! Swift/XRT detailed lightcurve of trigger: 21435, name: GRB 210520A - source 4
 ! Swift/XRT lightcurve of trigger: 21435, name: GRB 210520A - source 4
 ! 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
49343.930	4483.648	-5912.485	1.415605e-02	7.568296e-03	-5.589957e-03	1.286194e-04	2.625432e-05	0.057641