! Swift/XRT hardness ratio of trigger: 21639, name: GRB 231222B
 ! T0 for this burst is Swift MET=724922794.594 s, = 2023 Dec 22 at 07:26:29.594 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
43853.974	4000.910	-676.014	0.030019	0.007843
54132.219	623.604	-609.988	0.024852	0.005792
NO	NO	NO	NO	NO
! PC -- soft data
!Time		Err (pos)	Err(neg)	Rate		Error
43853.974	4000.910	-676.014	0.031803	0.008065
54132.219	623.604	-609.988	0.028344	0.006213
NO	NO	NO	NO	NO
! PC -- hardness ratio data
!Time		Err (pos)	Err(neg)	Rate		Error
43853.974	4000.910	-676.014	0.943919	0.343698
54132.219	623.604	-609.988	0.876802	0.280512