! Swift/XRT hardness ratio of trigger: 772052, name: GRB 170912B ! T0 for this burst is Swift MET=526890846.4 s, = 2017 Sep 12 at 06:33:46.727 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: GRB-like (counts) READ TERR 1 READ SERR 2 NO NO NO NO NO ! PC -- hard data !Time Err (pos) Err(neg) Rate Error 740.836 6139.373 -666.542 0.386123 0.016502 NO NO NO NO NO ! PC -- soft data !Time Err (pos) Err(neg) Rate Error 740.836 6139.373 -666.542 0.012475 0.003128 NO NO NO NO NO ! PC -- hardness ratio data !Time Err (pos) Err(neg) Rate Error 740.836 6139.373 -666.542 30.952680 7.872182