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)
51909.50  -73806  397372   934904   6274    78    39      72      84   0  0  0    645   1806     82     60
51910.50  -73105  399020   928549   6931    63    24      48      45   0  0  0    841   1599     54     47
51911.50  -72092  400845   920785   8026    54    33      45      43   0  0  0   1106   2102     45     42
51912.50  -71241  402906   912190   8762    61    17      42      34   0  0  0    536   2026     50     64
51913.50  -70892  404639   903135   9034    64    35      51      57   0  0  0    250   1471     47    101
51914.50  -70554  406120   894378   8464    71    29      48      38   0  0  0    297   1445    114     62
51915.50  -70230  407517   886430   7366    56    41      63      47   0  0  0    219   1372     96     46