! Swift/XRT hardness ratio of trigger: 21534, name: GRB 221231A
 ! T0 for this burst is Swift MET=694215995.756 s, = 2022 Dec 31 at 21:46:05.262 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
 ! BINMODE: GRB-like (counts)

READ TERR 1
READ SERR 2
NO	NO	NO	NO	NO
! PC -- hard data
!Time		Err (pos)	Err(neg)	Rate		Error
44586.921	64372.831	-11897.659	0.004791	0.001118
NO	NO	NO	NO	NO
! PC -- soft data
!Time		Err (pos)	Err(neg)	Rate		Error
44586.921	64372.831	-11897.659	0.004172	0.001025
NO	NO	NO	NO	NO
! PC -- hardness ratio data
!Time		Err (pos)	Err(neg)	Rate		Error
44586.921	64372.831	-11897.659	1.148486	0.389059