USNO Analysis Report for W19108 ($19APR18XW) 
       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  49, PIETOWN :WETTZ13N, 0749+540, 07:39:11, quality codes - S:9, X:0 
    observation  56, MK-VLBA :WETTZELL, NGC6251 , 07:44:31, quality codes - S:0, X:9 
    observation  58, MK-VLBA :PIETOWN , 1300+580, 07:46:33, quality codes - S:0, X:9 
    observation  59, MK-VLBA :WETTZELL, 1300+580, 07:46:33, quality codes - S:0, X:9 
    observation  80, MK-VLBA :WETTZELL, 1342+662, 08:00:04, quality codes - S:0, X:9 
    observation 180, PIETOWN :WETTZELL, 1823+689, 08:57:13, quality codes - S:9, X:0 

Number of observations rejected during analysis:      26

    The WETTZ13N:WETTZELL baseline was deselected, accounting for 19 observations. 

    observation   2, MK-VLBA :WETTZ13N, 0955+476, 07:15:20, has a G-code on S-band
    observation  16, MK-VLBA :PIETOWN , 0529+483, 07:21:55, which fits at  260.8 +/- 39.9 ps 
    observation  19, PIETOWN :WETTZ13N, 0529+483, 07:21:55, which fits at -316.2 +/- 49.2 ps 
    observation  20, PIETOWN :WETTZELL, 0529+483, 07:21:55, which fits at -260.6 +/- 26.6 ps 
    observation  29, MK-VLBA :WETTZ13N, 1418+546, 07:29:30, which fits at  251.1 +/- 90.6 ps 
    observation  30, MK-VLBA :WETTZELL, 1418+546, 07:29:30, which fits at  -97.3 +/- 35.0 ps 
    observation  52, MK-VLBA :PIETOWN , 0641+392, 07:41:20, which fits at  219.0 +/- 74.1 ps 

Other comments: None. 

Parameterization: 
   11 parameters: 
     UT1 offset 
     atmosphere offset for:
         MK-VLBA PIETOWN WETTZ13N WETTZELL
     clock offset (0), first order term (1), and/or second order term (2) for:
         PIETOWN (0,1) WETTZ13N (0,1) WETTZELL (0,1)

Clock breaks: None

Session Statistics 

  Observations:      210 scheduled 
                     210 correlated (included in the database) 
                     204 recoverable (usable in Solve/nuSolve) 
                     178 used
  Session fit:        35.138 ps
  UT1 formal error:    2.68 microsec 

Source Performance 

                    Number of Observations

                Scheduled  Correlated*    Used    

  0529+483              6           6        2
  0602+673              3           3        3
  0613+570             18          18       15
  0641+392              3           3        2
  0716+714             18          18       15
  0718+793              3           3        3
  0738+491              3           3        3
  0749+540              9           9        7
  0800+618              6           6        6
  0805+410             12          12       10
  0955+476             24          24       19
  1300+580              9           9        7
  1342+662              6           6        5
  1418+546             12          12        8
  1520+437             12          12       12
  1606+106              6           6        5
  NGC6251               3           3        2
  1636+473              9           9        9
  NRAO512               6           6        6
  1639+230             12          12       12
  1651+391              3           3        3
  DA426                 3           3        3
  1725+123              3           3        3
  1732+389              3           3        3
  1746+470              3           3        3
  3C371                12          12       10
  1823+689              3           3        2
  ------------  ---------  ----------   ------
  Source Total        210         210      178

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