Wavelet sample spectrums using a Morlet wavelet for detections of 6 tagged fish.

<p>Periodicities were detected in 3 individuals on a 24 h scale (horizontal dashed line). Continuous thin lines represent the cone of influence (COI). Values outside the COI should not be interpreted due to edge effects. Thick contours represent the 95% confidence level and scale bar represents the intensity of the time-frequency space over time.