! Swift/XRT detailed lightcurve of trigger: 20729, name: GRB 170121B - source 2
 ! Swift/XRT lightcurve of trigger: 20729, name: GRB 170121B - source 2
 ! 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
129405.563	6530.539	-5394.559	1.107337e-02	2.544261e-03	-2.544261e-03	9.203623e-06	3.478643e-06	0.261766
143832.330	3542.975	-1546.163	8.438282e-03	3.193527e-03	-2.550098e-03	3.763525e-05	8.870712e-06	0.357683