USNO Analysis Report for Q20111 ($20APR20XK) 
       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 133, ISHIOKA :WETTZ13N, 0017+200, 07:22:21, quality codes - S:9, X:0 
    observation 160, WETTZ13N:WETTZELL, 2309+454, 07:24:54, quality codes - S:4, X:8 
    observation 230, WETTZ13N:WETTZELL, 0613+570, 07:36:39, quality codes - S:4, X:8 
    observation 238, SESHAN25:WETTZ13N, 1418+546, 07:39:32, quality codes - S:0, X:9 
    observation 356, NYALES20:WETTZ13N, 1039+811, 07:57:54, quality codes - S:4, X:4 
    observation 357, NYALES20:WETTZELL, 1039+811, 07:57:54, quality codes - S:4, X:5 

Number of observations rejected during analysis:      16 

    observation  10, WETTZ13N:WETTZELL, 0955+476, 07:00:15, which fits at      -73.5 +/-      23.3 ps 
    observation  20, WETTZ13N:WETTZELL, 1053+704, 07:01:43, which fits at     -112.5 +/-      20.3 ps 
    observation  60, WETTZ13N:WETTZELL, 2229+695, 07:07:20, which fits at     2951.9 +/-      18.3 ps 
    observation  85, NYALES20:SESHAN25, 0016+731, 07:11:33, has a G-code on X-band
    observation 110, WETTZ13N:WETTZELL, 0642+449, 07:14:47, has a G-code on S-band
    observation 140, WETTZ13N:WETTZELL, 0017+200, 07:22:21, which fits at    19181.6 +/-      20.3 ps 
    observation 145, NYALES20:SESHAN25, 0025+197, 07:23:22, has a G-code on X-band 
    observation 150, WETTZ13N:WETTZELL, 0025+197, 07:23:22, has a G-code on X-band
    observation 154, ISHIOKA :WETTZELL, 2309+454, 07:24:54, has a G-code on S-band
    observation 180, WETTZ13N:WETTZELL, 0322+222, 07:28:14, which fits at     1400.7 +/-      16.6 ps 
    observation 190, WETTZ13N:WETTZELL, 0221+067, 07:30:02, which fits at     2288.6 +/-      16.8 ps 
    observation 197, NYALES20:WETTZELL, 0229+131, 07:31:21, which fits at       91.9 +/-      22.0 ps 
    observation 210, WETTZ13N:WETTZELL, 0307+380, 07:33:07, which fits at    -3102.1 +/-      19.1 ps 
    observation 234, ISHIOKA :WETTZELL, 1418+546, 07:39:32, has a G-code on S-band
    observation 235, NYALES20:SESHAN25, 1418+546, 07:39:32, has a G-code on X-band 
    observation 330, WETTZ13N:WETTZELL, 2229+695, 07:53:32, which fits at    -1668.6 +/-      16.8 ps 

Other comments: None. 

Parameterization: 
   14 parameters: 
     UT1 offset 
     atmosphere offset for:
         ISHIOKA NYALES20 SESHAN25 WETTZ13N WETTZELL
     clock offset (0), first order term (1), and/or second order term (2) for:
         NYALES20 (0,1) SESHAN25 (0,1) WETTZ13N (0,1) WETTZELL (0,1)

Clock breaks: None

Session Statistics 

  Observations:      370 scheduled 
                     370 correlated (included in the database) 
                     364 recoverable (usable in Solve/nuSolve) 
                     348 used
  Session fit:        30.405 ps
  UT1 formal error:    3.64 microsec 

Source Performance 

                    Number of Observations

                Scheduled  Correlated*    Used    

  0016+731             20          20       19
  0017+200             10          10        8
  0025+197             10          10        8
  0059+581             20          20       20
  0119+115             20          20       20
  0133+476             20          20       20
  0202+319             10          10       10
  0221+067             10          10        9
  0229+131             10          10        9
  0307+380             10          10        9
  0322+222             10          10        9
  0529+483             10          10       10
  0552+398             10          10       10
  0613+570             10          10        9
  0642+449             10          10        9
  0716+714             20          20       20
  0718+793             10          10       10
  0955+476             20          20       19
  1039+811             10          10        8
  1053+704             20          20       19
  1418+546             10          10        7
  1803+784             20          20       20
  3C371                20          20       20
  1849+670             20          20       20
  2229+695             20          20       18
  2309+454             10          10        8
  ------------  ---------  ----------   ------
  Source Total        370         370      348

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