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)
51657.50   83089  340785  2513122   7596    64    55     213      71   0  0  0    563   -706    156     88
51658.50   83767  340144  2505942   6740    58    44      95     121   0  0  0    882   -452    135     94
51659.50   84552  339713  2499488   6194    59    54     115      98   0  0  0    981   -324    166     47
51660.50   85399  339376  2492818   6761    66    60     119      63   0  0  0    958   -216    139     97
51661.50   86231  339022  2485546   7872    55    48     148     120   0  0  0    832   -274    222     93
51662.50   87010  338807  2476832   9596    40    41     144     107   0  0  0    690   -145    169    139
51663.50   87892  338430  2466064  11932    34    68     137      44   0  0  0   1098   -498    171     92