! Swift/XRT detailed lightcurve of trigger: 20729, name: GRB 170121B - source 4
 ! Swift/XRT lightcurve of trigger: 20729, name: GRB 170121B - source 4
 ! T0 for this burst is Swift MET=506702662.0 s, = 2017 Jan 21 at 14:44:03.503 UT
 ! Data covers 0.3-10 keV
 ! For details of light-curve production, see Evans et al. 2007, A&A, 469, 379
 ! BINMODE: GRB-like (counts)
READ TERR 1 2
READ SERR 3
!Time    	T_+ve   	T_-ve   	Rate    	Ratepos 	Rateneg 	BGrate  	BGerr   	FracExp
! PC data
137109.981	10265.324	-13098.977	3.327924e-03	1.288241e-03	-1.029373e-03	5.487093e-05	3.633916e-06	0.211514