Relation, or lack thereof, between best-fit rest-frame extinction and rest-frame neutral hydrogen absorption of our sample. The lines are the relation for our Galaxy (Predehl & Schmitt 1995), as well as 10 ×  and 100 ×  larger N_H (from bottom to top). GRBs 080129 and 080516 are missing as they fall outside the plot with their large N_H values.