! Swift/XRT detailed lightcurve of trigger: 375409, name: GRB 091109B
 ! Swift/XRT lightcurve of trigger: 375409, name: GRB 091109B
 ! T0 for this burst is Swift MET=279496148.2 s, = 2009 Nov 09 at 21:49:02.914 UT
 ! Data covers 0.3-10 keV
 ! For details of light-curve production, see Evans et al. 2007, A&A, 469, 379
 ! There are 3 datasets per PC mode:
 ! source count-rate, background count-rate (scaled to the source area)
 ! And fractional exposure. 
 ! Columns are given with each dataset
READ TERR 1
READ SERR 2
! PC source count-rate
!TIME		Err (pos)	Err(neg)	Rate		Error
154.788328	114.917824	-68.115844	0.170598	0.037569
603.981047	668.640373	-334.274895	0.037464	0.007732
5572.291269	1464.164371	-980.454366	0.019002	0.003707
13795.119347	9372.695953	-3429.128883	0.005072	0.001101
58701.845890	34959.869910	-22912.246987	0.002519	0.000553
203628.595022	62982.602108	-53265.703599	0.002894	0.000998
NO NO NO NO NO NO
! PC background data
!TIME		Err (pos)	Err(neg)	Rate		Error
154.788328	114.917824	-68.115844	0.001018	0.000509
603.981047	668.640373	-334.274895	0.000258	0.000082
5572.291269	1464.164371	-980.454366	0.000146	0.000038
13795.119347	9372.695953	-3429.128883	0.000145	0.000021
58701.845890	34959.869910	-22912.246987	0.000083	0.000009
203628.595022	62982.602108	-53265.703599	0.000119	0.000011
NO NO NO NO NO NO
!  PC fractional exposure data
!TIME		Err (pos)	Err(neg)	Fraction exposure	Null
154.788328	114.917824	-68.115844	1.000000	0
603.981047	668.640373	-334.274895	1.000000	0
5572.291269	1464.164371	-980.454366	0.999184	0
13795.119347	9372.695953	-3429.128883	0.490947	0
58701.845890	34959.869910	-22912.246987	0.238214	0
203628.595022	62982.602108	-53265.703599	0.068342	0