Table 8: To evaluate the mean energies of the three analysed bands, we used the spectral indexes of the best-fit power-law models in the [0.6-10] keV ranges ( $\alpha = 1.15\pm 0.01$ and $\alpha = 1.535\pm 0.003$). We do not report the errors on the mean energies which are of the order of 10-4 keV. The notations $\delta _{10}$ and $\xi _5$ mean ($\delta /10$) and $\xi /10^5$, respectively.
E1 E2 E3 $\tau_{12}$ $\tau_{13}$ B12 B13
(keV) (keV) (keV) (s) (s) (G) (G)
November 14 soft lag
0.42 1.44 5.19 5800 11 600 $0.24\pm0.02~\delta_{10}^{-1/3}$ $0.21\pm0.01~\delta_{10}^{-1/3}$
December 1 hard lag
0.40 1.38 4.87 $450\pm200^*$ $950\pm200^*$ $0.53\pm0.12 ~\delta_{10}^{-1} \xi_5^{2/3}$ $0.65\pm0.08 ~\delta_{10}^{-1} \xi_5^{2/3}$
* Since the uncertainties reported in Table 5 are probably underestimated,
we assumed more conservative errors of 200 s.


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