version 2
Source: Xpole,Ypole,Xrt,Yrt,LOD: weighted average of centres;
        UT1-UTC: integrated from the 5th day prior to Bull. A
                 last non-predicted value.

Orbits: to be used with the IGS Final Orbits

  MJD      Xpole   Ypole  UT1-UTC    LOD  Xsig  Ysig   UTsig  LODsig  Nr Nf Nt    Xrt    Yrt  Xrtsig  Yrtsig
             (10**-6")       (0.1 usec)    (10**-6")     (0.1 usec)              (10**-6"/d)    (10**-6"/d)
51769.50   74381  245550  1998769  -1510    68    41      98      88   0  0  0  -1375   -441    124     83
51770.50   73099  245063  1999814   -581    57    41     110      66   0  0  0   -905   -437     98     43
51771.50   72307  244551  1999537    886    62    36     137     127   0  0  0   -625   -408     38     57
51772.50   71735  244353  1997813   2455    60    32     124      48   0  0  0   -587      0     82     45
51773.50   70896  244376  1994330   4188    55    35     133     104   0  0  0  -1186    -44    110     77
51774.50   69786  244406  1989376   5627    64    49     131      62   0  0  0  -1146     76    115     31
51775.50   68343  244356  1983503   6274    54    43     144      30   0  0  0  -1710   -220     95     80