! Swift/XRT detailed lightcurve of trigger: 20885, name: GRB 190331B - source 3
 ! Swift/XRT lightcurve of trigger: 20885, name: GRB 190331B - source 3
 ! T0 for this burst is Swift MET=575697545.0 s, = 2019 Mar 31 at 03:58:42.340 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
223721.258	309910.225	-150431.485	2.280514e-03	9.455041e-04	-7.555078e-04	1.208304e-04	7.023126e-06	0.015283