version 2
Source: IERS Bulletin A (2000_2000_2)

Orbits: to be used with the IGS Rapid Service Orbits (IGR)

  MJD      Xpole   Ypole  UT1-UTC    LOD  Xsig  Ysig   UTsig  LODsig  Nr Nf Nt
             (10**-6")       (0.1 usec)    (10**-6")    (0.1 usec)  
51693.50  101546  319007  2171108   9697    92    88     111       0   0  0  0
51694.50  103307  318310  2161431   9657  2139  2143    1558       0   0  0  0
51695.50  104935  317549  2152108   8988  4650  4650    4024       0   0  0  0