USNO Analysis Report for I18264 ($18SEP21XU) 
       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:    10

    observation  4, 0307+380, 18:52:19, quality codes - S:0, X:0
    observation  5, 0151+474, 18:56:15, quality codes - S:0, X:0
    observation  6, 0415+398, 19:00:13, quality codes - S:9, X:0
    observation 10, 0749+540, 19:12:34, quality codes - S:9, X:0
    observation 11, 0307+380, 19:16:46, quality codes - S:0, X:0
    observation 12, 1504+377, 19:20:47, quality codes - S:9, X:0
    observation 13, 1327+504, 19:23:58, quality codes - S:9, X:0
    observation 15, 0749+540, 19:29:38, quality codes - S:9, X:0
    observation 17, 0322+222, 19:38:07, quality codes - S:0, X:9
    observation 19, 1504+377, 19:43:46, quality codes - S:9, X:0

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:
         WETTZELL (0,1)

Clock breaks: None

Session Statistics 

  Observations:       19 scheduled 
                      19 correlated (included in the database) 
                       9 recoverable (usable in Solve/nuSolve) 
                       9 used
  Session fit:        38.789 ps
  UT1 formal error:   23.51 microsec 

Source Performance 

                    Number of Observations

                Scheduled  Correlated*    Used    

  0151+474              1           1        0
  0307+380              2           2        0
  0322+222              1           1        0
  0415+398              1           1        0
  0529+483              2           2        2
  0716+714              2           2        2
  0749+540              2           2        0
  1053+704              1           1        1
  1053+815              1           1        1
  1128+385              1           1        1
  1324+224              1           1        1
  1327+504              1           1        0
  1504+377              2           2        0
  1803+784              1           1        1
  ------------  ---------  ----------   ------
  Source Total         19          19        9

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