IVS Analysis Report for W19052 ($19FEB21XW) 
       This report is the official IVS analysis report that corresponds to 
       the database maintained by the IVS Data Centers for this session.  
   (Analyzed by Karen Baver, Goddard Space Flight Center VLBI Analysis Center.
    Spoolfile source: interactive solve/nuSolve analysis.) 

Problems: None. 

Number of observations rejected during correlation:    3 

    MK-VLBA :PIETOWN , 0738+491, 07:21:52 --- not in data base: probable G- or H- code in one or both bands
    MK-VLBA :PIETOWN , 0800+618, 07:50:35 --- not in data base: probable G- or H- code in one or both bands
    MK-VLBA :WETTZ13N, 0955+476, 08:25:40 --- not in data base: probable G- or H- code in one or both bands

Number of observations not usable by the software:     6 

    observation    8, MK-VLBA :WETTZELL, 3C274   , 07:17:26, quality code X-band: 9 S-band: 0 
    observation   50, MK-VLBA :WETTZ13N, 1418+546, 07:35:58, quality code X-band: 0 S-band: 9 
    observation  122, MK-VLBA :WETTZELL, 0345+460, 08:15:08, quality code X-band: 0 S-band: 9 
    observation  182, MK-VLBA :WETTZELL, 0345+460, 08:42:10, quality code X-band: 0 S-band: 8 
    observation  227, MK-VLBA :WETTZELL, NGC6251 , 09:10:33, quality code X-band: 9 S-band: 0 
    observation  228, PIETOWN :WETTZELL, NGC6251 , 09:10:33, quality code X-band: 9 S-band: 0 

Number of observations rejected during analysis:      28 

    observation   17, MK-VLBA :WETTZELL, 0738+491, 07:21:52, which fits at     2830.3 +/-      60.2 ps 
    observation  149, MK-VLBA :WETTZELL, 0749+540, 08:27:19, which fits at     2762.4 +/-      72.2 ps 

    Also, the 26 observations of the WETTZ13N:WETTZELL baseline were deselected.

Other comments: None. 

Parameterization: 
   14 parameters: 
     UT1 offset 
     atmosphere offset for:
         MK-VLBA PIETOWN WETTZ13N WETTZELL
     clock offset, first order term, and second order term for:
         PIETOWN WETTZ13N WETTZELL

Clock breaks: None

Session Statistics 

  Observations:      237 scheduled 
                     234 correlated (included in the database) 
                     228 recoverable (usable in Solve/nuSolve) 
                     200 used
  Session fit:        66.863 ps
  UT1 formal error:    5.39 microsec 

Source Performance 

                    Number of Observations

                Scheduled  Correlated*    Used    

  0016+731              6           6        5
  0059+581             12          12       10
  0345+460              9           9        7
  0415+398              9           9        9
  0529+483             18          18       15
  0613+570             12          12       10
  0716+714             18          18       15
  0718+793              3           3        3
  0738+491              6           5        4
  0749+540              3           3        2
  0800+618              6           5        5
  0955+476             24          23       19
  1015+359              3           3        3
  1053+815              3           3        3
  1101+384              3           3        3
  1128+385             12          12       10
  1144+402             18          18       15
  1156+295             24          24       20
  1212+171              3           3        3
  3C274                 3           3        2
  1300+580             12          12       12
  1308+328              3           3        3
  1324+224              9           9        9
  1418+546              6           6        4
  1520+437              3           3        3
  NGC6251               3           3        1
  1803+784              6           6        5
  ------------  ---------  ----------   ------
  Source Total        237         234      200

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