Fig. 3

Distribution of PSAT tilt values for Port Frederick fish. Static tilt values in detailed (1 Hz) data from Pacific halibut (Hippoglossus stenolepis) tagged with accelerometer Pop-up Satellite Archival Tags in Port Frederick (PF), Alaska. Stationary (red) and active (blue) modes estimated by the normal mixture model indicate that the proportion (lambda) of observations assigned to the stationary modes exceeds 90% for all three fish. To visualize the tilt distribution for smaller active modes, zoomed in plots are also shown for each fish (right). The threshold (− 0.75 g) chosen to define activity for the %tilt PSAT algorithm is shown by a thick black dashed line