USNO Analysis Report for W20013 ($20JAN13XW) 
       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:    17 

    observation  19, MK-VLBA :PIETOWN , 1300+580, 08:42:39, quality codes - S:0, X:0 
    observation  20, MK-VLBA :WETTZ13N, 1300+580, 08:42:39, quality codes - S:0, X:0 
    observation  47, MK-VLBA :WETTZ13N, 1053+815, 09:02:56, quality codes - S:9, X:0 
    observation  50, MK-VLBA :WETTZ13N, 1156+295, 09:05:28, quality codes - S:9, X:0 
    observation  51, PIETOWN :WETTZ13N, 1156+295, 09:05:28, quality codes - S:9, X:0 
    observation  60, PIETOWN :WETTZ13N, 0714+457, 09:15:52, quality codes - S:0, X:9 
    observation  88, MK-VLBA :PIETOWN , 0133+476, 09:38:37, quality codes - S:0, X:0 
    observation  90, PIETOWN :WETTZ13N, 0133+476, 09:38:37, quality codes - S:0, X:0 
    observation  92, MK-VLBA :WETTZ13N, 3C274   , 09:41:11, quality codes - S:0, X:9 
    observation 125, MK-VLBA :WETTZ13N, 3C274   , 10:06:43, quality codes - S:0, X:9 
    observation 133, MK-VLBA :PIETOWN , 1324+224, 10:13:02, quality codes - S:0, X:0 
    observation 134, MK-VLBA :WETTZ13N, 1324+224, 10:13:02, quality codes - S:0, X:0 
    observation 137, MK-VLBA :WETTZ13N, 1156+295, 10:14:44, quality codes - S:9, X:0 
    observation 138, PIETOWN :WETTZ13N, 1156+295, 10:14:44, quality codes - S:9, X:0 
    observation 149, MK-VLBA :WETTZ13N, 1015+359, 10:24:37, quality codes - S:0, X:0 
    observation 150, PIETOWN :WETTZ13N, 1015+359, 10:24:37, quality codes - S:9, X:0 
    observation 155, MK-VLBA :WETTZ13N, 3C274   , 10:29:16, quality codes - S:0, X:9 

Number of observations rejected during analysis:       1 

    observation  77, MK-VLBA :WETTZ13N, 1040+244, 09:28:08, which fits at 228.9 +/- 64.9 ps 

Other comments: None. 

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

Clock breaks: None

Session Statistics 

  Observations:      156 scheduled 
                     156 correlated (included in the database) 
                     139 recoverable (usable in Solve/nuSolve) 
                     138 used
  Session fit:        48.480 ps
  UT1 formal error:    5.19 microsec 

Source Performance 

                    Number of Observations

                Scheduled  Correlated*    Used    

  0016+731              3           3        3
  0059+581              9           9        9
  0133+476              6           6        4
  0307+380              3           3        3
  0345+460              6           6        6
  0529+483              9           9        9
  0613+570              9           9        9
  0714+457              3           3        2
  0716+714              9           9        9
  0718+793              3           3        3
  0738+491              9           9        9
  0805+410              6           6        6
  0920+390              9           9        9
  0955+476              9           9        9
  1015+359              3           3        1
  1040+244              6           6        5
  1053+815              3           3        2
  1101+384              6           6        6
  1128+385              3           3        3
  1144+402              3           3        3
  1156+295              6           6        2
  3C274                 9           9        6
  1300+580             12          12       10
  1324+224              3           3        1
  1418+546              3           3        3
  NGC6251               3           3        3
  1803+784              3           3        3
  ------------  ---------  ----------   ------
  Source Total        156         156      138

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