! Swift/XRT hardness ratio of trigger: 21514, name: GRB 220921A - source 1
 ! T0 for this burst is Swift MET=685451188.956, = 2022 Sep 21 at 11:05:59.000 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
33512.360	67.604	-82.835	1.993059e-01	4.486484e-02	-4.486484e-02
33717.442	150.860	-137.478	1.391314e-01	2.690854e-02	-2.690854e-02
39135.755	166.252	-124.595	9.312223e-02	2.222304e-02	-2.222304e-02
40314.305	346.883	-252.362	6.260883e-02	1.348878e-02	-1.348878e-02