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)  
51565.50   55753  376295  3384851  10306  2111  2129    1542       0   0  0  0
51566.50   56740  376553  3374009  11378  4650  4650    4024       0   0  0  0
51567.50   57636  376725  3362327  11986  5407  5407    5946       0   0  0  0