! Swift/XRT detailed lightcurve of trigger: 21704, name: GRB 240821A - source 3
 ! T0 for this burst is Swift MET=745958179.038 s, = 2024 Aug 21 at 18:35:45.000 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
124261.837	29387.527	-32655.451	1.530957e-03	8.261290e-04	-6.265781e-04	1.476341e-04	8.439682e-06	0.080461