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)  
51874.50  -77907  328136  1193572   6700  2118  2108     283       0   0  0  0
51875.50  -78432  329579  1187290   5864  4650  4650     343       0   0  0  0
51876.50  -78991  330987  1181614   5488  5407  5407     530       0   0  0  0