! Swift/XRT detailed lightcurve of trigger: 21437, name: GRB 210520A - source 3
 ! Swift/XRT lightcurve of trigger: 21437, name: GRB 210520A - source 3
 ! T0 for this burst is Swift MET=643230449.1 s, = 2021 May 20 at 19:07:02.000 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
48049.641	149.235	-154.148	2.950559e-02	1.556566e-02	-1.148655e-02	2.885605e-05	2.040431e-05	1.000000