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)  
51596.50   69141  367297  3097161  12090  2146  2134    1761       0   0  0  0
51597.50   69241  366972  3085581  11069  4650  4650    4024       0   0  0  0
51598.50   69412  366649  3075201   9692  5407  5407    5946       0   0  0  0