17. The computer-implemented method of claim 16 further comprising: by the one or more processors executing program instructions: receiving a selection of a second attribute graph plotting attribute values measured at different depths associated with the location of the second physical structure; and updating the user interface data such that the first depth graph displays the second attribute graph adjacent to the first attribute graph.
16. The computer-implemented method of claim 11 , wherein the first depth graph comprises a first attribute graph plotting attribute values measured at different depths associated with the location of the first physical structure.