! Swift/XRT hardness ratio of trigger: 1069551, name: GRB 210820A
 ! T0 for this burst is Swift MET=651173908.288 s, = 2021 Aug 20 at 17:38:00.705 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
550.823	79.444	-78.517	0.439261	0.098939
829.067	352.808	-198.800	0.088637	0.020116
1500.295	361.061	-318.419	0.037464	0.008421
6812.033	827.293	-892.715	0.016744	0.003723
NO	NO	NO	NO	NO
! PC -- soft data
!Time		Err (pos)	Err(neg)	Rate		Error
550.823	79.444	-78.517	1.881320	0.204456
829.067	352.808	-198.800	0.310965	0.041133
1500.295	361.061	-318.419	0.065174	0.011003
6812.033	827.293	-892.715	0.028903	0.004864
NO	NO	NO	NO	NO
! PC -- hardness ratio data
!Time		Err (pos)	Err(neg)	Rate		Error
550.823	79.444	-78.517	0.233486	0.058392
829.067	352.808	-198.800	0.285037	0.074875
1500.295	361.061	-318.419	0.574832	0.161587
6812.033	827.293	-892.715	0.579329	0.161559