"UNIVERSAL" IERS FORMAT Field Contents (fields separated by blanks) N.B. : d = day celestial pole offset (precession-nutation correction) are parametrised in two different ways: - (dPsi,dEps) referred to IAU 1980 precession-nutation model - (dX,dY) to IAU 2000 1 Modified Julian Date (MJD) of the measurement EARTH ORIENTATION PARAMETERS (EOP) 2 x pole coordinate (") 3 y pole coordinate (") 4 UT1-UTC or UT1-TAI (s) 5 celestial pole offset dpsi or dX (") 6 celestial pole offset deps or dY (") UNCERTAINITY OF EARTH ORIENTATION AND NUTATION 7 uncertainty on x (") 8 uncertainty on y (") 9 uncertainty on UT (s) 10 uncertainty on dpsi or dX (") 11 uncertainty on deps or dY (") 12 rms residual of the least squares solution providing the EOP in ps CORRELATION 13 correlation coefficient : x/y 14 correlation coefficient : x/UT1 15 correlation coefficient : y/UT1 16 correlation coefficient : dX/dY or dPsi/dEps INDICATORS ____________________________________________________________________ FOR VLBI AND SLR | FOR GPS | 17 number of observation | number of receivers in the solution 18 span of the observation | number of receivers with "fixed" solution 19 not used | number of satellites (transmitters) in the solution EOP RATES 20 x rate of the pole ("/d) 21 y rate of the pole ("/d) 22 LOD (s) (N.B.: LOD/D = -dUT1/dt where D=86400 s SI) 23 dPsi rate or dX rate ("/d) 24 dEps rate or dY rate ("/d) UNCERTAINITY OF EOP RATES 25 uncertainty on x rate ("/d) 26 uncertainty on y rate ("/d) 27 uncertainty on LOD (s/d) 28 uncertainty on dPsi rate or dX rate ("/d) 29 uncertainty on dEps rate or dY rate ("/d)