Sorry, the directions are actually NorthEast, West, West-South-West, East-South-East, North. For the three directions choose the teleporter closest to East and West on the South side
For those of you who can't find out lvl 21 It is in compass directions The directions go like this.
North, West, West-South-West, East-South-East, North. For the three directions do the one closest to West and East on the South side.