\begin{table}%ta1
\par
\caption{\label{tab:calibrators}Properties of the secondary calibrators defined with LABOCA.}
%\centerline
 {
\begin{tabular}{lrrrrrrrrr}
\hline\hline\noalign{\smallskip}
Source & $\alpha({\rm J}2000)$ & $\delta({\rm J2000})$ & \multicolumn{1}{c}{$S^{a}_{\rm G}$} & \multicolumn{1}{c}{Nr.} 
& \multicolumn{1}{c}{$S^{b}_{\rm peak}$}&$\smallint S{\rm d}\Omega^{c}_{\rm G}$&$\theta_{\rm maj}$& $\theta_{\rm min}$ & PA \\
&&&\multicolumn{1}{r}{(Jy~beam$^{-1}$)}& &\multicolumn{1}{r}{(Jy~beam$^{-1}$)}& \multicolumn{1}{c}{(Jy)} &($''$) & ($''$) & ($^{\circ}$ E of N)\\
\hline 
CRL 618           & $04^{\rm h}42^{\rm m}54\rlap{.}{^{\rm s}}00$ & $+36^{\circ}06'53\rlap{.}''7$ &  $4.9  \pm 0.2 $ &   6 &  $4.7(2)   $& 5.5(4)  &  19.7(8) & 19.0(8) & --     \\
V883 ORI          & $05^{\rm h}38^{\rm m}18\rlap{.}{^{\rm s}}10$ & $-07^{\circ}02'27\rlap{.}''0$ &  $1.36 \pm 0.11$ &  41 &  $1.35(3)$  & 1.93(6) &  22.3(5) & 21.3(5) &  51(20)\\
NGC 2071          & $05^{\rm h}47^{\rm m}04\rlap{.}{^{\rm s}}85$ & $+00^{\circ}21'47\rlap{.}''1$ &  $9.1  \pm 0.6 $ & 102 &  $10.0(1)$  & 26.6(3) &  30.3(3) & 28.1(3) & 157(4) \\
VY CMa            & $07^{\rm h}22^{\rm m}58\rlap{.}{^{\rm s}}33$ & $-25^{\circ}46'03\rlap{.}''2$ &  $1.54 \pm 0.17$ &  34 &  $1.52(2)$  & 1.90(5) &  21.1(3) & 21.0(3) & --     \\
IRAS 13134$-$6264 & $13^{\rm h}16^{\rm m}43\rlap{.}{^{\rm s}}15$ & $-62^{\circ}58'31\rlap{.}''6$ &  $12.9 \pm 0.9 $ & 134 &  $12.9(1)$& 21.1(2)   &  23.5(2) & 23.3(2) &  --\\
IRAS 16293$-$2422 & $16^{\rm h}32^{\rm m}22\rlap{.}{^{\rm s}}90$ & $-24^{\circ}28'35\rlap{.}''6$ &  $16.4 \pm 1.2 $ & 142 &  $17.4(2)$& 28.5(3)   &  26.9(2) & 24.6(2) & 148(3) \\
G 10.62$-$0.38    & $18^{\rm h}10^{\rm m}28\rlap{.}{^{\rm s}}66$ & $-19^{\circ}55'49\rlap{.}''7$ &  $33.4 \pm 2.0 $ & 408 &  $35.4(2)$& 72.0(6)   &  29.2(2) & 24.5(1) & 100(1) \\
G 34.26$+$0.15    & $18^{\rm h}53^{\rm m}18\rlap{.}{^{\rm s}}50$ & $+01^{\circ}14'58\rlap{.}''6$ &  $55.5 \pm 3.5 $ & 164 &  $60.1(1)$  & 128.5(6)&  27.7(1) & 26.2(1) & 103(3) \\
G 45.07$+$0.13    & $19^{\rm h}13^{\rm m}22\rlap{.}{^{\rm s}}07$ & $+10^{\circ}50'53\rlap{.}''4$ &  $8.2  \pm 0.6 $ &  73 &  $8.50(5)$  & 15.9(2) &  26.2(2) & 24.6(2) &  67(4) \\
%G 45.12$+$0.13   & $19^{\rm h}13^{\rm m}27\rlap{.}{^{\rm s}}89$ & $+10^{\circ}53'35\rlap{.}''8$ &  $6.7  \pm 0.5 $ &  73 &  $\pm$      &  &$\pm$ &  40.7(3) & 34.9(3) &  12(2) \\
K3-50A            & $20^{\rm h}01^{\rm m}45\rlap{.}{^{\rm s}}69$ & $+33^{\circ}32'43\rlap{.}''5$ &  $15.0 \pm 1.2 $ &  23 &  $16.6(2)$  & 37.7(9) &  31.1(4) & 26.9(3) &  49(4) \\
%K3-50A-NE        & $20^{\rm h}01^{\rm m}54\rlap{.}{^{\rm s}}40$ & $+33^{\circ}34'08\rlap{.}''9$ &  $7.3  \pm 0.7 $ &  23 &  $\pm$      &  &$\pm$ &  36.3(9) & 34.9(9) & 171(24)\\
CRL 2688          & $21^{\rm h}02^{\rm m}18\rlap{.}{^{\rm s}}80$ & $+36^{\circ}41'37\rlap{.}''7$ &  $5.4  \pm 0.4 $ &  20 &  $5.3(2)$   & 6.6(1)  &  23.2(2) & 22.5(2) &  53(14)\\
\hline
\end{tabular}}
\par
\smallskip
 {$^{a}$ Mean peak flux derived from a Gaussian fit to all individual scans, errors are the standard deviation of these values.}\\
 {$^{b}$ Peak flux on the co-added map (given in Fig.~\ref{fig:calibrators}), errors correspond to the map rms.}\\
 {$^{c}$ Integrated flux of a Gaussian fit on the co-added map, errors are the formal fitting errors.}\\[2mm]
Columns are (left to right) source name, right ascension and declination (equinox J2000), Gaussian peak flux,
number of observations, map peak flux, integrated Gaussian flux, major and the minor axis and mean position angle (east of north).
The error for the Gaussian peak flux is the standard deviation of all measurements
and gives the typical LABOCA calibration accuracy including systematic effects such as uncertainties
in the focus and errors propagated from the opacity determination.
The numbers in parentheses are formal fitting uncertainties in the last quoted digit.
The overall uncertainties are estimated to be $\sim$10\%,
including the uncertainties in the observations of the primary calibrators (Mars, Uranus, Neptune).
\par
\end{table}