! Swift/XRT detailed lightcurve of trigger: 21816, name: GRB 250309B/IceCube-250309A - source 16
 ! 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
 ! 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
46264.483	191.447	-204.709	6.474767e-02	1.684136e-02	-1.684136e-02	2.766833e-04	7.673814e-05	1.000000
47167.169	635.178	-711.239	3.504424e-02	6.743035e-03	-6.743035e-03	3.694700e-04	4.810090e-05	1.000000
51832.556	285.690	-280.964	4.480112e-02	1.178064e-02	-1.178064e-02	4.767273e-04	8.427428e-05	1.000000
52339.577	275.118	-221.331	5.063529e-02	1.338408e-02	-1.338408e-02	6.971840e-04	1.088818e-04	1.000000
53939.104	3728.937	-1324.409	4.722864e-02	8.580795e-03	-8.580795e-03	7.649643e-04	7.574275e-05	0.222777
119370.952	261.110	-235.340	5.063904e-02	1.322465e-02	-1.322465e-02	3.406100e-04	7.616272e-05	1.000000
120318.410	537.209	-686.349	3.799430e-02	7.315554e-03	-7.315554e-03	4.215101e-04	5.396884e-05	1.000000
125071.997	220.169	-293.832	4.782419e-02	1.251102e-02	-1.251102e-02	3.783348e-04	7.888826e-05	1.000000
125483.913	292.166	-191.747	5.112196e-02	1.337374e-02	-1.337374e-02	4.018585e-04	8.379329e-05	1.000000
126025.935	269.147	-249.856	5.075933e-02	1.281908e-02	-1.281908e-02	3.095253e-04	7.100997e-05	1.000000
130419.323	141.187	-174.736	7.735161e-02	2.018921e-02	-2.018921e-02	5.084598e-04	1.166487e-04	1.000000
130788.562	363.667	-228.053	5.501134e-02	1.244353e-02	-1.244353e-02	3.857722e-04	7.424189e-05	1.000000
135947.424	71.461	-76.470	3.286230e-02	2.374923e-02	-1.599483e-02	1.714763e-04	9.900189e-05	1.000000