! Swift/XRT detailed lightcurve of trigger: 20729, name: GRB 170121B - source 1
 ! Swift/XRT lightcurve of trigger: 20729, name: GRB 170121B - source 1
 ! 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
142889.151	4486.153	-18878.148	6.745185e-04	7.521903e-04	-4.615342e-04	7.072884e-05	5.091174e-06	0.211514