! Swift/XRT hardness ratio of trigger: 20895, name: GRB 190531B - source 8
 ! T0 for this burst is Swift MET=581026212.0, = 2019 May 31 at 20:09:48.951 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
READ TERR 1 
READ SERR 2
! PC -- hard data
!Time		Err (pos)	Err(neg)	Rate		Error
18287.690	104.232	-93.845	0.556527	0.086268
18489.956	115.088	-98.034	0.404141	0.070901
18724.339	113.885	-119.295	0.435460	0.062825
18982.302	134.233	-144.079	0.413563	0.069353
19272.555	149.871	-156.021	0.558015	0.077340
19754.550	329.801	-332.123	0.484480	0.048973
23406.700	104.048	-109.073	0.333604	0.057567
23624.322	81.996	-113.574	0.387676	0.064877
23825.932	108.552	-119.614	0.424197	0.062687
24054.176	123.517	-119.693	0.352158	0.055195
24254.779	55.801	-77.086	0.318709	0.071340
24390.322	60.668	-79.741	0.313931	0.068780
24516.122	60.234	-65.132	0.234209	0.048836
24655.451	76.358	-79.095	0.339286	0.051199
24818.298	99.053	-86.489	0.308197	0.058683
25024.138	93.798	-106.787	0.324536	0.058685
25223.827	104.724	-105.891	0.255980	0.050650
25409.699	86.843	-81.148	0.371671	0.068047
25631.520	155.870	-134.978	0.341525	0.042848
29179.531	77.240	-63.170	0.282325	0.048583
29340.956	96.341	-84.185	0.287949	0.051194
29587.275	135.855	-149.978	0.198034	0.034663
121208.677	249.120	-242.313	0.044486	0.010602
121657.063	252.051	-199.266	0.054166	0.012225
122175.346	257.797	-266.232	0.034545	0.009096
122768.978	456.463	-335.834	0.049182	0.008789
NO NO NO NO NO
! PC -- soft data
!Time		Err (pos)	Err(neg)	Rate		Error
18287.690	104.232	-93.845	0.279763	0.061707
18489.956	115.088	-98.034	0.245949	0.055261
18724.339	113.885	-119.295	0.176272	0.040192
18982.302	134.233	-144.079	0.228423	0.051812
19272.555	149.871	-156.021	0.220087	0.048611
19754.550	329.801	-332.123	0.178161	0.029746
23406.700	104.048	-109.073	0.195883	0.043985
23624.322	81.996	-113.574	0.216473	0.048660
23825.932	108.552	-119.614	0.182631	0.041226
24054.176	123.517	-119.693	0.170650	0.038481
24254.779	55.801	-77.086	0.364146	0.076068
24390.322	60.668	-79.741	0.306920	0.068990
24516.122	60.234	-65.132	0.211889	0.047684
24655.451	76.358	-79.095	0.153864	0.034479
24818.298	99.053	-86.489	0.217702	0.048885
25024.138	93.798	-106.787	0.209248	0.046937
25223.827	104.724	-105.891	0.207981	0.045796
25409.699	86.843	-81.148	0.249951	0.055891
25631.520	155.870	-134.978	0.178597	0.030859
29179.531	77.240	-63.170	0.166645	0.037349
29340.956	96.341	-84.185	0.206299	0.046392
29587.275	135.855	-149.978	0.193832	0.035659
121208.677	249.120	-242.313	0.040134	0.010092
121657.063	252.051	-199.266	0.040628	0.010565
122175.346	257.797	-266.232	0.039499	0.009670
122768.978	456.463	-335.834	0.032457	0.007159
NO NO NO NO NO
! PC -- hardness ratio
!Time		Err (pos)	Err(neg)	Rate		Error
18287.690	104.232	-93.845	1.989278	0.536289
18489.956	115.088	-98.034	1.643194	0.468414
18724.339	113.885	-119.295	2.470393	0.666562
18982.302	134.233	-144.079	1.810517	0.510720
19272.555	149.871	-156.021	2.535426	0.661129
19754.550	329.801	-332.123	2.719345	0.530754
23406.700	104.048	-109.073	1.703078	0.482301
23624.322	81.996	-113.574	1.790871	0.501868
23825.932	108.552	-119.614	2.322701	0.626672
24054.176	123.517	-119.693	2.063634	0.566705
24254.779	55.801	-77.086	0.875225	0.267970
24390.322	60.668	-79.741	1.022843	0.321063
24516.122	60.234	-65.132	1.105337	0.339109
24655.451	76.358	-79.095	2.205095	0.595727
24818.298	99.053	-86.489	1.415683	0.416796
25024.138	93.798	-106.787	1.550961	0.446864
25223.827	104.724	-105.891	1.230784	0.364355
25409.699	86.843	-81.148	1.486972	0.429733
25631.520	155.870	-134.978	1.912265	0.408328
29179.531	77.240	-63.170	1.694171	0.478715
29340.956	96.341	-84.185	1.395788	0.400128
29587.275	135.855	-149.978	1.021680	0.259438
121208.677	249.120	-242.313	1.108449	0.384029
121657.063	252.051	-199.266	1.333243	0.459065
122175.346	257.797	-266.232	0.874573	0.314446
122768.978	456.463	-335.834	1.515292	0.430165