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)
51776.50   66709  244128  1976831   6705    55    40     161      61   0  0  0  -1543   -236     37     57
51777.50   64973  243971  1970088   6542    51    49     151      39   0  0  0  -1908   -130     88     84
51778.50   62949  243746  1963599   6173    45    40     208     105   0  0  0  -1828   -594     82    216
51779.50   61351  243473  1957951   5343    69    49     207      41   0  0  0  -1558   -337     90    107
51780.50   59873  243084  1953139   4545    95    51     207      87   0  0  0  -1386   -294    104    148
51781.50   58354  242919  1949008   3920    83    53     197      60   0  0  0  -1537    155     73     73
51782.50   56571  243007  1944743   4237    82    58     185      73   0  0  0  -1864     64     75     96