Table 5: Wavelet-denoised spectral lags of weak GRBs. The lags derived from raw data are shown for comparison where available. Spectral lags measured between Channels 2 and 3 combined (50-300 keV) and Channel 1 (25-50 keV), $\tau _{2+3,1}$, with the exception of the XRFs for which the lag is measured between 15-25 keV and 25-50 keV (Channel 1), $\tau _{1,15-25}$.
GRB $\tau _{2+3,1}$ (Raw data) (s) $\tau _{2+3,1}$ (Denoised data) (s)
GRB 030529 -- $0.40^{\rm +0.20}_{-0.25}$
GRB 040223 $1.70^{\rm +0.30}_{-0.25}$ $1.80^{\rm +0.35}_{-0.25}$
GRB 040403 $1.05^{\rm +0.55}_{-0.30}$ $0.95^{\rm +0.25}_{-0.15}$
GRB 040624 $3.10^{\rm +0.90}_{-0.30}$ $2.75\pm0.20$
GRB 040730 $3.35^{\rm +0.80}_{-0.55}$ $3.05^{\rm +0.40}_{-0.45}$
GRB 040827 $3.65\pm0.30$ $4.85^{\rm +0.15}_{-0.30}$
XRF 040903 -- $\tau_{1,15-25}=0.10^{\rm +0.25}_{-0.15}$
XRF 050522 $\tau_{1,15-25}=1.15^{\rm +0.25}_{-0.45}$ $\tau_{1,15-25}=0.70^{\rm +0.15}_{-0.25}$
GRB 050626 $3.25^{\rm +1.25}_{-0.65}$ $3.25^{\rm +0.35}_{-0.45}$
GRB 060130 $3.65^{\rm +1.00}_{-0.75}$ $3.45^{\rm +0.35}_{-0.45}$
GRB 070309 -- $1.70^{\rm +0.35}_{-0.30}$
GRB 070615 $0.40^{\rm +0.15}_{-0.25}$ $0.40^{\rm +0.15}_{-0.20}$


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