! Swift/XRT lightcurve of trigger: 173904, name: GRB 051221B
 ! T0 for this burst is Swift MET=156888200 s, = 2005 Dec 21 at 20:03:20.091 UT

 ! Data covers 0.3-10 keV
 ! The data are in 5 columns: ";
 ! time, time error (+ve), time error (-ve), source flux, source error
 ! For a detailed description of light curve production, see Evans et al. 2007 (A&A, 469, 379 )
 ! For a detailed description of the file, see
 ! http://www.swift.ac.uk/xrt_curves/docs.php
 ! This lightcurve was obtained from http://www.swift.ac.uk/xrt_curves/00173904
 ! BINMODE: GRB-like (counts)

READ TERR 1 2
! PC data
!Time    	T_+ve   	T_-ve   	Flux    	Fluxpos 	Fluxneg
309.871	22.599	-20.026	1.136013909e-10	2.948621354e-11	-2.948621354e-11
513.757	5947.526	-181.288	6.55294762e-13	1.404190802e-13	-1.404190802e-13
NO	NO	NO	NO	NO
! PC upper limits
4627671.695	12467.380	-12467.380	2.4383102e-13	0	0