USNO Analysis Report for W19168 ($19JUN17XW) 
       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 Christopher Dieck, US Naval Observatory.
    Spoolfile source: interactive nuSolve analysis.) 

Problems: None. 

Number of observations rejected during correlation:    0 

Number of observations not usable by the software:     6 

    observation   8, MK-VLBA :WETTZELL, 2141+175, 08:35:03, quality codes - S:9, X:0 
    observation  14, MK-VLBA :WETTZELL, 1758+388, 08:39:22, quality codes - S:0, X:9 
    observation  39, PIETOWN :WETTZELL, NGC6251 , 08:57:00, quality codes - S:0, X:9 
    observation  80, MK-VLBA :WETTZELL, 1800+440, 09:29:42, quality codes - S:0, X:0 
    observation  81, PIETOWN :WETTZELL, 1800+440, 09:29:42, quality codes - S:9, X:0 
    observation 141, PIETOWN :WETTZELL, 2214+350, 10:17:06, quality codes - S:9, X:0 

Number of observations rejected during analysis:       0 

Other comments: None. 

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

Clock breaks: None

Session Statistics 

  Observations:      156 scheduled 
                     156 correlated (included in the database) 
                     150 recoverable (usable in Solve/nuSolve) 
                     150 used
  Session fit:        58.360 ps
  UT1 formal error:    5.43 microsec 

Source Performance 

                    Number of Observations

                Scheduled  Correlated*    Used    

  0059+581              3           3        3
  0718+793              6           6        6
  1053+815              3           3        3
  1144+402              3           3        3
  1300+580             12          12       12
  1342+662              6           6        6
  1418+546              9           9        9
  NGC6251               3           3        2
  1636+473             12          12       12
  1746+470              3           3        3
  1758+388              3           3        2
  1803+784              6           6        6
  1800+440              6           6        4
  3C371                12          12       12
  2113+293             12          12       12
  2141+175              9           9        8
  2144+092              6           6        6
  2209+236              9           9        9
  2214+350             12          12       11
  2215+150              6           6        6
  2229+695              9           9        9
  2319+317              3           3        3
  2356+385              3           3        3
  ------------  ---------  ----------   ------
  Source Total        156         156      150

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