version 2
Source: IERS Bulletin A (2000_2000_2)

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)  
51879.50  -80113  337835  1165263   7808  2116  2111      44       0   0  0  0
51880.50  -80591  339503  1156753   9213  4650  4650      54       0   0  0  0
51881.50  -81088  341110  1146867  10558  5407  5407     149       0   0  0  0