Figure 3
From: Performance of an ultrasonic telemetry positioning system under varied environmental conditions
Probability density functions of system performance metrics, by site. Estimated probability density functions for (a) horizontal positioning errors (defined as the distance between a transmitter’s fixed location and the location recorded by the positioning system) shown for all transmitter positions recorded (N positions: Coastal = 4,266; Estuarine = 38,498; Riverine = 7,735), and for (b) positioning efficiencies (defined as the proportion of expected transmissions that were recorded as positions during each 12 h interval of the study period) shown for each study site (N 12 h intervals: Coastal = 120; Estuarine = 80; Riverine = 98).