! Swift/XRT hardness ratio of trigger: 21489, name: GRB 220426A - source 4
 ! T0 for this burst is Swift MET=672648620.214, = 2022 Apr 26 at 06:49:51.000 UT
 ! The hard band is 1.51-10 keV
 ! The soft band is 0.3-1.5 keV
 ! For details of light-curve production, see Evans et al. 2007, A&A, 469, 379
! There are 3 datasets: Hard, Soft, and the ratio
! Columns are as labelled
READ TERR 1 
READ SERR 2

READ TERR 1 2
! PC data
!Time    	T_+ve   	T_-ve   	Rate    	Ratepos 	Rateneg
436990.919	567.350	-603.559	1.605065e-02	4.930450e-03	-4.122101e-03