! Swift/XRT lightcurve of trigger: 21816, name: GRB 250309B/IceCube-250309A - source 15
 ! T0 for this burst is Swift MET=763198746.212 s, = 2025 Mar 09 at 07:38:31.000 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/00021816
 ! BINMODE: GRB-like (counts)

READ TERR 1 2
! PC data
!Time    	T_+ve   	T_-ve   	Rate    	Ratepos 	Rateneg
46481.264	240.442	-421.491	6.617573e-02	1.731007e-02	-1.731007e-02
46972.670	260.529	-250.964	8.409778e-02	2.189926e-02	-2.189926e-02
47402.032	400.315	-168.833	7.747530e-02	2.027492e-02	-2.027492e-02
51758.791	196.479	-207.199	6.132579e-02	1.605585e-02	-1.605585e-02
52083.140	190.560	-127.869	7.402976e-02	1.931216e-02	-1.931216e-02
52796.725	469.860	-523.026	4.537373e-02	8.591889e-03	-8.591889e-03
120019.489	836.131	-883.877	2.950438e-02	7.993486e-03	-7.993486e-03
125468.425	826.657	-690.259	1.919515e-02	4.397582e-03	-4.397582e-03