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.
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. 19. The computer-implemented method of claim 17 , wherein the first attribute graph comprises readings from a first sensor, wherein the second attribute graph comprises readings from a second sensor, and further comprising, in response to the indication that the second attribute graph is dragged over the first attribute graph, updating the user interface data such that the first attribute graph comprises the readings from the first sensor and the readings from the second sensor.