  The data from the Large Area Telescope (LAT) onboard the Fermi Gamma-ray
Space Telescope have recently been updated. We thus re-analyze the LAT data for
the supernova remnant (SNR) SN 1006. Two parts of gamma-ray emission from the
region is clearly resolved, which correspond to the north-east (NE) and
south-west (SW) limbs of the SNR. The former was detected in the previous LAT
data (Xing et al. 2016), but the latter is newly detected in this work. The
detection of the two limbs are at a 4 sigma significance level, and the
spectral results for the NE limb is consistent with those obtained in previous
detection analyses. We construct the broadband spectral energy distribution
(SED) for the SW limb. Different scenarios are considered for the SED in
gamma-ray energies. We conclude very similar to that of the NE limb, the
high-energy and very high-energy emission from the SW limb is likely dominated
by the leptonic process, in which high-energy electrons accelerated from the
shell region of the SNR inverse-Compton scatter background photons to
gamma-rays.
