! Swift/XRT hardness ratio of trigger: 20132, name: GRB 100331B
 ! T0 for this burst is Swift MET=291762518 s, = 2010 Mar 31 at 21:08:32.335 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
63768.458	750.708	-615.771	0.019159	0.004449
70014.574	1507.023	-1073.526	0.012005	0.002560
75671.331	1071.037	-949.847	0.015655	0.003311
NO	NO	NO	NO	NO
! PC -- soft data
!Time		Err (pos)	Err(neg)	Rate		Error
63768.458	750.708	-615.771	0.021167	0.004690
70014.574	1507.023	-1073.526	0.022431	0.003501
75671.331	1071.037	-949.847	0.018306	0.003591
NO	NO	NO	NO	NO
! PC -- hardness ratio data
!Time		Err (pos)	Err(neg)	Rate		Error
63768.458	750.708	-615.771	0.905106	0.290502
70014.574	1507.023	-1073.526	0.535229	0.141444
75671.331	1071.037	-949.847	0.855184	0.246691