! Swift/XRT hardness ratio of trigger: 1426088, name: GRB 251221A
 ! T0 for this burst is Swift MET=787987508.864 s, = 2025 Dec 21 at 05:25:03.864 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
194.465	59.968	-45.339	1.798928	0.197049
346.534	118.515	-92.101	0.863921	0.097864
587.480	188.477	-122.431	0.287184	0.046376
938.031	128.776	-162.073	1.178998	0.125754
1176.190	48.578	-109.383	2.259499	0.249749
1254.630	25.299	-29.862	5.207456	0.638116
1322.924	44.761	-42.995	4.258511	0.459149
1402.499	25.362	-34.813	4.833360	0.587877
1458.630	46.958	-30.769	3.477266	0.439908
1567.273	81.226	-61.685	1.247966	0.194706
24915.636	30989.963	-19879.909	0.007942	0.001958
NO	NO	NO	NO	NO
! PC -- soft data
!Time		Err (pos)	Err(neg)	Rate		Error
194.465	59.968	-45.339	0.456137	0.099679
346.534	118.515	-92.101	0.220590	0.049771
587.480	188.477	-122.431	0.145473	0.033172
938.031	128.776	-162.073	0.230084	0.052615
1176.190	48.578	-109.383	0.542084	0.122629
1254.630	25.299	-29.862	1.549250	0.348434
1322.924	44.761	-42.995	0.988656	0.221710
1402.499	25.362	-34.813	1.695714	0.349498
1458.630	46.958	-30.769	1.147778	0.254309
1567.273	81.226	-61.685	0.738272	0.150432
24915.636	30989.963	-19879.909	0.004370	0.001856
NO	NO	NO	NO	NO
! PC -- hardness ratio data
!Time		Err (pos)	Err(neg)	Rate		Error
194.465	59.968	-45.339	3.943836	0.964047
346.534	118.515	-92.101	3.916407	0.988757
587.480	188.477	-122.431	1.974144	0.551609
938.031	128.776	-162.073	5.124212	1.292998
1176.190	48.578	-109.383	4.168174	1.049453
1254.630	25.299	-29.862	3.361275	0.860893
1322.924	44.761	-42.995	4.307374	1.071791
1402.499	25.362	-34.813	2.850339	0.682140
1458.630	46.958	-30.769	3.029563	0.772963
1567.273	81.226	-61.685	1.690389	0.433811
24915.636	30989.963	-19879.909	1.817359	0.892276