Table 12: VLBA without Saint Croix rms astrometric errors (in $\mu $as) for a relative source separation $\delta -\delta _0= 1\hbox {$^\circ $ }$. The individual astrometric error contribution from wet troposphere uncertainties is given separately along with the total astrometric errors when all model parameters are perturbed together.
    Declination of source  
    $-25\hbox {$^\circ $ }$   $0\hbox{$^\circ$ }$   $25\hbox{$^\circ$ }$   $50\hbox {$^\circ $ }$   $75\hbox{$^\circ$ }$   $85\hbox {$^\circ $ }$
Error component   $\Delta\alpha \cos\delta \hfil$ $\Delta \delta $   $\Delta\alpha \cos\delta \hfil$ $\Delta \delta $   $\Delta\alpha \cos\delta \hfil$ $\Delta \delta $   $\Delta\alpha \cos\delta \hfil$ $\Delta \delta $   $\Delta\alpha \cos\delta \hfil$ $\Delta \delta $   $\Delta\alpha \cos\delta \hfil$ $\Delta \delta $
Wet troposphere (mean)   183 563   62 189   19 55   17 41   39 27    42 44
Total (mean wtrp)   190 534   70 191   24 71   26 42   74 28   216 40


Source LaTeX | All tables | In the text