! Swift/XRT hardness ratio of trigger: 1297508, name: GRB 250321a
 ! T0 for this burst is Swift MET=764210594.176 s, = 2025 Mar 21 at 00:42:38.893 UT

 ! The hard band is 1.51-10 keV
 ! The soft band is 0.3-1.5 keV
 ! For details of light-curve production, see Evans et al. 2007, A&A, 469, 379
 ! There are 3 datasets: Hard, Soft, and the ratio
 ! Columns are as labelled
 ! BINMODE: 

READ TERR 1
READ SERR 2