version 2
Source: IERS Bulletin A (   0_   0_ )

Orbits: to be used with the IGS Rapid Service Orbits (IGR)

  MJD      Xpole   Ypole  UT1-UTC    LOD  Xsig  Ysig   UTsig  LODsig  Nr Nf Nt
             (10**-6")       (0.1 usec)    (10**-6")    (0.1 usec)  
51669.50   89337  334525  2383297  11797    23    46      35       0   0  0  0
51670.50   88940  333497  2372391  10015  2112  2122    1518       0   0  0  0
51671.50   88621  332510  2363013   8741  4650  4650    4024       0   0  0  0