! Swift/XRT hardness ratio of trigger: 1047531, name: GRB 210509A
 ! T0 for this burst is Swift MET=642263567.424 s, = 2021 May 09 at 14:32:20.436 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
3466.706	369.694	-257.133	0.029468	0.007675
4328.937	603.152	-492.536	0.030189	0.005905
12954.691	9255.741	-3183.535	0.008515	0.002128
NO	NO	NO	NO	NO
! PC -- soft data
!Time		Err (pos)	Err(neg)	Rate		Error
3466.706	369.694	-257.133	0.045446	0.009573
4328.937	603.152	-492.536	0.042901	0.007024
12954.691	9255.741	-3183.535	0.011187	0.002436
NO	NO	NO	NO	NO
! PC -- hardness ratio data
!Time		Err (pos)	Err(neg)	Rate		Error
3466.706	369.694	-257.133	0.648419	0.217206
4328.937	603.152	-492.536	0.703696	0.179496
12954.691	9255.741	-3183.535	0.761190	0.252341