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)
51818.50   -6510  247492  1743208   7214    51    48     339      64   0  0  0  -1367    619     58     51
51819.50   -8148  248248  1736861   5433    55    36     313      77   0  0  0  -1913    675     47     95
51820.50  -10199  248877  1732681   3224    51    32     289      53   0  0  0  -2169    352     49     62
51821.50  -12188  249342  1729609   2146    52    39     294      59   0  0  0  -1870    476     49     46
51822.50  -13881  249909  1727077   2051    47    47     298      83   0  0  0  -1603    641     52     49
51823.50  -15381  250396  1724221   3017    54    42     230      77   0  0  0  -1475    382     38     64
51824.50  -16863  250699  1720644   4231    59    50     175      81   0  0  0  -1413    194     55     78