! Swift/XRT hardness ratio of trigger: 146970, name: GRB 050721
 ! T0 for this burst is Swift MET=143612953.92 s, = 2005 Jul 21 at 04:29:14.287 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
344.173	22.916	-19.708	4.375890	0.715368
404.824	32.470	-37.735	2.924677	0.454133
471.643	30.840	-34.350	2.471045	0.432839
534.574	28.085	-32.091	2.689733	0.470725
599.926	37.952	-37.267	2.092130	0.371538
683.812	61.880	-45.934	1.086766	0.223469
826.250	82.417	-80.558	0.826144	0.157941
988.801	110.421	-80.134	0.751524	0.138833
1237.201	225.577	-137.979	0.603261	0.090499
6849.710	9792.109	-2227.967	0.034680	0.009120
17737.688	1082.974	-1095.869	0.013314	0.002902
23238.968	1110.498	-1246.364	0.013915	0.002871
43739.791	4007.059	-3640.280	0.008484	0.001806
85665.497	19919.671	-33613.356	0.003353	0.000914
122704.754	11800.740	-13796.198	0.003188	0.000877
NO	NO	NO	NO	NO
! PC -- soft data
!Time		Err (pos)	Err(neg)	Rate		Error
344.173	22.916	-19.708	2.413798	0.531919
404.824	32.470	-37.735	1.378755	0.313338
471.643	30.840	-34.350	1.583933	0.346125
534.574	28.085	-32.091	1.625719	0.366739
599.926	37.952	-37.267	1.307543	0.294096
683.812	61.880	-45.934	0.931150	0.209613
826.250	82.417	-80.558	0.583286	0.134557
988.801	110.421	-80.134	0.513400	0.116745
1237.201	225.577	-137.979	0.387994	0.073044
6849.710	9792.109	-2227.967	0.052559	0.011285
17737.688	1082.974	-1095.869	0.025762	0.004049
23238.968	1110.498	-1246.364	0.014213	0.002935
43739.791	4007.059	-3640.280	0.010781	0.002062
85665.497	19919.671	-33613.356	0.003434	0.000969
122704.754	11800.740	-13796.198	0.003793	0.000903
NO	NO	NO	NO	NO
! PC -- hardness ratio data
!Time		Err (pos)	Err(neg)	Rate		Error
344.173	22.916	-19.708	1.812865	0.497421
404.824	32.470	-37.735	2.121245	0.583857
471.643	30.840	-34.350	1.560069	0.436915
534.574	28.085	-32.091	1.654488	0.472375
599.926	37.952	-37.267	1.600047	0.458540
683.812	61.880	-45.934	1.167122	0.355844
826.250	82.417	-80.558	1.416363	0.424356
988.801	110.421	-80.134	1.463818	0.428867
1237.201	225.577	-137.979	1.554821	0.374280
6849.710	9792.109	-2227.967	0.659829	0.224008
17737.688	1082.974	-1095.869	0.516785	0.138867
23238.968	1110.498	-1246.364	0.979003	0.285795
43739.791	4007.059	-3640.280	0.786979	0.225180
85665.497	19919.671	-33613.356	0.976446	0.383087
122704.754	11800.740	-13796.198	0.840520	0.305635