Google doc containing all sorts of info like min / max depth for dungeons and teleporters. Don't remember who made this though, but i thought i'd add it here so it doesn't get lost.

https://docs.google.com/spreadsheets/d/1I89qdUn9GRJ_T5CuTNNHDJ3jHWYUW3eNhpi2gUVs7Xc/pubhtml#