! Swift/XRT lightcurve of trigger: 21739, name: GRB 241209B - source 2
 ! T0 for this burst is Swift MET=755409414.685 s, = 2024 Dec 09 at 03:56:20.000 UT

 ! Data covers 0.3-10 keV
 ! The data are in 5 columns: ";
 ! time, time error (+ve), time error (-ve), source count-rate, source error
 ! For a detailed description of light curve production, see Evans et al. 2007 (A&A, 469, 379 )
 ! For a detailed description of the file, see
 ! http://www.swift.ac.uk/xrt_curves/docs.php
 ! This lightcurve was obtained from http://www.swift.ac.uk/xrt_curves/00021739
 ! BINMODE: GRB-like (counts)

READ TERR 1 2
! PC data
!Time    	T_+ve   	T_-ve   	Rate    	Ratepos 	Rateneg
54997.466	2917.489	-4211.323	3.630648e-03	1.685415e-03	-1.327441e-03