! 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	4.389718	0.717629
404.824	32.470	-37.735	2.925768	0.454303
471.643	30.840	-34.350	2.477408	0.433953
534.574	28.085	-32.091	2.694249	0.471516
599.926	37.952	-37.267	2.095344	0.372108
683.812	61.880	-45.934	1.089164	0.223962
826.250	82.417	-80.558	0.827605	0.158220
988.801	110.421	-80.134	0.752548	0.139022
1237.201	225.577	-137.979	0.603771	0.090576
17552.672	1267.991	-1303.322	0.013419	0.002694
23238.968	1110.498	-1246.364	0.013915	0.002871
43739.791	4007.059	-3640.280	0.008472	0.001803
85665.497	19919.671	-33613.356	0.003352	0.000914
122704.754	11800.740	-13796.198	0.003196	0.000879
NO	NO	NO	NO	NO
! PC -- soft data
!Time		Err (pos)	Err(neg)	Rate		Error
344.173	22.916	-19.708	2.422185	0.533767
404.824	32.470	-37.735	1.379663	0.313545
471.643	30.840	-34.350	1.587171	0.346832
534.574	28.085	-32.091	1.629710	0.367639
599.926	37.952	-37.267	1.309194	0.294467
683.812	61.880	-45.934	0.932761	0.209976
826.250	82.417	-80.558	0.583851	0.134688
988.801	110.421	-80.134	0.513519	0.116773
1237.201	225.577	-137.979	0.388503	0.073140
17552.672	1267.991	-1303.322	0.025477	0.003720
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	0.003778	0.000899
NO	NO	NO	NO	NO
! PC -- hardness ratio data
!Time		Err (pos)	Err(neg)	Rate		Error
344.173	22.916	-19.708	1.812296	0.497266
404.824	32.470	-37.735	2.120639	0.583691
471.643	30.840	-34.350	1.560896	0.437147
534.574	28.085	-32.091	1.653208	0.472010
599.926	37.952	-37.267	1.600483	0.458665
683.812	61.880	-45.934	1.167678	0.356014
826.250	82.417	-80.558	1.417492	0.424695
988.801	110.421	-80.134	1.465471	0.429352
1237.201	225.577	-137.979	1.554095	0.374106
17552.672	1267.991	-1303.322	0.526701	0.130752
23238.968	1110.498	-1246.364	0.978982	0.285789
43739.791	4007.059	-3640.280	0.785810	0.224846
85665.497	19919.671	-33613.356	0.976015	0.382916
122704.754	11800.740	-13796.198	0.845827	0.307609