BKG Analysis Report for q20111 (20APR20XK)
       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:     6

    observation  133,          0017+200, ISHIOKA:WETTZ13N, 07:22:21, quality codes - S:9, X:0
    observation  160,          2309+454, WETTZ13N:WETTZELL, 07:24:54, quality codes - S:4, X:8
    observation  230,          0613+570, WETTZ13N:WETTZELL, 07:36:39, quality codes - S:4, X:8
    observation  238,          1418+546, SESHAN25:WETTZ13N, 07:39:32, quality codes - S:0, X:9
    observation  356,          1039+811, NYALES20:WETTZ13N, 07:57:54, quality codes - S:4, X:4
    observation  357,          1039+811, NYALES20:WETTZELL, 07:57:54, quality codes - S:4, X:5

Number of observations rejected during analysis:      10

    observation    1,  ISHIOKA:NYALES20, 0955+476, 07:00:15, which fits at -61.9 +/- 56.6 ps
    observation   60, WETTZ13N:WETTZELL, 2229+695, 07:07:20, which fits at 2914.5 +/- 25.2 ps
    observation  110, WETTZ13N:WETTZELL, 0642+449, 07:14:47, which fits at 755.8 +/- 23.4 ps
    observation  140, WETTZ13N:WETTZELL, 0017+200, 07:22:21, which fits at 19200.7 +/- 26.8 ps
    observation  143,  ISHIOKA:WETTZ13N, 0025+197, 07:23:22, which fits at -194.6 +/- 71.5 ps
    observation  150, WETTZ13N:WETTZELL, 0025+197, 07:23:22, which fits at 17205.9 +/- 26.3 ps
    observation  180, WETTZ13N:WETTZELL, 0322+222, 07:28:14, which fits at 1394.3 +/- 24.0 ps
    observation  190, WETTZ13N:WETTZELL, 0221+067, 07:30:02, which fits at 2308.4 +/- 24.2 ps
    observation  210, WETTZ13N:WETTZELL, 0307+380, 07:33:07, which fits at 4576.3 +/- 25.9 ps
    observation  330, WETTZ13N:WETTZELL, 2229+695, 07:53:32, which fits at 6024.2 +/- 24.2 ps

Other comments: 
    The vgosDb BKG analysis output is available at
    ftp://ivs.bkg.bund.de/pub/vlbi/ivsdata/vgosdb_bkg/20APR20XK.tgz

Parameterization: 
   18 parameters:
     UT1 offset
     atmosphere offset for:
         ISHIOKA  NYALES20 SESHAN25 WETTZ13N WETTZELL
     clock offset (0), first order term (1), and/or second order term (2) for:
         ISHIOKA (0,1,2) NYALES20(0,1,2) SESHAN25(0,1,2) WETTZ13N (0,1,2)

Clock breaks: None.

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

Session Statistics 

  Observations:      370 scheduled (included in correlation report)
                     370 correlated (included in database) 
                     364 recoverable (usable in Solve/nuSolve) 
                     354 used 
  Session fit:        33.134 ps
  UT1 formal error:    4.140 microsec

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


Source Performance 

                    Number of Observations

             Scheduled(*)  Correlated*    Used    


  0016+731             20          20       20
  0017+200             10          10        8
  0025+197             10          10        8
  0059+581             20          20       20
  0119+115             20          20       20
  0133+476             20          20       20
  0202+319             10          10       10
  0221+067             10          10        9
  0229+131             10          10       10
  0307+380             10          10        9
  0322+222             10          10        9
  0529+483             10          10       10
  0552+398             10          10       10
  0613+570             10          10        9
  0642+449             10          10        9
  0716+714             20          20       20
  0718+793             10          10       10
  0955+476             20          20       19
  1039+811             10          10        8
  1053+704             20          20       20
  1418+546             10          10        9
  1803+784             20          20       20
  1849+670             20          20       20
  2229+695             20          20       18
  2309+454             10          10        9
     3C371             20          20       20
  ------------  ---------  ----------   ------
  Source Total        370         370      354

 *  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.