! Swift/XRT lightcurve of trigger: 21788, name: GRB 250309B/IceCube-250309A - source 1
 ! 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 flux, 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/00021788
 ! BINMODE: GRB-like (counts)

READ TERR 1 2
! PC data
!Time    	T_+ve   	T_-ve   	Flux    	Fluxpos 	Fluxneg
15788.120	8022.469	-3020.160	7.40237872977221e-13	4.10295924251446e-13	-3.11443385430546e-13
164927.274	5373.328	-4916.694	5.21738991023052e-13	2.92671998339244e-13	-2.16168046904246e-13