USNO Analysis Report for W19077 ($19MAR18XW) 
       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  14, MK-VLBA :WETTZELL, NGC6251 , 08:37:25, quality codes - S:0, X:9 
    observation  15, PIETOWN :WETTZELL, NGC6251 , 08:37:25, quality codes - S:0, X:9 
    observation  80, MK-VLBA :WETTZELL, 1342+662, 09:17:59, quality codes - S:0, X:9 

Number of observations rejected during analysis:      33

    The WETTZ13N:WETTZELL baseline was deselected, accounting for 22 observations.

    observation   1, MK-VLBA :PIETOWN , 0955+476, 08:30:20, has a G-code on S-band 
    observation   2, MK-VLBA :WETTZ13N, 0955+476, 08:30:20, has a G-code on S-band
    observation   3, MK-VLBA :WETTZELL, 0955+476, 08:30:20, has a G-code on S-band
    observation  25, MK-VLBA :PIETOWN , 1226+373, 08:44:19, has a G-code on S-band
    observation  26, MK-VLBA :WETTZELL, 1226+373, 08:44:19, has a G-code on S-band
    observation 123, MK-VLBA :WETTZELL, 1606+106, 09:34:43, has a G-code on S-band
    observation 125, PIETOWN :WETTZELL, 1606+106, 09:34:43, has a G-code on S-band
    observation 187, MK-VLBA :PIETOWN , 1520+437, 10:07:45, has a G-code on S-band
    observation 193, MK-VLBA :PIETOWN , 1300+580, 10:12:24, has a G-code on S-band
    observation 194, MK-VLBA :WETTZELL, 1300+580, 10:12:24, has a G-code on S-band
    observation 206, MK-VLBA :WETTZ13N, 3C371   , 10:18:32, which fits at -147.4 +/- 46.1 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:      231 scheduled 
                     231 correlated (included in the database) 
                     227 recoverable (usable in Solve/nuSolve) 
                     195 used
  Session fit:        34.975 ps
  UT1 formal error:    2.66 microsec 

Source Performance 

                    Number of Observations

                Scheduled  Correlated*    Used    

  0529+483             12          12       10
  0552+398              3           3        3
  0613+570             24          24       20
  0716+714             18          18       15
  0718+793              3           3        3
  0738+491              9           9        9
  0749+540             15          15       13
  0800+618              3           3        3
  0805+410              6           6        5
  0955+476             24          24       17
  1053+815              3           3        3
  1226+373              3           3        1
  1300+580              9           9        7
  1342+662              3           3        2
  1418+546             12          12       10
  1520+437              9           9        8
  1606+106             12          12        8
  NGC6251               3           3        1
  1636+473              9           9        9
  NRAO512              12          12       12
  1639+230             12          12       12
  1651+391              3           3        3
  DA426                 6           6        6
  1725+123              3           3        3
  3C371                12          12        9
  1823+689              3           3        3
  ------------  ---------  ----------   ------
  Source Total        231         231      195

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