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)
52490.50  254467  357874 -2262376  -6750    28    38      91      46   0  0  0   1030  -2709     52     52
52491.50  255354  355095 -2255474  -7262    27    29      91      65   0  0  0    698  -2922     72     18
52492.50  256151  351982 -2248220  -7168    46    39     101      57   0  0  0    940  -3153     52     62
52493.50  257306  348963 -2241754  -5704    33    35     108     104   0  0  0   1263  -2835     94     58
52494.50  258484  346315 -2236956  -3624    30    48     100      60   0  0  0   1026  -2512     61     42
52495.50  259504  343697 -2235011   -635    36    42      97      87   0  0  0   1002  -2680     74     45
52496.50  260235  341187 -2236100   2213    31    36      89      74   0  0  0    522  -2475     56     52