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)  
51594.50   69180  367977  3121334  10984  2124  2120    1948       0   0  0  0
51595.50   69637  367763  3110041  11602  4650  4650    4024       0   0  0  0
51596.50   70069  367505  3098540  11400  5407  5407    5946       0   0  0  0