version 2
Source: IERS Bulletin A (2001_2001_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)  
51910.50  -73355  398876   927847   7226  2102  2126    1574       0   0  0  0
51911.50  -72902  400577   920156   8157  4650  4650    4024       0   0  0  0
51912.50  -72487  402215   911586   8982  5407  5407    5946       0   0  0  0