Table 2: Values of the parameters for fitting several GRBs.
GRB $\tau _{\rm start}$ (s) $\tau _{\rm end}$ (s) n $\tau _{\rm pre}$ (s) $R_\Omega$ $\theta _{\rm jet}^0$ (deg) $\theta _{\rm obs}$ (deg) $\phi _{\rm obs}$ (deg) $\chi ^2$

910717 1.86 7.94 3.15 7.00 4.22 1.78 0.89 39.16 0.88

920701 1.02 6.98 3.10 7.24 20.01 2.63 0.69 188.25 1.52

990123 0.51 100.86 4.10 128.37 1.11 3.89 2.97 149.17 2.05

001225 0.28 33.37 3.60 14.68 6.08 0.74 4.28 172.58 0.84

030329 7.24 51.99 3.70 70.89 2.60 11.16 11.20 69.88 1.78

030519a 0.09 14.18 3.26 7.80 4.35 1.54 0.41 259.86 1.63

031111a 2.56 16.16 3.26 22.13 12.86 5.58 4.96 101.63 0.14

**Table 2:** Values of the parameters for fitting several GRBs.
GRB	$\tau _{\rm start}$ (s)	$\tau _{\rm end}$ (s)	n	$\tau _{\rm pre}$ (s)	$R_\Omega$	$\theta _{\rm jet}^0$ (deg)	$\theta _{\rm obs}$ (deg)	$\phi _{\rm obs}$ (deg)	$\chi ^2$
910717	1.86	7.94	3.15	7.00	4.22	1.78	0.89	39.16	0.88
920701	1.02	6.98	3.10	7.24	20.01	2.63	0.69	188.25	1.52
990123	0.51	100.86	4.10	128.37	1.11	3.89	2.97	149.17	2.05
001225	0.28	33.37	3.60	14.68	6.08	0.74	4.28	172.58	0.84
030329	7.24	51.99	3.70	70.89	2.60	11.16	11.20	69.88	1.78
030519a	0.09	14.18	3.26	7.80	4.35	1.54	0.41	259.86	1.63
031111a	2.56	16.16	3.26	22.13	12.86	5.58	4.96	101.63	0.14

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