! Swift/XRT hardness ratio of trigger: 21816, name: GRB 250309B/IceCube-250309A - source 16
 ! T0 for this burst is Swift MET=763198746.212 s, = 2025 Mar 09 at 07:38:31.000 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
 ! 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
46850.295	952.051	-790.522	0.016429	0.004057
52498.837	767.748	-947.245	0.030577	0.005576
119987.050	868.569	-851.439	0.016497	0.004058
125537.507	757.575	-759.341	0.017478	0.004421
130615.784	451.204	-371.198	0.029795	0.007754
NO	NO	NO	NO	NO
! PC -- soft data
!Time		Err (pos)	Err(neg)	Rate		Error
46850.295	952.051	-790.522	0.025368	0.005034
52498.837	767.748	-947.245	0.023427	0.004909
119987.050	868.569	-851.439	0.025147	0.005019
125537.507	757.575	-759.341	0.032402	0.005989
130615.784	451.204	-371.198	0.037550	0.008728
NO	NO	NO	NO	NO
! PC -- hardness ratio data
!Time		Err (pos)	Err(neg)	Rate		Error
46850.295	952.051	-790.522	0.647641	0.205181
52498.837	767.748	-947.245	1.305213	0.362539
119987.050	868.569	-851.439	0.656022	0.207796
125537.507	757.575	-759.341	0.539413	0.168988
130615.784	451.204	-371.198	0.793473	0.276874