USNO Analysis Report for I20052 ($20FEB21XU) 
       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:     3 

    observation   7, KOKEE   :WETTZELL, NGC6251 , 19:04:57, quality codes - S:9, X:0 
    observation   9, KOKEE   :WETTZELL, 1418+546, 19:13:00, quality codes - S:0, X:9 
    observation  15, KOKEE   :WETTZELL, 1418+546, 19:33:29, quality codes - S:0, X:9 

Number of observations rejected during analysis:       2 

    observation  13, KOKEE   :WETTZELL, 1300+580, 19:25:27, which fits at  2438.8 +/- 100.9 ps 
    observation  17, KOKEE   :WETTZELL, 1324+224, 19:40:30, which fits at -3798.1 +/-  83.7 ps 

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:
         WETTZELL (0,1)

Clock breaks: None

Session Statistics 

  Observations:       18 scheduled 
                      18 correlated (included in the database) 
                      15 recoverable (usable in Solve/nuSolve) 
                      13 used
  Session fit:        61.635 ps
  UT1 formal error:   19.01 microsec 

Source Performance 

                    Number of Observations

                Scheduled  Correlated*    Used    

  0016+731              1           1        1
  0059+581              1           1        1
  0133+476              2           2        2
  0718+793              1           1        1
  1144+402              1           1        1
  1300+580              1           1        0
  1324+224              1           1        0
  1418+546              2           2        0
  NGC6251               1           1        0
  1636+473              2           2        2
  3C371                 2           2        2
  2229+695              1           1        1
  2319+317              2           2        2
  ------------  ---------  ----------   ------
  Source Total         18          18       13

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