version 2
Source: IERS Bulletin A (2000_Jan_10)

Orbits: to be used with the IGS Prediction Service Orbits (IGP)

  MJD      Xpole   Ypole  UT1-UTC    LOD  Xsig  Ysig   UTsig  LODsig  Nr Nf Nt
             (10**-6")       (0.1 usec)    (10**-6")    (0.1 usec)  
51553.50   43774  375286  3501735   7059  2121  2137    1554       0   0  0  0
51554.50   43815  375012  3493866   8678  4650  4650    4024       0   0  0  0
51555.50   43935  374779  3484457  10141  5407  5407    5946       0   0  0  0