This burst satisfies Sakamoto/Ukwatta Swift-BAT possible high-z criteria (Ukwatta et al. arXiv:0802.3815).
1) PL photon index = 0.92 (PL photon index < 2)
2) 1-s peak photon flux = 7.40e-01 (1-s peak photon flux < 1.0 ph/cm2/s)
3) Light curve variance = 2.284094e-05 (Variance < 0.0001)
4) T90/(Peak photon flux) = 164.9 (T90/(Peak photon flux) > 100)
Based on a limited sample of bursts, these criteria yield
an 50% chance it has a redshift greater than 3.5.