! Swift/XRT detailed lightcurve of trigger: 353728, name: GRB 090531B
 ! T0 for this burst is Swift MET=265487760.96 s, = 2009 May 31 at 18:35:56.172 UT

 ! Data covers 0.3-10 keV
 ! For details of light-curve production, see Evans et al. 2007, A&A, 469, 379
 ! BINMODE: GRB-like (counts)
READ TERR 1 2
READ SERR 3
!Time    	T_+ve   	T_-ve   	Rate    	Ratepos 	Rateneg 	BGrate  	BGerr   	FracExp
! PC data
4425.830	1315.477	-622.666	1.353938e-02	3.149912e-03	-3.149912e-03	3.996147e-04	3.899840e-05	1.000000