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Table 5:

Detailed results of parallax and proper motions measurements.
Background $v_{\rm LSR}$ Parallax $\mu_\alpha$ $\mu_\delta$
source ( ${\rm km~s}^{-1}$) (mas) ( ${\rm mas~yr^{-1}}$) ( ${\rm mas~yr^{-1}}$)
ON 1
Northern group
J2003+3034 -0.4 $0.521\pm0.055~$ $-3.33\pm0.18$ $-5.26\pm0.41$
   0.0 $0.401\pm0.052~$ $-3.72\pm0.17$ $-5.26\pm0.21$
   0.4 $0.361\pm0.052~$ $-3.82\pm0.17$ $-5.28\pm0.19$
   0.7 $0.526\pm0.057~$ $-3.36\pm0.19$ $-5.19\pm0.34$
  Combined fit $0.299\pm0.112^1$    
  Averaging data $0.391\pm0.061~$    
J2009+3049 -0.4 $0.380\pm0.121~$ $-2.87\pm0.39$ $-4.88\pm0.31$
   0.0 $0.459\pm0.140~$ $-2.68\pm0.46$ $-4.80\pm0.22$
   0.4 $0.483\pm0.142~$ $-2.59\pm0.48$ $-4.79\pm0.20$
   0.7 $0.415\pm0.112~$ $-2.81\pm0.37$ $-4.78\pm0.23$
  Combined fit $0.482\pm0.137$1    
  Averaging data $0.368\pm0.070~$    
Southern group
J2003+3034 14.4   $-3.88\pm0.12$ $-5.92\pm0.14$
  14.8   $-3.75\pm0.09$ $-6.03\pm0.11$
  15.1   $-3.67\pm0.21$ $-6.09\pm0.19$

J2009+3034 		14.4   $-3.00\pm0.15$ $-5.49\pm0.20$
  14.8   $-2.88\pm0.21$ $-5.59\pm0.26$
  15.1   $-2.77\pm0.29$ $-5.65\pm0.35$
Both QSOs Combined fit $0.390\pm0.116$1    
  Averaging data $\mathbf{0.389\pm0.045~}$    
$\langle \mu \rangle _{\rm north}(\sigma)_{pm}$     $-3.15\pm0.89(0.44)$2 $-5.03\pm0.46(0.22)~$2
$\langle \mu \rangle _{\rm south}(\sigma)_{pm}$     $-3.33\pm0.90(0.45)~$2 $-5.80\pm0.46(0.23)~$2
L 1206
J2223+6249 -13.3 $1.163\pm0.222~$ $0.24\pm0.85$ $-2.84\pm0.40$
  -12.9 $1.116\pm0.263~$ $0.08\pm0.92$ $-2.59\pm0.48$
  -10.9 $1.083\pm0.170~$ $0.23\pm0.90$ $-2.85\pm0.23$
  -10.5 $1.485\pm0.190~$ $0.56\pm0.31$ $-1.61\pm1.42$
  Combined fit $1.318\pm0.282$1    
  Averaging data $1.331\pm0.180~$    
J2225+6411 -13.3 $1.311\pm0.408~$ $0.22\pm0.51$ $-0.28\pm0.63$
  -12.9 $1.322\pm0.386~$ $0.41\pm0.50$ $-0.65\pm0.56$
  -10.9 $1.300\pm0.416~$ $0.35\pm0.52$ $-0.50\pm0.65$
  -10.5 $1.174\pm0.237~$ $0.05\pm0.64$ $~~~0.11\pm0.27$
  Combined fit $1.272\pm0.384$1    
  Averaging data $1.288\pm0.241~$    

Both QSOs 		Combined fit $1.331\pm0.250$1    
  Averaging data $\mathbf{1.289\pm0.153}~$    
$\langle \mu \rangle (\sigma)_{pm}$     $0.27\pm0.23(0.16)$2 $-1.40\pm1.95(1.15)~$2
L 1287
J0035+6130 -27.0 $1.111\pm0.074~$ $-0.18\pm0.10$ $-2.30\pm0.25$
  -23.9 $0.928\pm0.078~$ $-1.02\pm0.12$ $-2.28\pm0.08$
  -23.5 $0.957\pm0.093~$ $-0.93\pm0.11$ $-2.48\pm0.12$
  -23.2 $1.002\pm0.084~$ $-0.88\pm0.11$ $-2.39\pm0.09$
  -22.8 $0.940\pm0.083~$ $-1.14\pm0.11$ $-2.78\pm0.10$
  -22.5 $0.917\pm0.067~$ $-1.17\pm0.12$ $-3.28\pm0.07$
  Combined fit $0.984\pm0.086$1    
  Averaging data $1.016\pm0.052~$    
J0037+6236 -27.0 $1.306\pm0.071~$ $-0.14\pm0.10$ $-1.71\pm0.40$
  -23.9 $1.244\pm0.044~$ $-0.88\pm0.04$ $-1.72\pm0.27$
  -23.5 $1.225\pm0.040~$ $-0.81\pm0.04$ $-1.77\pm0.25$
  -23.2 $1.011\pm0.101~$ $-0.88\pm0.14$ $-1.83\pm0.12$
  -22.8 $0.945\pm0.125~$ $-1.17\pm0.20$ $-2.20\pm0.14$
  -22.5 $1.330\pm0.043~$ $-1.01\pm0.04$ $-2.64\pm0.37$
  Combined fit $1.192\pm0.107$1    
  Averaging data $1.150\pm0.052~$    

Both QSOs 		Combined fit $1.079\pm0.069$1    
  Averaging data $\mathbf{1.077\pm0.039~}$    
$\langle \mu \rangle (\sigma)_{pm}$     $-0.86\pm0.11(0.33)^2$ $-2.29\pm0.56(0.46)$2
NGC 281-W
J0047+5657 -30.2 $0.416\pm0.054~$ $-2.64\pm0.15$ $-1.75\pm0.10$
  -29.9 $0.380\pm0.045~$ $-2.54\pm0.12$ $-1.72\pm0.08$
  -29.5 $0.401\pm0.041~$ $-2.58\pm0.19$ $-1.72\pm0.07$
  -29.2 $0.404\pm0.047~$ $-2.69\pm0.22$ $-1.75\pm0.08$
  -28.8 $0.497\pm0.026~$ $-2.55\pm0.04$ $-1.69\pm0.13$
  -28.1 $0.529\pm0.028~$ $-2.68\pm0.04$ $-1.52\pm0.14$
  Combined fit $0.400\pm0.070^1$    
  Averaging data $0.398\pm0.042~$    
J0052+5703 -30.2 $0.459\pm0.049~$ $-2.79\pm0.06$ $-1.87\pm0.27$
  -29.9 $0.420\pm0.048~$ $-2.68\pm0.05$ $-1.84\pm0.25$
  -29.5 $0.388\pm0.048~$ $-2.75\pm0.05$ $-1.84\pm0.22$
  -29.2 $0.408\pm0.054 $ $-2.87\pm0.07$ $-1.87\pm0.20$
  -28.8 $0.602\pm0.056~$ $-2.65\pm0.07$ $-1.82\pm0.26$
  -28.1 $0.648\pm0.055~$ $-2.76\pm0.07$ $-1.65\pm0.34$
  Combined fit $0.399\pm0.054$1    
  Averaging data $0.425\pm0.024~$    

Both QSOs 		Combined fit $0.412\pm0.045$1    
  Averaging data $\mathbf{0.421\pm0.022~}$    
$\langle \mu \rangle (\sigma)_{pm}$     $-2.69\pm0.16(0.10)^2$ $-1.77\pm0.11(0.10)~$2
S 255
J0613+1708 4.6 $\mathbf{0.628\pm0.027}~$ $-0.14\pm0.05$ $-0.84\pm1.67$
$\mu_{pm}$     $-0.14\pm0.54$2 $-0.84\pm1.76$2

Notes. (1)  The error of the combined fit multiplied by $\sqrt N$, where N is the number of maser spots; (2) we calculated an unweighted arithmetic mean of the individual proper motion results from all maser spots and background sources. The error bar on the mean is the standard error of the mean to which was added, in quadrature, the apparent movement between the two background sources of the respective coordinate. The uncertainty in the proper motion, which is introduced by the background source, is hereby taken into account. In parenthesis is given the standard deviation of the mean.


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