Fig. 2
From: High precision 3-D coordinates for JSATS tagged fish in an acoustically noisy environment
Positions of the 9 Technologic receivers and their convex hull. Units are in meters. Note, R05 is not on the convex hull, including it would create a depression, which is concave. Receiver R04 is located adjacent to the fish passage entrance, while R07, R08 and R09 are affixed to the trashrack. The Receivers R07, R04 and R01 are essentially on the face of the dam