! Swift/XRT lightcurve of trigger: 20887, name: GRB 190404B - source 3
 ! T0 for this burst is Swift MET=576076414.0 s, = 2019 Apr 04 at 13:13:11.316 UT
 ! Data covers 0.3-10 keV
 ! The data are in 5 columns:  ! time, time error (+ve), time error (-ve), source flux, source error
 ! For a detailed description of light curve production, see Evans et al. 2007 (A&A, 469, 379 )
 ! For a detailed description of the file, see
 ! http://www.swift.ac.uk/xrt_curves/docs.php
 ! This lightcurve was obtained from http://www.swift.ac.uk/xrt_curves/00020887
 ! BINMODE: GRB-like (counts)

READ TERR 1 2
! PC data
!Time    	T_+ve   	T_-ve   	Flux    	Fluxpos 	Fluxneg
9730.314	9324.347	-2302.088	5.91092497116927e-13	9.88567252886977e-14	-9.88567252886977e-14
273277.386	17687.694	-46633.612	9.10428602561399e-14	5.94187571792218e-14	-4.22725555170658e-14