BKG Analysis Report for q21108 (21APR18XK)
       This report is a contributed analysis report that does not correspond to 
       the database maintained by the IVS Data Centers for this session. 
   (Analyzed by Anastasiia Girdiuk, Federal Agency for Cartography and Geodesy (BKG),
    Spoolfile source: interactive nuSolve analysis.) 

Problems: None.

Number of observations rejected during correlation:    0

Number of observations not usable by the software:     4

    observation    2,          1746+470, WETTZELL:MK-VLBA , 07:32:17, quality codes - S:0, X:0
    observation    3,             3C371, WETTZELL:MK-VLBA , 07:33:22, quality codes - S:9, X:0
    observation   23,          1806+456, WETTZELL:MK-VLBA , 07:57:39, quality codes - S:0, X:0
    observation   38,          1751+288, WETTZELL:MK-VLBA , 08:16:44, quality codes - S:0, X:0

Number of observations rejected during analysis:       5

    observation   10, WETTZELL:MK-VLBA , 0814+425, 07:40:56, which fits at -309.3 +/- 39.8 ps
    observation   15, WETTZELL:MK-VLBA , 1504+377, 07:48:01, which fits at 643.7 +/- 43.1 ps
    observation   20, WETTZELL:MK-VLBA ,    3C371, 07:54:31, which fits at 193.9 +/- 54.3 ps
    observation   34, WETTZELL:MK-VLBA , 1504+377, 08:11:41, which fits at -4983.1 +/- 44.3 ps
    observation   39, WETTZELL:MK-VLBA ,    3C371, 08:18:00, which fits at 197.1 +/- 56.1 ps

Other comments: 
    The vgosDb BKG analysis output is available at
    ftp://ivs.bkg.bund.de/pub/vlbi/ivsdata/vgosdb_bkg/21APR18XK.tgz

Parameterization: 
    6 parameters:
     UT1 offset
     atmosphere offset for:
         MK-VLBA  WETTZELL
     clock offset (0), first order term (1), and/or second order term (2) for:
         MK-VLBA (0,1,2)

Clock breaks: None.

-----------------------------------------

Session Statistics 

  Observations:       48 scheduled (included in correlation report)
                      48 correlated (included in database) 
                      44 recoverable (usable in Solve/nuSolve) 
                      39 used 
  Session fit:        29.526 ps
  UT1 formal error:    4.030 microsec

-----------------------------------------


Source Performance 

                    Number of Observations

             Scheduled(*)  Correlated*    Used    


  0529+483              3           3        3
  0552+398              3           3        3
  0613+570              3           3        3
  0642+449              2           2        2
  0716+714              3           3        3
  0738+491              2           2        2
  0814+425              1           1        0
  1039+811              2           2        2
  1053+704              1           1        1
  1417+385              2           2        2
  1418+546              2           2        2
  1504+377              2           2        0
  1616+063              1           1        1
  1617+229              2           2        2
  1639+230              2           2        2
  1732+389              1           1        1
  1746+470              3           3        2
  1751+288              1           1        0
  1758+388              1           1        1
  1803+784              3           3        3
  1806+456              2           2        1
  1849+670              2           2        2
     3C371              3           3        0
     DA426              1           1        1
  ------------  ---------  ----------   ------
  Source Total         48          48       39

 *  Correlated means included in the database.
(*) All possible observations on scheduled network.
   Please note that the number of recoverable (usable) observations
   cannot be broken down by source for Intensive solutions.