$340027           & 2.20E-12& 6.4 & 20.1& 0.482  &1.87     &$0.14 \pm 0.08$ &  15 & $<$3.1 \\
SHBL~J011747.0$-$244333           & 3.82E-12& 10.3& 19  & 0.279  &4.03     &$0.30 \pm 0.05$ &  30 & $<$2.7  \\
SHBL~J012657.2$+$330730           & 4.75E-12& 7.1 & 17.5& /	 &/        &/               &  12 & $<$6.5  \\
SHBL~J013632.5$+$390559 $^{(d)}$  & 2.33E-11& 60.6& 15.4& /	 &/        &/               &  12 & $<$6.4  \\
SHBL~J020412.8$-$333342           & 2.54E-12& 6.4 & 18.6& 0.617  &1.65     &$0.04 \pm 0.05$ &  27 & $<$2.9 \\
SHBL~J031633.7$-$221611           & 2.44E-12& 4.4 & 19  & 0.228  &4.63     &$0.38 \pm 0.08$ &  27 & $<$2.9 \\
SHBL~J032350.7$+$071737           & 6.69E-12& 4.5 & 20.3& /      &/        &/               &  10 & $<$7.4  \\
SHBL~J040324.5$-$242950           & 5.01e-12& 7.4 & 20.1& 0.357  &2.67     &$0.09 \pm 0.12$ &  25 & $<$3.5 \\
SHBL~J041112.2$-$394143           & 4.10E-12& 5.3 & 18.8& /	 &/        &/               &  12 & $<$6.5  \\
SHBL~J044127.4$+$150456           & 3.93E-11& 14  & 19.8& 0.109	 &4.62     &$0.44 \pm 0.28$ &   8 & $<$8.4  \\
SHBL~J044230.1$-$001830           & 4.06E-12& 4.2 & 20  & 0.449  &1.51     &$0.08 \pm 0.06$ &  17 & $<$4.1 \\
SHBL~J050335.3$-$111507           & 1.29E-11& 10.5& 17.9& /      &/        &/               &   9 & $<$8.1 \\   
SHBL~J050939.8$-$251403           & 2.13e-12& 4.5 & 20  & 0.264  &1.95     &$0.07 \pm 0.06$ &  30 & $<$2.7 \\
SHBL~J060714.3$-$251859           & 4.13E-12& 12.2& 18.9& 0.275  &2.70     &$0.13 \pm 0.04$ &  28 & $<$2.9 \\
SHBL~J062149.6$-$341149           & 4.47E-12& 8.8 & 18.7& 0.529  &0.86     &$0.02 \pm 0.04$ &  31 & $<$2.5\\
SHBL~J075124.9$+$173051           & 3.85E-12& 10.5& 17.4& 0.185  &?        &?               &  21 & $<$3.6\\
SHBL~J075324.6$+$292132           & 2.78E-12& 4.3 & 18.7& 0.161  &5.71     &$0.44 \pm 0.14$ &  21 & $<$3.5\\
SHBL~J092401.1$+$053345 $^{(d)}$  & 5.15E-12& 7.6 & 18.4& /	 &/        &/               &  12 & $<$6.5  \\
SHBL~J094355.5$-$070951           & 2.88E-12& 7.3 & 19.9& 0.433  &2.90     &$0.19 \pm 0.06$ &  22 & $<$3.1 \\
SHBL~J095224.0$+$750213           & 4.83E-12& 12.4& 17.2& 0.179  &?        &?               &  21 & $<$3.5 \\
SHBL~J095805.9$-$031740           & 2.82E-12& 7.6 & 19.6& /	 &/        &/               &  10 & $<$7.6\\
SHBL~J101015.9$-$311908           & 2.83E-11& 74.4& 17.3& 0.143  &1.61     &0               &  41 & $<$1.8 \\
SHBL~J102243.8$-$011302 $^{(d)}$  & 1.31E-11& 36.3& 17.2& /	 &/        &/               &  15 & $<$5.0 \\
SHBL~J104651.4$-$253545           & 4.53E-12& 14.3& 19.2& 0.254  &2.27     &$0.08 \pm 0.05$ &  35 & $<$2.3\\
SHBL~J111939.5$-$304720           & 3.72E-12& 9.6 & 19.5& 0.412  &2.11     &$0.08 \pm 0.05$ &  21 & $<$3.2\\
SHBL~J113444.5$-$172902           & 3.64E-12& 5.0 & 19.7& 0.571  &1.81     &$0.02 \pm 0.05$ &  30 & $<$2.5\\
SHBL~J113755.4$-$171042           & 4.72E-12& 5.3 & 18.9& 0.600  &0.66     &0               &  27 & $<$2.9\\
SHBL~J114535.1$-$034001           & 7.96E-12& 19.7& 18.4& 0.167  &3.73     &$0.28 \pm 0.12$ &  13 & $<$5.5\\
SHBL~J123417.1$-$385635           & 6.10E-12& 7.0 & 18.0& 0.236  &4.34     &$0.31 \pm 0.08$ &  23 & $<$3.4\\
SHBL~J123511.0$-$140322           & 2.63E-12& 4.2 & 19.8& 0.407  &1.66     &$0.04 \pm 0.05$ &  20 & $<$3.4 \\
SHBL~J124149.3$-$145558 $^{(d)}$  & 1.81E-11& 17.3& 17.3& /	 &/        &/               &  18 & $<$4.4  \\
SHBL~J125015.5$+$315559           & 1.88E-12& 5.7 & 19.5& /	 &/        &/               &   4 & $<$18.6 \\
SHBL~J125341.1$-$393159           & 1.96E-11& 50.1& 18.3& 0.179  &2.84     &$0.16 \pm 0.09$ &  22 & $<$3.5\\
SHBL~J140630.1$-$393509           & 2.56E-12& 6.3 & 20.6& /	 &/        &/               &  20 & $<$3.9 \\
SHBL~J140630.2$+$123620           & 4.04E-12& 8.8 & 19.8& /	 &/        &/               &  26 & $<$3.1 \\ 
SHBL~J140659.2$+$164207 $^{(d)}$  & 5.43E-12& 8.4 & 18  & /	 &/        &/               &  16 & $<$4.9 \\
SHBL~J142739.5$-$252102           & 4.70E-12& 3.7 & 18.9& 0.318  &5.12     &$0.46 \pm 0.13$ &  32 & $<$2.7 \\
SHBL~J143917.4$+$393243 $^{(d)}$  & 1.79E-11& 42.9& 16.6& 0.344  &1.03     &0               &  29 & $<$2.3\\
SHBL~J144506.3$-$032612 $^{(d)}$  & 7.80E-12& 21.8& 17.4& /	 &/        &/               &  17 & $<$4.5 \\
SHBL~J150340.6$-$154113 $^{(d)}$  & 2.39E-11& 5.9 & 17.5& /	 &/        &/               &  14 & $<$5.6 \\
SHBL~J150637.0$-$054004           & 5.03E-12& 15.3& 19.5& 0.518  &1.88     &$0.05 \pm 0.06$ &  28 & $<$2.6\\
SHBL~J151041.0$+$333504           & 4.45E-12& 9.1 & 17.0& 0.112  &?        &?               &  18 & $<$3.9\\
SHBL~J151618.6$-$152343 $^{(d)}$  & 1.46E-11& 8.6 & 18.7& /	 &/        &/               &  20 & $<$4.0 \\
SHBL~J153311.3$+$185428 $^{(d)}$  & 1.43E-11& 23.0& 17.7& 0.305  &1.41     &$0.015 \pm 0.040$& 22 & $<$2.8 \\
SHBL~J161204.6$-$043815           & 4.40E-12& 4.3 & 18.9& /	 &/        &/               &  11 & $<$6.8 \\
SHBL~J161632.9$+$375602           & 1.47E-12& 4.6 & 18.7& 0.204  &4.18     &$0.27 \pm 0.10$ &  16 & $<$4.8\\
SHBL~J163658.4$-$124837           & 8.74E-12& 26.3& 20.1& 0.246  &3.54     &$0.20 \pm 0.03$ &  36 & $<$2.2\\
SHBL~J174702.3$+$493801           & 2.81E-12& 7.9 & 19.9& 0.460  &2.26     &$0.13 \pm 0.07$ &  20 & $<$3.6\\
SHBL~J175615.9$+$552217 $^{(d)}$  & 1.48E-11& 16.9& 17.6& /	 &/        &/               &  12 & $<$6.4 \\
SHBL~J184822.3$+$653657           & 4.29E-12& 9.7 & 18.3& 0.364  &2.86     &$0.11 \pm 0.09$ &  18 & $<$3.7\\
\hline
SHBL~J203844.8$-$263633           & 4.73E-12& 5.7 & 18.5& 0.437  &2.49     &$0.15 \pm 0.07$ &  21 & $<$3.3 \\
SHBL~J204735.8$-$290859           & 3.97E-12& 10.7& 19.3& 0.333  &2.28     &$0.09 \pm 0.02$ &  33 & $<$2.6\\
SHBL~J204921.7$+$003926           & 4.85E-12& 6.0 & 18.1& 0.256  &3.25     &$0.21 \pm 0.14$ &  18 & $<$4.4\\
SHBL~J205242.7$+$081038           & 4.90E-12& 6.2 & 19.6& /	 &/        &/               &  12 & $<$6.3 \\
SHBL~J213135.4$-$091523 $^{(d)}$  & 1.58E-11& 43.6& 16.6& 0.449? &0.91     & 0               &  26 & $<$2.7\\
SHBL~J213151.3$-$251558           & 6.04E-12& 11.0& 17.3& /	 &/        & /               &  18 & $<$4.2 \\
SHBL~J213852.5$-$205348 $^{(d)}$  & 1.33E-11& 11.5& 17.9& 0.290  &1.22     & 0               &  21 & $<$3.9 \\
SHBL~J222253.8$-$175321           & 2.88E-12& 5.7 & 19.4& 0.297  &2.10     & $0.06 \pm 0.05$ &  25 & $<$3.3\\
SHBL~J224910.7$-$130002 $^{(d)}$  & 9.73E-12& 7.5 & 18.9& /	 &/        & /               &  13 & $<$5.9 \\
SHBL~J225147.3$-$320614 $^{(d)}$  & 3.61E-12& 3.6 & 19.0& /	 &/        & /               &  19 & $<$4.0 \\
SHBL~J230436.8$+$370507 $^{(d)}$  & 1.85E-11& 23.1& 17.8& /	 &/        & /               &  11 & $<$7.2 \\
SHBL~J230722.0$-$120518           & 2.94E-12& 7.3 & 18.5& /	 &/        & /               &  14 & $<$5.4 \\
SHBL~J231028.0$-$371909           & 1.97E-12& 6.3 & 17.8& /	 &/        & /               &  21 & $<$3.8 \\
SHBL~J234333.8$+$344004           & 1.51E-11& 35  & 20.1& 0.366  &2.19     & $0.06 \pm 0.05$ &  31 & $<$2.2\\
SHBL~J235023.2$-$243603           & 2.14E-12& 6.7 & 16.5& 0.193  &5.02     & $0.40 \pm 0.19$ &  24 & $<$3.1\\
\hline
\end{tabular}
\smallskip
$^{(a)}$ Uncertain redshifts are marked with a "?''. 
$^{(b)}$~Impossible measure of $\alpha_{\rm oiii}^{\rm oii}$ (the $[\rm O~II] \lambda3727$ is located in noise) is marked with a "?''. 
$^{(c)}$~We consider the Ca~H\&K break to have reached its minimum value of zero when the flux blue-ward of this feature is equal to or larger than the one red-ward. The Ca~H\&K break located in noise are marked with a "?''. 
$^{(d)}$~Sources already classified in literature as BL~Lacs (see Paper~II). 
$^{(e)}$~2$\sigma$~upper limit of observed EW, see text for details. 
\end{table}