USNO Analysis Report for I21077 ($21MAR18XU) 
       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 Nicole Geiger, 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    2, KOKEE   :WETTZELL, 1418+546, 18:32:28, quality code X: 0 S: 0, fringe code X: ' ' S: ' ' 
    observation   11, KOKEE   :WETTZELL, 1823+689, 18:56:45, quality code X: 9 S: 0, fringe code X: ' ' S: ' ' 
    observation   14, KOKEE   :WETTZELL, 0134+311, 19:06:18, quality code X: 0 S: 9, fringe code X: ' ' S: ' ' 
    observation   17, KOKEE   :WETTZELL, NGC6251 , 19:16:02, quality code X: 0 S: 0, fringe code X: ' ' S: ' ' 
    observation   18, KOKEE   :WETTZELL, 1441+252, 19:20:16, quality code X: 0 S: 0, fringe code X: ' ' S: ' ' 
    observation   19, KOKEE   :WETTZELL, NRAO512 , 19:24:16, quality code X: 0 S: 9, fringe code X: ' ' S: ' ' 

Number of observations rejected during analysis:       0 

Other comments: None. 

Parameterization: 
   5 parameters: 
     UT1 offset 
     atmosphere offset for:
         KOKEE WETTZELL
     clock offset (0), first order term (1), and/or second order term (2) for:
         KOKEE (0,1)

Clock breaks: None

Session Statistics 

  Observations:       21 scheduled 
                      21 correlated (included in the database) 
                      15 recoverable (usable in Solve/nuSolve) 
                      15 used
  Session fit:        58.169 ps
  UT1 formal error:   18.46 microsec 

Source Performance 

                    Number of Observations

                Scheduled  Correlated*    Used    

  0016+731              1           1        1
  0059+581              2           2        2
  0119+115              1           1        1
  0133+476              1           1        1
  0134+311              1           1        0
  0718+793              1           1        1
  1053+815              1           1        1
  1300+580              2           2        2
  1418+546              1           1        0
  1441+252              1           1        0
  NGC6251               1           1        0
  1636+473              1           1        1
  NRAO512               1           1        0
  1803+784              1           1        1
  3C371                 2           2        2
  1823+689              1           1        0
  2229+695              2           2        2
  ------------  ---------  ----------   ------
  Source Total         21          21       15

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