version 2
Source: Xpole,Ypole,Xrt,Yrt,LOD: weighted average of centres;
        UT1-UTC: integrated from the 5th day prior to Bull. A
                 last non-predicted value.

Orbits: to be used with the IGS Final Orbits

  MJD      Xpole   Ypole  UT1-UTC    LOD  Xsig  Ysig   UTsig  LODsig  Nr Nf Nt    Xrt    Yrt  Xrtsig  Yrtsig
             (10**-6")       (0.1 usec)    (10**-6")     (0.1 usec)              (10**-6"/d)    (10**-6"/d)
51552.50   43662  375720  3508053   5577    62    26     255     123   0  0  0   -271   -435     50    125
51553.50   43530  375244  3501955   6719    69    26     233      92   0  0  0    101   -660     74     92
51554.50   43887  374903  3494354   8234    89    24     156      94   0  0  0    480   -247     92     99
51555.50   44536  374933  3485193   9831    97    35     171     105   0  0  0    868     30     58    141
51556.50   45762  374931  3474543  11346    89    42     172     105   0  0  0   1438   -215    104    151
51557.50   47105  375043  3463182  11802    62    36     205      22   0  0  0   1044    121     74    123
51558.50   48055  375012  3451249  12057    69    67     305      38   0  0  0    768   -199     80    150