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)  
51912.50  -70952  401814   913185   8020  2102  2116     123       0   0  0  0
51913.50  -69966  403272   905178   7994  4650  4650     101       0   0  0  0
51914.50  -69054  404743   897514   7334  5407  5407      92       0   0  0  0