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)  
51861.50  -66089  303106  1308007   8744  2130  2108     259       0   0  0  0
51862.50  -65918  304088  1299927   7416  4650  4650     305       0   0  0  0
51863.50  -65849  305143  1292742   6954  5407  5407     457       0   0  0  0