USNO Analysis Report for I20049 ($20FEB18XU) 
       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:     8 

    observation   3, KOKEE   :NYALES20, 1639+230, 18:35:23, quality codes - S:9, X:0 
    observation   4, KOKEE   :NYALES20, 2141+175, 18:39:17, quality codes - S:0, X:0 
    observation   8, KOKEE   :NYALES20, 1053+815, 18:51:01, quality codes - S:9, X:0 
    observation  10, KOKEE   :NYALES20, 1441+252, 18:56:58, quality codes - S:0, X:0 
    observation  12, KOKEE   :NYALES20, 1520+437, 19:04:47, quality codes - S:9, X:0 
    observation  14, KOKEE   :NYALES20, 1441+252, 19:11:28, quality codes - S:0, X:0 
    observation  17, KOKEE   :NYALES20, 2214+350, 19:24:12, quality codes - S:9, X:0 
    observation  18, KOKEE   :NYALES20, 2141+175, 19:27:08, quality codes - S:0, X:0 

Number of observations rejected during analysis:       0 

Other comments: None. 

Parameterization: 
   5 parameters: 
     UT1 offset 
     atmosphere offset for:
         KOKEE NYALES20
     clock offset (0), first order term (1), and/or second order term (2) for:
         NYALES20 (0,1)

Clock breaks: None

Session Statistics 

  Observations:       19 scheduled 
                      19 correlated (included in the database) 
                      11 recoverable (usable in Solve/nuSolve) 
                      11 used
  Session fit:        54.438 ps
  UT1 formal error:   26.57 microsec 

Source Performance 

                    Number of Observations

                Scheduled  Correlated*    Used    

  0016+731              1           1        1
  0059+581              1           1        1
  1053+815              1           1        0
  1144+402              1           1        1
  1324+224              1           1        1
  1418+546              1           1        1
  1441+252              2           2        0
  1520+437              1           1        0
  1636+473              1           1        1
  NRAO512               1           1        1
  1639+230              1           1        0
  1800+440              1           1        1
  3C371                 1           1        1
  1929+226              1           1        1
  2141+175              2           2        0
  2214+350              1           1        0
  2356+385              1           1        1
  ------------  ---------  ----------   ------
  Source Total         19          19       11

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