! Swift/XRT detailed lightcurve of trigger: 21518, name: GRB 220921A - source 4
 ! T0 for this burst is Swift MET=685451188.956 s, = 2022 Sep 21 at 11:05:59.000 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
39707.786	324.115	-377.929	1.093341e-02	5.893249e-03	-4.352765e-03	1.672508e-04	3.565799e-05	1.000000